Mg isotopic ratios in giant stars of the globular cluster NGC 6752
Open accessAbstract
Mg isotopic abundance ratios are measured in 20 bright red giants in globular cluster NGC 6752 based on very high-resolution (), high signal-to-noise spectra obtained with UVES on the VLT. There is a considerable spread in the ratio 24Mg:25Mg:26Mg with values ranging from 53:9:39 to 83:10:7. We measured the abundances of O, Na, Mg, Al, and Fe combining our sample with 21 RGB bump stars (Grundahl et al. 2002). The abundances of the samples are consistent and exhibit the usual anticorrelations between O–Na and Mg–Al. A positive correlation is found between 26Mg and Al, a mild anticorrelation is found between 24Mg and Al, while no correlation is found between 25Mg and Al. None of the elemental or isotopic abundances show a dependence on evolutionary status and, as shown by Gratton et al. (2001), the abundance variations exist even in main sequence stars. This strongly suggests that the star-to-star abundance variations are a result of varying degrees of pollution with intermediate mass AGB stars being likely polluters. Consideration of the extremes of the abundance variations provides the composition of the ambient material and the processed material. In the least contaminated stars (lowest Na and Al and highest O and Mg abundances), we infer a Mg isotopic ratio around 80:10:10 and a composition ([O/Fe], [Na/Fe], [Mg/Fe], [Al/Fe]) (0.6, -0.1, 0.5, 0.0). In the most polluted stars, we find a Mg isotopic ratio around 60:10:30 and a composition ([O/Fe], [Na/Fe], [Mg/Fe], [Al/Fe]) (-0.1, 0.6, 0.3, 1.2). Even for the least polluted stars, the abundances of 25Mg and 26Mg relative to 24Mg are considerably higher than predicted for ejecta from supernovae. Zero metallicity AGB stars may be responsible for these higher abundances. Our measured Mg isotopic ratios reveal another layer to the globular cluster star-to-star abundance variations that demands extensions of our present theoretical knowledge of stellar nucleosynthesis by giant stars.
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Claims other papers make about this one
Each is checked against this paper’s own text: does it say what the citing paper says it does?
Yong et al. (2003) found that r_Mg can reach high values for some giant stars in the globular cluster NGC 6752 with metallicity [Fe/H] ≈ −1.6.
“However, contrary to this trend, Yong et al. (2003) found that r Mg can reach high values for some giant stars in the globular cluster NGC 6752 with metallicity [Fe/ H] $ À 1:6.”
From Fundamental constants: from measurement to the universe, a window on gravitation and cosmology (2025) · cites this paper as Yong et al. 2003
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Cites
A Catalog of Parameters for Globular Clusters in the Milky Way
Harris, W. E. (1996) · The Astronomical Journal · doi:10.1086/118116 · Cited by 4,500 · cited 1× · see citing works
“Temperatures were derived from theuvby photometry using the (b− y) index and the calibration by Alonso et al. (1999), adopting E(B−V) = 0.04 (Harris 1996) for the cluster reddening.”
MethodInfluentialThe effective temperature scale of giant stars (F0–K5)
Alonso, A., Arribas, S., & Martinez-Roger, C. (1999) · Astronomy & Astrophysics Supplement Series · doi:10.1051/aas:1999521 · Cited by 1,035 · see citing works
Zinn, R. J., & West, M. J. (1984) · The Astrophysical Journal Supplement Series · doi:10.1086/190947 · Cited by 930 · see citing works
Galacti chemical evolution: Hygrogen through zinc
Timmes, F. X., Woosley, S. E., & Weaver, T. A. (1995) · The Astrophysical Journal Supplement Series · doi:10.1086/192172 · Cited by 901 · see citing works
The nitrogen abundance of the very metal-poor star HD 122563.
Sneden, C. A. (1973) · The Astrophysical Journal · doi:10.1086/152374 · Cited by 893 · see citing works
Abundances for globular cluster giants. I. Homogeneous metallicities for 24 clusters
Carretta, E., & Gratton, R. (1997) · Astronomy & Astrophysics Supplement Series · doi:10.1051/aas:1997116 · Cited by 637 · see citing works
Data Reduction and Error Analysis for the Physical Sciences, 2nd ed.
Bevington, P. R., Robinson, D. K., & Bunce, G. M. (1993) · American Journal of Physics · doi:10.1119/1.17439 · Cited by 563 · see citing works
The O-Na and Mg-Al anticorrelations in turn-off and early subgiants in globular clusters
Gratton, R., Bonifacio, P., Bragaglia, A., Carretta, E., Castellani, V., Centurion, M., Chieffi, A., Claudi, R., Clementini, G., D'Antona, F., et al. (2001) · Astronomy and Astrophysics · doi:10.1051/0004-6361:20010144 · Cited by 526 · see citing works
Self-citationPredictions for Self-Pollution in Globular Cluster Stars
Ventura, P., D’Antona, F., Mazzitelli, I., & Gratton, R. (2001) · The Astrophysical Journal · doi:10.1086/319496 · Cited by 448 · see citing works
The photospheric barium spectrum: Solar abundance and collision broadening of Baii lines by hydrogen
Holweger, H., & Müller, E. A. (1974) · Solar Physics · doi:10.1007/bf00154968 · Cited by 444 · see citing works
VandenBerg, D. A., Swenson, F. J., Rogers, F. J., Iglesias, C. A., & Alexander, D. R. (2000) · The Astrophysical Journal · doi:10.1086/308544 · Cited by 318 · see citing works
A Globular Cluster Metallicity Scale Based on the Abundance of Fe ii
Kraft, R. P., & Ivans, I. I. (2003) · Publications of the Astronomical Society of the Pacific · doi:10.1086/345914 · Cited by 315 · see citing works
Helium variation due to self–pollution among Globular Cluster stars
D'Antona, F. A., Caloi, V., Montalbán, J., Ventura, P., & Gratton, R. (2002) · Astronomy and Astrophysics · doi:10.1051/0004-6361:20021220 · Cited by 294 · see citing works
Correlated cyanogen and sodium anomalies in the globular clusters 47 TUC and NGC 6752
Cottrell, P. L., & Costa, G. S. D. (1981) · The Astrophysical Journal · doi:10.1086/183527 · Cited by 271 · see citing works
Star-To-Star Abundance Variations Among Bright Giants in the Metal-Poor Globular Cluster M15
Sneden, C. A., Kraft, R. P., Shetrone, M. D., Smith, G. H., Langer, G. E., & Prosser, C. F. (1997) · The Astronomical Journal · doi:10.1086/118618 · Cited by 253 · see citing works
Self-citationSodium-oxygen abundance anticorrelations and deep-mixing scenarios for globular-cluster giants
Langer, G. E., Hoffman, R. D., & Sneden, C. A. (1993) · Publications of the Astronomical Society of the Pacific · doi:10.1086/133147 · Cited by 231 · see citing works
Marigo, P., Girardi, L., Chiosi, C., & Wood, P. R. (2001) · Astronomy and Astrophysics · doi:10.1051/0004-6361:20010309 · Cited by 227 · see citing works
Grundahl, F., Catelan, M., Landsman, W. B., Stetson, P. B., & Andersen, M. I. (1999) · The Astrophysical Journal · doi:10.1086/307807 · Cited by 220 · see citing works
Self-citationRed Giant Branch Stars: The Theoretical Framework
Salaris, M., Cassisi, S., & Weiss, A. (2002) · Publications of the Astronomical Society of the Pacific · doi:10.1086/342498 · Cited by 203 · see citing works
