The DOI matches its Crossref record; 4 of the 4 references it cites were found in a registry or an index.
HE 0107−5240, a Chemically Ancient Star. I. A Detailed Abundance Analysis
Open accessAbstract
We report on a detailed abundance analysis of HE 0107-5240, a halo giant with [Fe/H] NLTE = -5.3. This star was discovered in the course of follow-up medium-resolution spectroscopy of extremely metal-poor candidates selected from the digitized Hamburg/ESO objective-prism survey. On the basis of high-resolution VLT/UVES spectra, we derive abundances for eight elements (C, N, Na, Mg, Ca, Ti, Fe, and Ni) and upper limits for another 12 elements. A plane-parallel LTE model atmosphere has been specifically tailored for the chemical composition of HE 0107-5240. Scenarios of the origin of the abundance pattern observed in the star are discussed. We argue that HE 0107-5240 is most likely not a post-asymptotic giant branch star and that the extremely low abundances of the iron-peak and other elements are not due to selective dust depletion. The abundance pattern of HE 0107-5240 can be explained by preenrichment from a zero-metallicity Type II supernova (SN II) of 20-25 M ☉ , plus either self-enrichment with C and N or production of these elements in the asymptotic giant branch phase of a formerly more massive companion, which is now a white dwarf. However, significant radial velocity variations have not been detected within the 52 days covered by our moderate- and high-resolution spectra. Alternatively, the abundance pattern can be explained by enrichment of the gas cloud from which HE 0107-5240 formed by a 25 M ☉ first-generation star exploding as a subluminous SN II, as proposed by Umeda & Nomoto. We discuss consequences of the existence of HE 0107-5240 for low-mass star formation in extremely metal-poor environments and for currently ongoing and future searches for the most metal-poor stars in the Galaxy.
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Bennett, C. L., Halpern, M., Hinshaw, G., Jarosik, N., Kogut, A., Limon, M., Meyer, S. S., Page, L., Spergel, D. N., Tucker, G. S., et al. (2003) · The Astrophysical Journal Supplement Series · doi:10.1086/377253 · Cited by 4,860
The Evolution and Explosion of Massive Stars. II. Explosive Hydrodynamics and Nucleosynthesis
Woosley, S. E., & Weaver, T. A. (1995) · The Astrophysical Journal Supplement Series · doi:10.1086/192237 · Cited by 3,761
Kogut, A., Spergel, D. N., Barnes, C., Bennett, C. L., Halpern, M., Hinshaw, G., Jarosik, N., Limon, M., Meyer, S. S., Page, L., et al. (2003) · The Astrophysical Journal Supplement Series · doi:10.1086/377219 · Cited by 938
The Origin of Extremely Metal-poor Carbon Stars and the Search for Population III
Fujimoto, M. Y., Ikeda, Y., & Iben, Jr. (2000) · The Astrophysical Journal · doi:10.1086/312453 · Cited by 189
Cited by
A grid of MARCS model atmospheres for late-type stars: I. Methods and general properties
Gustafsson, B., Edvardsson, B., Eriksson, K., Jørgensen, U. G., Nordlund, Å., & Plez, B. (2008) · Astronomy & Astrophysics · doi:10.1051/0004-6361:200809724 · Cited by 2,654
Self-citationThe 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
Self-citationEvolution of Asymptotic Giant Branch Stars
Herwig, F. (2005) · Annual Review of Astronomy and Astrophysics · doi:10.1146/annurev.astro.43.072103.150600 · Cited by 1,051
Nucleosynthesis yields of core-collapse supernovae and hypernovae, and galactic chemical evolution
Nomoto, K., Tominaga, N., Umeda, H., Kobayashi, C., & Maeda, K. (2006) · Nuclear Physics A · doi:10.1016/j.nuclphysa.2006.05.008 · Cited by 734
Near-Field Cosmology with Extremely Metal-Poor Stars
Frebel, A., & Norris, J. E. (2015) · Annual Review of Astronomy and Astrophysics · doi:10.1146/annurev-astro-082214-122423 · Cited by 533
Umeda, H., & Nomoto, K. (2005) · The Astrophysical Journal · doi:10.1086/426097 · Cited by 306
Very low-metallicity massive stars: Pre-SN evolution models and primary nitrogen production
Hirschi, R. (2007) · Astronomy & Astrophysics · doi:10.1051/0004-6361:20065356 · Cited by 253
Abundances In Very Metal‐Poor Dwarf Stars
Cohen, J. G., Christlieb, N., McWilliam, A., Shectman, S., Thompson, I., Wasserburg, G. J., Ivans, I., Dehn, M., Karlsson, T., & Melendez, J. (2004) · The Astrophysical Journal · doi:10.1086/422576 · Cited by 168
Self-citationTracing the formation of the Milky Way through ultra metal-poor stars
Sestito, F., Longeard, N., Martin, N. F., Starkenburg, E., Fouesneau, M., González Hernández, J. I., Arentsen, A., Ibata, R., Aguado, D. S., Carlberg, R. G., et al. (2019) · Monthly Notices of the Royal Astronomical Society · doi:10.1093/mnras/stz043 · Cited by 119
On 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
Metadata
- Authors
- Christlieb, N., Gustafsson, B., Korn, A. J., Barklem, P. S., Beers, T. C., Bessell, M. S., Karlsson, T., & Mizuno‐Wiedner, M.
- Venue
- The Astrophysical Journal
- Publisher
- American Astronomical Society
- Published
- 2004-03-10
- Volume
- 603
- Issue
- 2
- Pages
- 708-728
- ISSN
- 0004-637X (ISSN-L)
- 1538-4357
- OpenAlex
- W1966081445
- Cited by
- 216
- References
- 4
- FWCI
- 14.18
- Type
- journal article
- Language
- en
- Open access
- bronze
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