Carbon and nitrogen abundance variations on the main sequence of 47 Tucanae
Cannon, R. D., Croke, B., Bell, R. A., Hesser, J. E., & Stathakis, R. A. (1998) · Monthly Notices of the Royal Astronomical Society · doi:10.1046/j.1365-8711.1998.01671.x · Cited by 202 · see citing works
Ivans, I. I., Kraft, R. P., Sneden, C., Smith, G. H., Rich, R. M., & Shetrone, M. D. (2001) · The Astronomical Journal · doi:10.1086/322108 · Cited by 201 · see citing works
Self-citationKraft, R. P., Sneden, C. A., Smith, G. H., Shetrone, M. D., Langer, G. E., & Pilachowski, C. A. (1997) · The Astronomical Journal · doi:10.1086/118251 · Cited by 194 · see citing works
Self-citationThe abundance spread in the giants of NGC 6752
Norris, J. E., Cottrell, P. L., Freeman, K. C., & Costa, G. S. D. (1981) · The Astrophysical Journal · doi:10.1086/158698 · Cited by 194 · see citing works
AL, MG and EU Abundances in Globular Cluster Giants. I. Tests of Deep Mixing
Shetrone, M. D. (1996) · The Astronomical Journal · doi:10.1086/118120 · Cited by 189 · see citing works
Self-citationThe Chemical Composition of Field RR Lyrae Stars. I. Iron and Calcium
Lambert, D. L., Heath, J. E., Lemke, M., & Drake, J. J. (1996) · The Astrophysical Journal Supplement Series · doi:10.1086/192274 · Cited by 180 · see citing works
Self-citationNucleosynthesis of light elements inside thermally pulsing AGB stars
Forestini, M., & Charbonnel, C. (1997) · Astronomy & Astrophysics Supplement Series · doi:10.1051/aas:1997348 · Cited by 176 · see citing works
THE AGE OF THE GALACTIC GLOBULAR CLUSTER SYSTEM
VandenBerg, D. A., Bolte, M., & Stetson, P. B. (1996) · Annual Review of Astronomy and Astrophysics · doi:10.1146/annurev.astro.34.1.461 · Cited by 174 · see citing works
Sodium Abundances in Field Metal-Poor Stars
Pilachowski, C. A., Sneden, C., & Kraft, R. P. (1996) · The Astronomical Journal · doi:10.1086/117909 · Cited by 157 · see citing works
Yields from low metallicity, intermediate mass AGB stars:
Ventura, P., D'Antona, F. A., & Mazzitelli, I. (2002) · Astronomy and Astrophysics · doi:10.1051/0004-6361:20021001 · Cited by 147 · see citing works
Structure, Evolution, and Nucleosynthesis of Primordial Stars
Siess, L., Livio, M., & Lattanzio, J. C. (2002) · The Astrophysical Journal · doi:10.1086/339733 · Cited by 137 · see citing works
Carbon isotopic abundances in giant stars in the CN-bimodal globular clusters NGC 6752 and M4
Suntzeff, N. B., & Smith, V. V. (1991) · The Astrophysical Journal · doi:10.1086/170638 · Cited by 119 · see citing works
Magnesium and Carbon isotopes in Globular Cluster Giants. Test of Deep Mixing.II.
Shetrone, M. D. (1996) · The Astronomical Journal · doi:10.1086/118208 · Cited by 119 · see citing works
Self-citationCarbon and Nitrogen Abundances in Stars at the Base of the Red Giant Branch in M5
Cohen, J. G., Briley, M. M., & Stetson, P. B. (2002) · The Astronomical Journal · doi:10.1086/340179 · Cited by 117 · see citing works
Abundances in Stars from the Red Giant Branch Tip to near the Main-Sequence Turnoff in M5
Ramírez, S., & Cohen, J. G. (2003) · The Astronomical Journal · doi:10.1086/345510 · Cited by 113 · see citing works
Galactic chemical abundance evolution in the solar neighborhood up to the iron peak
Alibés, A., Labay, J., & Canal, R. (2001) · Astronomy and Astrophysics · doi:10.1051/0004-6361:20010296 · Cited by 112 · see citing works
Abundances of RGB stars in NGC 6752
Grundahl, F., Briley, M. M., Nissen, P. E., & Feltzing, S. (2002) · Astronomy and Astrophysics · doi:10.1051/0004-6361:20020264 · Cited by 101 · see citing works
Self-citationEvolution and Nucleosynthesis of Zero‐Metal Intermediate‐Mass Stars
Chieffi, A., Dominguez, I., Limongi, M., & Straniero, O. (2001) · The Astrophysical Journal · doi:10.1086/321387 · Cited by 100 · see citing works
The sodium/aluminum-oxygen anticorrelation in omega Centauri and other clusters
Norris, J. E., & Costa, G. S. D. (1995) · The Astrophysical Journal · doi:10.1086/187795 · Cited by 97 · see citing works
Aluminum-Oxygen Abundance Anticorrelations and Deep-Mixing Scenarios for Globular-Cluster Giants
Langer, G. E., & Hoffman, R. D. (1995) · Publications of the Astronomical Society of the Pacific · doi:10.1086/133676 · Cited by 88 · see citing works
The Isotopic Abundances of Magnesium in Stars
Gay, P. L., & Lambert, D. L. (2000) · The Astrophysical Journal · doi:10.1086/308653 · Cited by 82 · see citing works
Self-citationHanson, R. B., Sneden, C. A., Kraft, R. P., & Fulbright, J. P. (1998) · The Astronomical Journal · doi:10.1086/300523 · Cited by 77 · see citing works
Accretion of gas by globular cluster stars
Thoul, A. A., Jorissen, A., Goriely, S., Jehin, E., Magain, P., Noels-Grötsch, A., & Parmentier, G. (2002) · Astronomy and Astrophysics · doi:10.1051/0004-6361:20011789 · Cited by 71 · see citing works
Langer, G. E., Hoffman, R. D., & Zaidins, C. S. (1997) · Publications of the Astronomical Society of the Pacific · doi:10.1086/133880 · Cited by 68 · see citing works
On the Formation of Globular Clusters. II. Early Dynamical Evolution
Brown, J. H., Burkert, A. M., & Truran, J. W. (1995) · The Astrophysical Journal · doi:10.1086/175304 · Cited by 64 · see citing works
Carbon Abundances of Faint Stars in M13: Evidence of Two Abundance-altering Mechanisms
Briley, M. M., Cohen, J. G., & Stetson, P. B. (2002) · The Astrophysical Journal · doi:10.1086/345095 · Cited by 63 · see citing works
On the formation of globular clusters. I - Dynamical limits on globular cluster metallicities
Brown, J. H., Burkert, A. M., & Truran, J. W. (1991) · The Astrophysical Journal · doi:10.1086/170260 · Cited by 58 · see citing works
The Spectra of Main-Sequence Stars in Galactic Globular Clusters. II. CH and CN Bands in M71
Cohen, J. G. (1999) · The Astronomical Journal · doi:10.1086/300860 · Cited by 58 · see citing works
CCD photometry of the globular cluster NGC 6752
Penny, A. J., & Dickens, R. J. (1986) · Monthly Notices of the Royal Astronomical Society · doi:10.1093/mnras/220.4.845 · Cited by 53 · see citing works
Isotopic magnesium abundances in stars
McWilliam, A., & Lambert, D. L. (1988) · Monthly Notices of the Royal Astronomical Society · doi:10.1093/mnras/230.4.573 · Cited by 50 · see citing works
Self-citationAbundances in the red giants of M13 and M22
Lehnert, M. D., Bell, R. A., & Cohen, J. G. (1991) · The Astrophysical Journal · doi:10.1086/169648 · Cited by 47 · see citing works
Spectral Inhomogeneities in Faint 47 Tucanae Stars
Hesser, J. E. (1978) · The Astrophysical Journal · doi:10.1086/182742 · Cited by 47 · see citing works
CN variations among main-sequence 47 Tucanae stars
Hesser, J. E., & Bell, R. A. (1980) · The Astrophysical Journal · doi:10.1086/183276 · Cited by 43 · see citing works
High-resolution CCD spectra of stars in globular clusters. IV - Carbon isotope ratios in red giants
Brown, J. A., & Wallerstein, G. (1989) · The Astronomical Journal · doi:10.1086/115248 · Cited by 43 · see citing works
High-dispersion spectroscopy of giants in metal-poor globular clusters. I - Iron abundances
Minniti, D., Geisler, D., Peterson, R. C., & Clària, J. (1993) · The Astrophysical Journal · doi:10.1086/173024 · Cited by 40 · see citing works
Isotopic abundances of magnesium in five G and K dwarfs
Tomkin, J., & Lambert, D. L. (1980) · The Astrophysical Journal · doi:10.1086/157697 · Cited by 40 · see citing works
Self-citationA Model of Deep Mixing in Globular Cluster Red Giants
Fujimoto, M. Y., Aikawa, M., & Katō, K. (1999) · The Astrophysical Journal · doi:10.1086/307376 · Cited by 40 · see citing works
Spectroscopic analysis of dwarf and subgiant stars in 47 Tucanae
Bell, R. A., Hesser, J. E., & Cannon, R. D. (1983) · The Astrophysical Journal · doi:10.1086/161064 · Cited by 34 · see citing works
Minniti, D., Peterson, R. C., Geisler, D., & Clària, J. (1996) · The Astrophysical Journal · doi:10.1086/177921 · Cited by 33 · see citing works
Carbon isotopic ratios in giant stars in the globular clusters M4 and M22
Smith, V. V., & Suntzeff, N. B. (1989) · The Astronomical Journal · doi:10.1086/115107 · Cited by 32 · see citing works
Flash‐assisted Deep Mixing in Globular Cluster Red Giants
Aikawa, M., Fujimoto, M. Y., & Katō, K. (2001) · The Astrophysical Journal · doi:10.1086/323054 · Cited by 29 · see citing works
Numerical Simulations of Globular Cluster Formation
Nakasato, N., Mori, M., & NOMOTO, K. (2000) · The Astrophysical Journal · doi:10.1086/308855 · Cited by 28 · see citing works
Messenger, B., & Lattanzio, J. C. (2002) · Monthly Notices of the Royal Astronomical Society · doi:10.1046/j.1365-8711.2002.05234.x · Cited by 9 · see citing works
Spectroscopy of Main Sequence Stars in Globular ClustersPreprint
Cannon, R., Costa, G. S. D., Norris, J. E., et al. (2002) · arXiv (Cornell University) · doi:10.48550/arxiv.astro-ph/0210324
Flagged first, then by citations
Research works printed but not linked: 2
- Kurucz, R. 1993, ATLAS9 Stellar Atmosphere Programs and 2 km/s grid. Kurucz CD-ROM No. 13. Cambridge, Mass.: Smithsonian Astrophysical Observatory, 13
- Suntzeff, N. 1993, in The Globular Cluster-Galaxy Connection, ASP Conf. Ser., 48, 167
Cited by
Sorted by citations
The Discovery and Analysis of Very Metal-Poor Stars in the Galaxy
Beers, T. C., & Christlieb, N. (2005) · Annual Review of Astronomy and Astrophysics · doi:10.1146/annurev.astro.42.053102.134057 · Cited by 1,223 · see citing works
“F or p er so na l u se o nl y. infer the ratios of 24Mg, 25Mg, and 26Mg, both for MP and VMP stars in the halo (Yong, Lambert & Ivans 2003) and in globular-cluster giants (Yong et al. 2003).”
BackgroundAbundance Variations within Globular Clusters
Gratton, R., Sneden, C., & Carretta, E. (2004) · Annual Review of Astronomy and Astrophysics · doi:10.1146/annurev.astro.42.053102.133945 · Cited by 885 · see citing works
“Similar conclusions were drawn by Vanture, Wallerstein & Suntzeff (2002), who determined the abundance of heavy elements for five stars classified as S stars by Evans (1983).”
BackgroundResultInfluentialVarying Constants, Gravitation and Cosmology
Uzan, J. (2011) · Living Reviews in Relativity · doi:10.12942/lrr-2011-2 · Cited by 820 · see citing works
Multiple Stellar Populations in Globular Clusters
Bastian, N., & Lardo, C. (2018) · Annual Review of Astronomy and Astrophysics · doi:10.1146/annurev-astro-081817-051839 · Cited by 693 · see citing works
Fast rotating massive stars and the origin of the abundance patterns in galactic globular clusters
Decressin, T., Meynet, G., Charbonnel, C., Prantzos, N., & Ekström, S. (2007) · Astronomy and Astrophysics · doi:10.1051/0004-6361:20066013 · Cited by 687 · see citing works
“However the predicted magnesium isotopic ratios are still in conflict with the data by Yong et al. (2003, 2005).”
BackgroundResultInfluentialCarretta, E., Bragaglia, A., Gratton, R., & Lucatello, S. (2009) · Astronomy and Astrophysics · doi:10.1051/0004-6361/200912097 · Cited by 613 · see citing works
“In turn, this is partly because of the higher temperature required for the reactions to occur in the two cycles (25 MK and 70 MK, respectively), and of complexity of the MgAl cycle itself (some of the original24Mg is transformed into 25Mg and26Mg, rather than in27Al: see Yong et al. 2003).”
BackgroundVarying Constants, Gravitation and Cosmology
Uzan, J. (2011) · DOAJ (DOAJ: Directory of Open Access Journals) · Cited by 392 · see citing works
The Rise of the <i>s</i> ‐Process in the Galaxy
Simmerer, J., Sneden, C., Cowan, J. J., Collier, J., Woolf, V. M., & Lawler, J. E. (2004) · The Astrophysical Journal · doi:10.1086/424504 · Cited by 380 · see citing works
“We note that Yong et al. (2003) found that metal-poor globular cluster stars showed a similar behavior in Teff , with ∆ [Fe/H] becoming more pronounced in the coolest giant stars.”
BackgroundInterstellar Turbulence II: Implications and Effects
Scalo, J., & Elmegreen, B. G. (2004) · Annual Review of Astronomy and Astrophysics · doi:10.1146/annurev.astro.42.120403.143327 · Cited by 324 · see citing works
“We do not discuss star-to-star variations in globular clusters that may be affected by stellar evolution (Yong et al. 2003).”
BackgroundPritzl, B. J., Venn, K. A., & Irwin, M. (2005) · The Astronomical Journal · doi:10.1086/432911 · Cited by 272 · see citing works
Probing the cosmological variation of the fine-structure constant: Results based on VLT-UVES sample
Chand, H., Srianand, R., Petitjean, P., & Aracil, B. (2004) · Astronomy & Astrophysics · doi:10.1051/0004-6361:20035701 · Cited by 239 · see citing works
“…systems and metallicity is measured to be larger than 0.1 Z (e.g. Ledoux et al. 2002); (ii) at Z ∼ 0.1 Z , which would be a more reasonable assumption, the composite wavelength we get will be close to the laboratory value we have used in our study (we use Yong et al. 2003 for isotopic abundances).”
BackgroundMethodInfluentialGeisler, D., Smith, V. V., Wallerstein, G., Gonzalez, G., & Charbonnel, C. (2005) · The Astronomical Journal · doi:10.1086/427540 · Cited by 198 · see citing works
“The abundance anomalies of these isotopes from higher p-burning cycles, which are not seen in field halo stars, seem to be mostly of primordial origin according to the preponderance of observational evidence (e.g., Gratton et al. 2001; Grundhal et al. 2002; Yong et al. 2003).”
BackgroundINTERSTELLAR TURBULENCE II: IMPLICATIONS AND EFFECTSPreprint
Scalo, J., & Elmegreen, B. G. (2004) · Cited by 197 · see citing works
Full computation of massive AGB evolution
Ventura, P., & D'Antona, F. A. (2005) · Astronomy and Astrophysics · doi:10.1051/0004-6361:20041917 · Cited by 191 · see citing works
“11), though other problems arise, because in this case the polluted material would have magnetisium isotope ratios25Mg/24Mg and 26Mg/24Mg around∼ 3, which disagrees with the measured magnesium isotopic ratios by Yong et al. (2003) for giant stars in NGC 6752.”
BackgroundCarretta, E., Bragaglia, A., Gratton, R., Leone, F., Recio-Blanco, A., & Lucatello, S. (2006) · Astronomy and Astrophysics · doi:10.1051/0004-6361:20054369 · Cited by 190 · see citing works
Sneden, C., Kraft, R. P., Guhathakurta, P., Peterson, R. C., & Fulbright, J. P. (2004) · The Astronomical Journal · doi:10.1086/381907 · Cited by 189 · see citing works
“But a recent study of giants in NGC 6752 (Yong et al. 2003), a cluster having [Fe/H] essentially the same as that of M3 and M13, casts doubt on such an interpretation.”
BackgroundResultInfluentialRotational mixing in low-mass stars
Palacios, A., Charbonnel, C., Talon, S., & Siess, L. (2006) · Astronomy and Astrophysics · doi:10.1051/0004-6361:20053065 · Cited by 184 · see citing works
“The initial ratio for the magnesium isotopes is 24Mg:25Mg:26Mg = 87.5:6:6.5, and is similar to the values determined by Yong et al. (2003) for the stars with the lowest 25Mg and 26Mg in NGC 6752, a globular cluster with [Fe/H] ≈ −1.6.”
InfluentialThe remarkable solar twin HIP 56948: a prime target in the quest for other Earths
Meléndez, J., Bergemann, M., Cohen, J. G., Endl, M., Karakas, A. I., Ramírez, I., Cochran, W. D., Yong, D., MacQueen, P. J., Kobayashi, C., et al. (2012) · Astronomy and Astrophysics · doi:10.1051/0004-6361/201117222 · Cited by 173 · see citing works
“They analyzed the faint (V= 14.6) solar twin M671194 using VLT/FLAMES-UVES, showing that it has a remarkable chemical similarity to the Sun.”
MethodInfluentialSelf-citationA WFC3/HSTVIEW OF THE THREE STELLAR POPULATIONS IN THE GLOBULAR CLUSTER NGC 6752
Milone, A. P., Marino, A. F., Piotto, G., Bedin, L. R., Anderson, J., Aparicio, A., Bellini, A., Cassisi, S., D'Antona, F. A., Grundahl, F., et al. (2013) · The Astrophysical Journal · doi:10.1088/0004-637x/767/2/120 · Cited by 175 · see citing works
“In the past three decades many spectroscopic studies have provided us with an accurate picture of the chemical composition of NGC6752 (e.g. Norris et al. 1981, Grundahl et al. 2002, Yong et al. 2003, 2005, 2008, Carretta et al. 2007, 2012).”
BackgroundSelf-citationCarretta, E., Gratton, R., Lucatello, S., Bragaglia, A., & Bonifacio, P. (2005) · Astronomy and Astrophysics · doi:10.1051/0004-6361:20041892 · Cited by 173 · see citing works
“For NGC 6752, we added 6 stars from Norris and Da Costa (1995), 4 stars from Carretta (1994) and the bright red giants studied by Yong et al. (2003).”
BackgroundMethodPrantzos, N., Charbonnel, C., & Iliadis, C. (2007) · Astronomy and Astrophysics · doi:10.1051/0004-6361:20077205 · Cited by 165 · see citing works
“2. b) The equilibrium values of O at high T are ∼100 times lower than the initial ones; but the observed lowest O abundances in NGC 6752 are only ∼5-8 times lower than the original value (depending on whether the Carretta et al (2005) or the Yong et al. (2003) data are used).”
BackgroundInfluentialProbing the cosmological variation of the fine-structure constant: Results based on VLT-UVES sample
Chand, H., Srianand, R., Petitjean, P., & Aracil, B. (2004) · Springer Link (Chiba Institute of Technology) · doi:10.1051/0004-6361:20035701/pdf · Cited by 161 · see citing works
Abundances in giant stars of the globular cluster NGC 6752
Yong, D., Grundahl, F., Nissen, P. E., Jensen, H., & Lambert, D. L. (2005) · Astronomy and Astrophysics · doi:10.1051/0004-6361:20052916 · Cited by 156 · see citing works
“For the RGB bump stars, the abundances of O, Na, Mg, and Al were presented in Grundahl et al. (2002) and for the RGB tip stars, the abundances of O, Na, Mg, and Al and Mg isotope ratios were presented in Yong et al. (2003).”
InfluentialSelf-citationLow-metallicity massive single stars with rotation
Szécsi, D., Langer, N., Yoon, S.-C., Sanyal, D., de Mink, S. E., Evans, C. J., & Dermine, T. (2015) · Astronomy and Astrophysics · doi:10.1051/0004-6361/201526617 · Cited by 150 · see citing works
“Galactic globular clusters are also observed to have a low metal content ([Fe/H]=−2.2...−0.2) (Gratton et al. 2001; Yong et al. 2003; Caretta et al. 2005; D’Antona & Ventura 2010; Caretta 2010).”
BackgroundInfluentialNitrogen Abundances in Giant Stars of the Globular Cluster NGC 6752
Yong, D., Grundahl, F., Johnson, J. A., & Asplund, M. (2008) · The Astrophysical Journal · doi:10.1086/590658 · Cited by 140 · see citing works
“We used model atmospheres computed byKurucz (1993), which are the same as those used by Yong et al. (2003, 2005).”
Self-citationEvolution and Yields of Extremely Metal‐poor Intermediate‐Mass Stars
Herwig, F. (2004) · The Astrophysical Journal Supplement Series · doi:10.1086/425419 · Cited by 139 · see citing works
“This result may be relevant for the interpretation of recent isotopic magnesium abundance determinations (Yong et al. 2003).”
BackgroundFenner, Y., Campbell, S., Karakas, A. I., Lattanzio, J. C., & Gibson, B. K. (2004) · Monthly Notices of the Royal Astronomical Society · doi:10.1111/j.1365-2966.2004.08108.x · Cited by 132 · see citing works
“The circles rep- resent measurements of stars at the tip of the red giant branch in NGC 6752 by Yong et al. (2003).”
InfluentialCanonical Extra Mixing in Low‐Mass Red Giants
Denissenkov, P. A., & VandenBerg, D. A. (2003) · The Astrophysical Journal · doi:10.1086/376410 · Cited by 132 · see citing works
Marino, A. F., Milone, A. P., Renzini, A., D'Antona, F. A., Anderson, J., Bedin, L. R., Bellini, A., Cordoni, G., Lagioia, E. P., Piotto, G., et al. (2019) · Monthly Notices of the Royal Astronomical Society · doi:10.1093/mnras/stz1415 · Cited by 131 · see citing works
“The chemical abundances in light elements obey to specific patterns, such as the O-Na and the C-N anticorrelations, and in some GCs a MgAl anticorrelation is also observed (e.g. Ivans et al. 1999; Yong et al. 2003; Marino et al. 2008).”
BackgroundThe Physics of Star Cluster Formation and Evolution
Krause, M., Offner, S. S. R., Charbonnel, C., Gieles, M., Klessen, R. S., Vazquez‐Semadeni, E., Ballesteros‐Paredes, J., Girichidis, P., Kruijssen, J. M. D., Ward, J. L., et al. (2020) · Space Science Reviews · doi:10.1007/s11214-020-00689-4 · Cited by 130 · see citing works
“…with a possible linkage towards Si depletion in the case of the most massive and/or most metal-poor GCs (e.g. Norris et al., 1981; Ivans et al., 1999; Yong et al., 2003; Carretta, 2015; Mészáros et al., 2015, 2019; Pancino et al., 2017; Mucciarelli et al., 2018; Masseron et al., 2019).”
BackgroundGeisler, D., Smith, V. V., Wallerstein, G., Gonzalez, G., & Charbonnel, C. (2004) · Cited by 127 · see citing works
Sneden, C., Kraft, R. P., Guhathakurta, P., Peterson, R. C., & Fulbright, J. P. (2003) · CERN Document Server (European Organization for Nuclear Research) · Cited by 125 · see citing works
Karakas, A., Lugaro, M., Carlos, M., Cseh, B., Kamath, D., & García-Hernández, D. A. (2018) · Monthly Notices of the Royal Astronomical Society · doi:10.1093/mnras/sty625 · Cited by 70 · see citing works
“Several studies have investigated magnesium isotopic abundances in order to shed light on stellar and galactic chemical evolution (Barbuy 1985, 1987; Barbuy et al. 1987; Yong et al. 2003a,b, 2004; Gay & Lambert 2000; Meléndez & Cohen 2007).”
BackgroundCarretta, E. (2006) · The Astronomical Journal · doi:10.1086/499565 · Cited by 113 · see citing works
“…standing issue we selected a number of clusters with recent abun- dance analysis for the key elements O, Na, Mg and Al: to the already mentioned studies for M 4, M 5, M 3 and M 13, we added NGC 6752 (Yong et al. 2003), NGC 6838 (M 71, Ramı́rez & Cohen 2002) and NGC 7078 (M 15, Sneden et al. 1997).”
Na-O anticorrelation and horizontal branches
Carretta, E., Bragaglia, A., Gratton, R., Lucatello, S., & Momany, Y. (2007) · Astronomy and Astrophysics · doi:10.1051/0004-6361:20065208 · Cited by 110 · see citing works
Full computation of massive AGB evolution
Ventura, P., & D'Antona, F. A. (2005) · Astronomy and Astrophysics · doi:10.1051/0004-6361:20042396 · Cited by 110 · see citing works
“The 24Mg depletion is negligible due to the low temperatures, therefore the magnesium isotopic ratios are reduced, although not at the level that would provide agreement with the relevant observations by Yong et al. (2003).”
ResultInfluentialKarakas, A. I., Lugaro, M. A., Wiescher, M., Görres, J., & Ugalde, C. (2006) · The Astrophysical Journal · doi:10.1086/502793 · Cited by 105 · see citing works
“The production of the neutron-rich isotopes in AGB stars is also of interest in relation to the non-solar Mg isotopic ratios observed in giant stars in globular clusters (Yong et al. 2003a; Yong, Aoki & Lambert 2005).”
BackgroundCarretta, E., Gratton, R., Lucatello, S., Bragaglia, A., & Bonifacio, P. (2004) · Springer Link (Chiba Institute of Technology) · doi:10.1051/0004-6361:20041892/pdf · Cited by 105 · see citing works
Denissenkov, P. A., & Herwig, F. (2003) · The Astrophysical Journal · doi:10.1086/376748 · Cited by 95 · see citing works
“These predictions seem to be in conflict with the results of Mg isotopic composition analysis of RGB stars in the GC NGC 6752 reported by Yong et al. (2003).”
ResultDenissenkov, P. A., Herwig, F., & Mg (2013) · Cited by 92 · see citing works
Reaction rates for the s -process neutron source 22 Ne + α
Longland, R. L., Iliadis, C., & Karakas, A. I. (2012) · Physical Review C · doi:10.1103/physrevc.85.065809 · Cited by 87 · see citing works
Origin of abundance inhomogeneity in globular clusters
Bekki, K., Campbell, S. W., Lattanzio, J. C., & Norris, J. E. (2007) · Monthly Notices of the Royal Astronomical Society · doi:10.1111/j.1365-2966.2007.11606.x · Cited by 87 · see citing works
“In order to compare the present models with previous ones (e.g., Fenner et al. 2004, Ventura & D’Antona 2005c), we compare the present results with the same observational ones (Yong et al. 2003 for NGC 6752) that have been already compared also with these previous studies in §3.”
BackgroundResultTracing the evolution of NGC 6397 through the chemical composition of its stellar populations
LIND, K., Charbonnel, C., Decressin, T., Primas, F., Grundahl, F., & Asplund, M. (2011) · Astronomy and Astrophysics · doi:10.1051/0004-6361/201015356 · Cited by 85 · see citing works
“In particular, the full range in O abundance is twice as large in NGC 6752 (0.8 dex, Yong et al. (2003)) than in NGC 6397 (0.4 dex, see Fig.”
BackgroundInfluentialSelf-citationCNO abundances in the globular clusters NGC 1851 and NGC 6752★
Yong, D., Grundahl, F., & Norris, J. E. (2014) · Monthly Notices of the Royal Astronomical Society · doi:10.1093/mnras/stu2334 · Cited by 84 · see citing works
“In the case of NGC 6752, stellar parameters for all program stars have been obtained from our previous studies (Grundahl et al. 2002; Yong et al. 2003).”
MethodSelf-citationJohnson, C. I., Kraft, R. P., Pilachowski, C. A., Sneden, C. A., Ivans, I. I., & Benman, G. (2005) · Publications of the Astronomical Society of the Pacific · doi:10.1086/497435 · Cited by 83 · see citing works
“In the case of NGC 6752, where the pattern of Na and Mg abundances is remarkably similar to that of M3 (Sneden et al. 2004), Yong et al. (2003a) found that many stars of high Na abundance had Mg24 abundances reduced by about 0.10–0.20 dex, which would account for the large Al abundances if the full…”
BackgroundInfluentialHeavy Element Abundances in Giant Stars of the Globular Clusters M4 and M5
Yong, D., Karakas, A. I., Lambert, D. L., Chieffi, A., & Limongi, M. (2008) · The Astrophysical Journal · doi:10.1086/592600 · Cited by 82 · see citing works
“Although the resolution is less than ideal (R ¼ 55; 000 in this study compared with R 90; 000 in our previous studies of Mg isotope ratios in giant stars in globular clusters), we have measured theMg isotope ratios using the samemethods as Yong et al. (2003a, 2006a).”
BackgroundMethodResultInfluentialSelf-citationCHEMICAL TAGGING OF THREE DISTINCT POPULATIONS OF RED GIANTS IN THE GLOBULAR CLUSTER NGC 6752
Carretta, E., Bragaglia, A., Gratton, R., Lucatello, S., & D’Orazi, V. (2012) · The Astrophysical Journal Letters · doi:10.1088/2041-8205/750/1/l14 · Cited by 81 · see citing works
“In the large dataset by Carretta et al. (2007) there is not a clear distinction between these groups; on the other hand, in the combined sample shown by Yong et al. (2003) (their Fig.4) three groups stand out in the Al-Na plane.”
BackgroundLow-resolution spectroscopy of main sequence stars belonging to 12 Galactic globular clusters
Pancino, E., Rejkuba, M., Zoccali, M., & Carrera, R. (2010) · Astronomy and Astrophysics · doi:10.1051/0004-6361/201014383 · Cited by 81 · see citing works
“The O-Na anticorrelation is well established in NGC 6752 from observations of both MS and SGB (Gratton et al., 2001; Carretta et al., 2005), as well as of RGB (Norris & Da Costa, 1995; Yong et al., 2003).”
BackgroundNitrogen abundances in giant stars of the globular cluster NGCPreprint
Yong, D., Grundahl, F., Johnson, J. A., & Asplund, M. (2008) · Cited by 80 · see citing works
Self-citationYong, D., Meléndez, J., Grundahl, F., Roederer, I. U., Norris, J. E., Milone, A. P., Marino, A. F., Coelho, P., McArthur, B. E., Lind, K., et al. (2013) · Monthly Notices of the Royal Astronomical Society · doi:10.1093/mnras/stt1276 · Cited by 91 · see citing works
“The new [X/Fe] values are in very good agreement with our previously published values (Grundahl et al. 2002; Yong et al. 2003, 2005), although we have not attempted to reconcile the two sets of abundances.”
BackgroundResultInfluentialSelf-citationTHE MOST METAL-POOR STARS. I. DISCOVERY, DATA, AND ATMOSPHERIC PARAMETERS
Norris, J. E., Bessell, M. S., Yong, D., Christlieb, N., Barklem, P. S., Asplund, M., Murphy, S. J., Beers, T. C., Frebel, A., & Ryan, S. G. (2012) · The Astrophysical Journal · doi:10.1088/0004-637x/762/1/25 · Cited by 78 · see citing works
“The data were processed with standard IRAF15 procedures (supplemented by the cosmic-ray removal algorithm of Pych 2004) to obtain flat-fielded, wavelength-calibrated, comic-ray-corrected, co-added, and continuum-normalized spectra (see, e.g., Yong et al. 2003a).”
MethodSelf-citationMagnesium Isotopic Abundance Ratios in Cool Stars
Yong, D., Lambert, D. L., & Ivans, I. I. (2003) · The Astrophysical Journal · doi:10.1086/379369 · Cited by 77 · see citing works
“We have unveiled the crucial role played by AGB stars in the chemical evolution of globular cluster NGC 6752 (Yong et al. 2003).”
BackgroundResultSelf-citationRoediger, J., Courteau, S., Graves, G. J. M., & Schiavon, R. P. (2013) · The Astrophysical Journal Supplement Series · doi:10.1088/0067-0049/210/1/10 · Cited by 77 · see citing works
Allen, D. M., & Barbuy, B. (2006) · Astronomy and Astrophysics · doi:10.1051/0004-6361:20064912 · Cited by 77 · see citing works
“Yong et al. (2003) observed a similar behaviour in the relation between∆[Fe/H] and Te f f for giants of the metal-poor globular cluster NGC 6752, also becoming more pronounced for the cooler stars.”
BackgroundMagnesium Isotope Ratios in Hyades Stars
Yong, D., Lambert, D. L., Prieto, C. A., & Paulson, D. B. (2004) · The Astrophysical Journal · doi:10.1086/381701 · Cited by 75 · see citing works
“As previously shown by McWilliam & Lambert (1988) and Yong et al. (2003a), Region 1 tends to give higher ratios than Regions 2 and 3.”
BackgroundMethodResultInfluentialSelf-citationLow-resolution spectroscopy of main sequence stars belonging to 12 Galactic globular clusters
Pancino, E., Rejkuba, M., Zoccali, M., & Carrera, R. (2010) · Springer Link (Chiba Institute of Technology) · doi:10.1051/0004-6361/201014383/pdf · Cited by 72 · see citing works
Three New Low-Energy Resonances in the Ne22(p,γ)Na23 Reaction
Cavanna, F., Depalo, R., Aliotta, M., Anders, M., Bemmerer, D., Best, A., Boeltzig, A., Broggini, C., Bruno, C. G., Caciolli, A., et al. (2015) · Physical Review Letters · doi:10.1103/physrevlett.115.252501 · Cited by 70 · see citing works
Abundance Anomalies and Rotational Evolution of Low‐Mass Red Giants: A Maximal Mixing Approach
Chaname, J., Pinsonneault, M., & Terndrup, D. M. (2005) · The Astrophysical Journal · doi:10.1086/432410 · Cited by 69 · see citing works
Fe and Al Abundances for 180 Red Giants in the Globular Cluster Omega Centauri (NGC 5139)
Johnson, C. I., Pilachowski, C. A., Simmerer, J., & Schwenk, D. R. (2008) · The Astrophysical Journal · doi:10.1086/588634 · Cited by 67 · see citing works
“…scenario, O deficient, Na/Al enhanced stars must have preferentially formed out of enriched gas relative to “O–normal” stars (i.e., [O/Fe]∼+0.30) and Yong et al. (2003) point out that even with no O present in the enriched gas, these stars would require a composition of 90% enriched, 10%…”
BackgroundInfluentialRubidium and Lead Abundances in Giant Stars of the Globular Clusters M4 and M5
Yong, D., Lambert, D. L., Paulson, D. B., & Carney, B. W. (2008) · The Astrophysical Journal · doi:10.1086/524376 · Cited by 63 · see citing works
“…of Mg, but the normal stars in M13 and NGC 6752 (i.e., cluster stars with high O, high Mg, low Na, low Al, and whose OYAl abundances match field stars at the same metallicity) had Mg isotope ratios that exceeded measurements in comparable metallicity field stars (Yong et al. 2003a, 2003b, 2006a).”
MethodSelf-citationStraniero, O., Imbriani, G., Strieder, F., Bemmerer, D., Broggini, C., Caciolli, A., Corvisiero, P., Costantini, H., Cristallo, S., DiLeva, A., et al. (2013) · The Astrophysical Journal · doi:10.1088/0004-637x/763/2/100 · Cited by 62 · see citing works
“Nonetheless, this hypothesis is in contrast with the more recent discovery of O-Na and the Mg-Al anticorrelations in less evolved turn-off and sub-giant stars (Gratton et al. 2001; Yong et al. 2003).”
ResultVentura, P., Carini, R., & D’Antona, F. (2011) · Monthly Notices of the Royal Astronomical Society · doi:10.1111/j.1365-2966.2011.18997.x · Cited by 63 · see citing works
Mg Isotope Ratios in Giant Stars of the Globular Clusters M13 and M71
Yong, D., Aoki, W., & Lambert, D. L. (2006) · The Astrophysical Journal · doi:10.1086/498974 · Cited by 59 · see citing works
“…have also exploited the molecular MgH lines to measure Mg isotope ratios in cool dwarfs and giants (e.g., Tomkin & Lambert 1976, 1979, 1980; Barbuy 1985, 1987; Barbuy et al. 1987; Lambert &McWilliam 1986; McWilliam & Lambert 1988; Gay & Lambert 2000; Yong et al. 2003b, 2004 and references therein).”
BackgroundMethodInfluentialSelf-citationThe Relationship between Globular Cluster Mass, Metallicity, and Light-element Abundance Variations
Nataf, D. M., Wyse, R. F. G., Schiavon, R. P., Ting, Y.-S., Minniti, D., Cohen, R. E., Fernández-Trincado, J. G., Geisler, D., Nitschelm, C., & Frinchaboy, P. M. (2019) · The Astronomical Journal · doi:10.3847/1538-3881/ab1a27 · Cited by 57 · see citing works
“Similarly, stars with relatively lower abundances of magnesium (likely 24Mg) also tend to have relatively elevated abundances of aluminum, with the total abundance of aluminum and magnesium not varying within individual globular clusters (Shetrone 1996; Yong et al. 2003).”
BackgroundObserving multiple stellar populations with VLT/FORS2
Nardiello, D., Milone, A. P., Piotto, G., Marino, A. F., Bellini, A., & Cassisi, S. (2014) · Astronomy and Astrophysics · doi:10.1051/0004-6361/201424117 · Cited by 56 · see citing works
“In particular, the e are three main groups of stars with different Na, O, N, Al, that populates three different RGBs when appropriate indices are used (like thec1 andcy Stromgren indices or thecU,B,I visual index, Yong et al. 2008, 2003, Carretta et al. 2012, Monelli et al. 2013).”
BackgroundMethodYong, D., Meléndez, J., Cunha, K., Karakas, A. I., Norris, J. E., & Smith, V. V. (2008) · The Astrophysical Journal · doi:10.1086/592229 · Cited by 56 · see citing works
“Another exception is represented by theminor isotopes of Mg, whose ratios 25Mg/24Mg and 26Mg/24Mg in ‘‘normal’’ cluster stars exceed the values found in field stars at the same metallicity (Shetrone 1996; Yong et al. 2003a, 2003b, 2006).”
BackgroundSelf-citationHigher D or Li: probes of physics beyond the standard model
Olive, K. A., Petitjean, P., Vangioni–Flam, E., & Silk, J. I. (2012) · Monthly Notices of the Royal Astronomical Society · doi:10.1111/j.1365-2966.2012.21703.x · Cited by 55 · see citing works
Chemical Evolution of Mg Isotopes versus the Time Variation of the Fine Structure Constant
Ashenfelter, T., Mathews, G. J., & Olive, K. A. (2004) · Physical Review Letters · doi:10.1103/physrevlett.92.041102 · Cited by 54 · see citing works
The chemical evolution of globular clusters - I. Reactive elements and non-metals
Marcolini, A., Gibson, B. K., Karakas, A. I., & Sánchez–Blázquez, P. (2009) · Monthly Notices of the Royal Astronomical Society · doi:10.1111/j.1365-2966.2009.14591.x · Cited by 53 · see citing works
“A further important test for our model is determining how well it can reproduce the Mg isotopic ratios observed in GC stars (e.g. for NGC 6752 Yong et al. 2003).”
BackgroundMethodStellar models of multiple populations in globular clusters – I. The main sequence of NGC 6752
Dotter, A., Ferguson, J. W., Conroy, C., Milone, A. P., Marino, A. F., & Yong, D. (2014) · Monthly Notices of the Royal Astronomical Society · doi:10.1093/mnras/stu2170 · Cited by 52 · see citing works
“…presents a case study of the Galactic GC NGC 6752 that, due to its proximity and other distinguishing characteristics, has been the focus of significant observational effort in both spectroscopy (Grundahl et al. 2002; Yong et al. 2003, 2005, 2008, 2013) and photometry (Milone et al. 2010, 2013).”
BackgroundMethodSelf-citationRubidium and Lead Abundances in Giant Stars of the Globular Clusters M13 and NGC 6752
Yong, D., Aoki, W., Lambert, D. L., & Paulson, D. B. (2006) · The Astrophysical Journal · doi:10.1086/499580 · Cited by 50 · see citing works
“In ‘‘normal’’ stars, we found ratios 25Mg/24Mg and 26Mg/24Mg that exceeded those of field stars at the same metallicity (Yong et al. 2003b).”
BackgroundSelf-citationMagnesium isotope ratios in Hyades starsPreprint
Yong, D., Lambert, D. L., Prieto, C. A., & Paulson, D. B. (2003) · Cited by 50 · see citing works
Self-citationRoederer, I. U., Mateo, M. L., Bailey, J. I., Spencer, M., Crane, J. D., & Shectman, S. A. (2015) · Monthly Notices of the Royal Astronomical Society · doi:10.1093/mnras/stv2462 · Cited by 49 · see citing works
“…Carretta et al. 2009b), NGC 2419 (Cohen & Kirby 2012; Mucciarelli et al. 2012), NGC 2808 (Carretta et al. 2009b; Carretta 2014), NGC 4833 (Carretta et al. 2014; Roederer & Thompson 2015), NGC 6752 (Gratton et al. 2001; Yong et al. 2003), and possibly M62 (Yong et al. 2014a) and M92 (Shetrone 1996).”
The Most Metal-Poor Stars. I. Discovery, Data, and Atmospheric ParametersPreprint
Frebel, A., Norris, J. E., Bessell, M. S., Yong, D., Christlieb, N., Barklem, P. S., Asplund, M., Murphy, S. J., Beers, T. C., & Ryan, S. G. (2012) · DSpace@MIT (Massachusetts Institute of Technology) · Cited by 48 · see citing works
Self-citationMilone, A. P., Marino, A. F., Bedin, L. R., Anderson, J., Apai, D., Bellini, A., Dieball, A., Salaris, M., Libralato, M., Nardiello, D., et al. (2019) · Monthly Notices of the Royal Astronomical Society · doi:10.1093/mnras/stz277 · Cited by 47 · see citing works
White dwarf–red giant mergers, early-type R stars, J stars and lithium
Zhang, X., & Jeffery, C. S. (2013) · Monthly Notices of the Royal Astronomical Society · doi:10.1093/mnras/stt035 · Cited by 46 · see citing works
“9) and 0.0 to 0.8 (Yong et al. 2003; Bekki et al. 2007).”
InfluentialThe origin and chemical evolution of the exotic globular cluster NGC 3201
Muñoz, C., Geisler, D., & Villanova, S. N. (2013) · Monthly Notices of the Royal Astronomical Society · doi:10.1093/mnras/stt868 · Cited by 46 · see citing works
“However, unlike the O-Na anticorrelation, a Mg-Al anticorrelation is more difficult to reproduce in simulations and it remains a puzzle to explain the possible sources that would produce this anticorrelation (Denissenkov et al. 1998; Yong et al. 2003).”
BackgroundEvolution of long-lived globular cluster stars
Chantereau, W., Charbonnel, C., & Meynet, G. (2016) · Astronomy and Astrophysics · doi:10.1051/0004-6361/201628418 · Cited by 46 · see citing works
“However, Mg-depletion is also observed in the most Na- and Al-rich stars in NGC 6752 (Yong et al. 2003).”
BackgroundTHE CHEMICAL COMPOSITION OF PRAESEPE (M44)
Boesgaard, A. M., Roper, B. W., & Lum, M. G. (2013) · The Astrophysical Journal · doi:10.1088/0004-637x/775/1/58 · Cited by 44 · see citing works
“It is not expected that Mg would be increased in the giants, rather the Mg → Al cycling would result in a decrease in Mg. Yong et al. (2003) find a positive correlation between Al and Mg for some giant stars in the globular cluster, NGC 6752, apparently due to an increase in 26Mg (see their Figure…”
BackgroundMeléndez, J., & Cohen, J. G. (2009) · The Astrophysical Journal · doi:10.1088/0004-637x/699/2/2017 · Cited by 43 · see citing works
“Two other MgH features at 513.87 and 514.02 nm (e.g. Yong et al. 2003; Melendez & Cohen 2007) were also used for obtaining the Mg isotopic ratios.”
MethodResultInfluentialOn variations in the fine-structure constant and stellar pollution of quasar absorption systems
Fenner, Y., Murphy, M. T., & Gibson, B. K. (2005) · Monthly Notices of the Royal Astronomical Society · doi:10.1111/j.1365-2966.2005.08781.x · Cited by 41 · see citing works
Heavy elements abundances in turn-off stars and early subgiants in NGC 6752
James, G., François, P., Bonifacio, P., Bragaglia, A., Carretta, E., Centurión, M., Clementini, G., Desidera, S., Gratton, R., Grundahl, F., et al. (2004) · Astronomy and Astrophysics · doi:10.1051/0004-6361:20034014 · Cited by 40 · see citing works
“…most of them being metallicity (in this case, iron abundances) determinations (Zinn & West 1984; Minniti et al. 1993; Carretta & Gratton 1997), and some others beeing abundance analyses including several other elements (Norris & Da Costa 1995; Grundahl et al. 2002; Yong et al. 2003).”
BackgroundInfluentialSelf-citationStar-to-Star Na and O Abundance Variations along the Red Giant Branch in NGC 2808
Carretta, E., Bragaglia, A., & Cacciari, C. (2004) · The Astrophysical Journal · doi:10.1086/423034 · Cited by 40 · see citing works
“However, recently S04 found that the anticorre-log g ∼ 1.0 lation between O and Mg isotopic ratios in M13 is very similar to that in NGC 6752 (Yong et al. 2003), where the primordial pattern of chemical anomalies is well established.”
BackgroundInfluentialThe chemical composition of a regular halo globular cluster: NGC 5897
Koch, A., & McWilliam, A. (2014) · Astronomy and Astrophysics · doi:10.1051/0004-6361/201323119 · Cited by 38 · see citing works
“Thus we conclude in holding with Yong et al. (2003) that a combination of moderate stellar parameter changes is the most likely cause for the systematic differences in the Fei and Feii abundances.”
BackgroundAbundance Anomalies and Rotational Evolution of Low Mass Red Giants: A Maximal Mixing ApproachPreprint
Chanamé, J., Pinsonneault, M. H., & Terndrup, D. M. (2005) · Cited by 37 · see citing works
The fraction of first- and second-generation stars in globular clusters
Carretta, E. (2013) · Astronomy and Astrophysics · doi:10.1051/0004-6361/201322103 · Cited by 36 · see citing works
“Among many others, nitrogen abundances were studied by Yong et al. (2008), whereas a detailed study of the Mg isotopes was performed by Yong et al. (2003).”
BackgroundMethodDetailed abundances of 15 stars in the metal-poor globular cluster NGC 4833★
Roederer, I. U., & Thompson, I. B. (2015) · Monthly Notices of the Royal Astronomical Society · doi:10.1093/mnras/stv546 · Cited by 36 · see citing works
“Equivalent widths measured from their UVES spectra of stars in NGC 6752 are in reasonable agreement with those measured from R ∼ 110,000 spectra obtained by Yong et al. (2003), 〈∆〉 = +1.7±0.4 mÅ (σ = 5.6 mÅ).”
InfluentialMAGNESIUM ISOTOPE RATIOS IN ω CENTAURI RED GIANTS
Da Costa, G. S., Norris, J. E., & Yong, D. (2013) · The Astrophysical Journal · doi:10.1088/0004-637x/769/1/8 · Cited by 38 · see citing works
“Subsequent work by Yong et al. (2003a, 2006) on the Mg isotope ratios for red giants in the clusters NGC 6752 and M13, and by Meléndez & Cohen (2009) for M71, have verified and extended the results of Shetrone (1996).”
BackgroundMethodResultInfluentialSelf-citationSpectrum syntheses of high-resolution integrated light spectra of Galactic globular clusters★
Sakari, C. M., Shetrone, M. D., Venn, K. A., McWilliam, A., & Dotter, A. (2013) · Monthly Notices of the Royal Astronomical Society · doi:10.1093/mnras/stt1026 · Cited by 35 · see citing works
“In M 13, NGC 6752, and M 71, Yong et al. (2003, 2006) found24Mg:25Mg:26Mg ratios ranging from 48 : 13 : 39 to 83 : 10 : 7.”
Self-citationA RE-EVALUATION OF THE EVOLVED STARS IN THE GLOBULAR CLUSTER M13
Sandquist, E. L., Gordon, M., Levine, D., & Bolte, M. (2010) · The Astronomical Journal · doi:10.1088/0004-6256/139/6/2374 · Cited by 35 · see citing works
“Examination of bright giants in NGC 6752 (Yong et al. 2003; Carretta et al. 2008) have revealed no super O-poor stars.”
BackgroundPrecise reddening and metallicity of NGC 6752 from FLAMES spectra
Gratton, R., Bragaglia, A., Carretta, E., Angeli, F. D., Lucatello, S., Piotto, G., & Recio-Blanco, A. (2005) · Astronomy and Astrophysics · doi:10.1051/0004-6361:20053019 · Cited by 34 · see citing works
“The O-Na anticorrelation in NGC 6752 is well known from previous observations of both TO and subgiant stars (Gratton et al. 2001; Carretta et al. 2005), as well as of red giants (Carretta 1994; Norris & Da Costa 1995; Yong et al. 2003).”
BackgroundAshenfelter, T. P., Mathews, G. J., & Olive, K. A. (2004) · The Astrophysical Journal · doi:10.1086/423929 · Cited by 34 · see citing works
“In support of this possibility, a new study of Mg isotopic abundances in stars in the globular cluster NGC 6752 (Yong et al. 2003) affects the case for assuming a solar isotopic composition.”
BackgroundGlobular Cluster Archaeology: Hydrogen‐burning Nucleosynthesis and Extra Mixing in Extinct Stars
Denissenkov, P. A., & Weiß, A. (2004) · The Astrophysical Journal · doi:10.1086/381387 · Cited by 33 · see citing works
“Consequently, in GC stars with ½O=Fe P 0, provided that this abundance anomaly is interpreted as a result of accretion of stellar material processed in HBB, [24Mg/Fe] should always be less than [O/Fe], which has never been observed as yet (e.g., Shetrone 1996; Yong et al. 2003).”
BackgroundFundamental constants: from measurement to the universe, a window on gravitation and cosmology
Uzan, J.-P. (2025) · Living Reviews in Relativity · doi:10.1007/s41114-025-00059-y · Cited by 36 · see citing works
Lapenna, E., Lardo, C., Mucciarelli, A., Salaris, M., Ferraro, F. R., Lanzoni, B., Massari, D., Stetson, P. B., Cassisi, S., & Savino, A. (2016) · The Astrophysical Journal Letters · doi:10.3847/2041-8205/826/1/l1 · Cited by 30 · see citing works
“The average [Fe II/H] abundance is consistent with the values measured in RGB stars by Yong et al. (2003), Gratton et al. (2005), and Carretta et al. (2007, 2009a), while [Fe I/H] is 0.22 dex lower than the metallicity inferred from Fe II lines.”
InfluentialCosmic nucleosynthesis: A multi-messenger challenge
Diehl, R., Korn, A. J., LEIBUNDGUT, B., Lugaro, M. A., & Wallner, A. (2022) · Progress in Particle and Nuclear Physics · doi:10.1016/j.ppnp.2022.103983 · Cited by 29 · see citing works
Star-to-star Na and O abundance variations along the red giant branch in NGC 2808Preprint
Carretta, E., Bragaglia, A., & Cacciari, C. (2004) · Cited by 28 · see citing works
Wolf‐Rayet and OB Star Self‐Enrichment of Globular Clusters?
Smith, G. H. (2006) · Publications of the Astronomical Society of the Pacific · doi:10.1086/507654 · Cited by 26 · see citing works
“In M13, the spread in [Na/Fe] is ∼0.8– 1.0 dex (Pilachowski et al. 1996; Kraft et al. 1997; Cavallo & Nagar 2000; Johnson et al. 2005), similar to the range found in NGC 6752 by Grundahl et al. (2002) and Yong et al. (2003).”
BackgroundResultInfluentialPiatti, D., Masha, E., Aliotta, M., Balibrea-Correa, J., Barile, F., Bemmerer, D., Best, A., Boeltzig, A., Broggini, C., Bruno, C. G., et al. (2022) · The European Physical Journal A · doi:10.1140/epja/s10050-022-00827-2 · Cited by 24 · see citing works
Star clusters forming in a low-metallicity starburst – rapid self-enrichment by (very) massive stars
Lahén, N., Naab, T., & Szécsi, D. (2024) · Monthly Notices of the Royal Astronomical Society · doi:10.1093/mnras/stae904 · Cited by 23 · see citing works
- Authors
- Yong, D., Grundahl, F., Lambert, D. L., Nissen, P. E., & Shetrone, M. D.
- Affiliations
- The University of Texas at Austin (US)
- Aarhus University (DK)
- McDonald Observatory (US)
- Venue
- Astronomy & Astrophysics
- Publisher
- EDP Sciences
- Published
- 2003-04-23
- Volume
- 402
- Issue
- 3
- Pages
- 985-1001
- ISSN
- 0004-6361 (ISSN-L)
- 1432-0746
- OpenAlex
- W2163849321
- Cited by
- 149
- References
- 62
- Citations by year
- 2026: 1 · 2025: 2 · 2024: 4 · 2023: 1 · 2022: 4 · 2021: 2 · 2020: 3 · 2019: 8 · 2018: 5 · 2017: 4 · 2016: 4 · 2015: 4 · 2014: 5 · 2013: 14 · 2012: 7
- FWCI
- 10.23
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Astronomy and Astrophysics (publishedVersion)
- arXiv (Cornell University) (submittedVersion)
- arXiv (Cornell University)
- Funders
- National Aeronautics and Space Administration
- Welch Foundation
- Topics
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Stellar, planetary, and galactic studies
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Galaxies: Formation, Evolution, Phenomena
- Physical Sciences › Physics and Astronomy › Instrumentation › Astronomy and Astrophysical Research
- Keywords
- NGC 6752, globular clusters, red giants, stellar nucleosynthesis, star-to-star abundance variations, chemical pollution, 26Mg, 25Mg, 24Mg, supernova ejecta
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
