The DOI matches its Crossref record; 31 of the 31 references it cites were found in a registry or an index.
Higher-order Balmer line indices in α/Fe-enhanced stellar population models
Open accessAbstract
We have computed the higher-order Balmer absorption line indices Hgamma and Hdelta (Worthey & Ottaviani 1997) for stellar population models with variable element ratios. The response of these indices to abundance ratio variations is taken from detailed line formation and model atmosphere calculations. We find that Hgamma and Hdelta, unlike Hbeta, are very sensitive to alpha/Fe ratio changes at super-solar metallicities. Both line indices increase significantly with increasing alpha/Fe ratio. This effect cannot be neglected when these line indices are used to derive the ages of metal-rich, unresolved stellar populations like early-type galaxies. We re-analyze the elliptical galaxy sample of Kuntschner (2000), and show that consistent age estimates from Hbeta and Hgamma are obtained, only if the effect of alpha/Fe enhancement on Hgamma is taken into account in the models. This result rectifies a problem currently present in the literature, namely that Hgamma and Hdelta have up to now led to significantly younger ages for early-type galaxies than Hbeta. Our work particularly impacts on the interpretation of intermediate to high-redshift data, for which only the higher-order Balmer lines are accessible observationally.
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Cites
Old stellar populations. 5: Absorption feature indices for the complete LICK/IDS sample of stars
Worthey, G., Faber, S. M., Gonzalez, J. J., & Burstein, D. (1994) · The Astrophysical Journal Supplement Series · doi:10.1086/192087 · Cited by 1,045
Stellar population models of Lick indices with variable element abundance ratios
Thomas, D., Maraston, C., & Bender, R. (2003) · Monthly Notices of the Royal Astronomical Society · doi:10.1046/j.1365-8711.2003.06248.x · Cited by 837
Self-citationHγ and Hδ Absorption Features in Stars and Stellar Populations
Worthey, G., & Ottaviani, D. L. (1997) · The Astrophysical Journal Supplement Series · doi:10.1086/313021 · Cited by 833
The Stellar Population Histories of Local Early-Type Galaxies. I. Population Parameters
Trager, S. C., Faber, S. M., Worthey, G., & González, J. J. (2000) · The Astronomical Journal · doi:10.1086/301299 · Cited by 680
Trager, S. C., Faber, S. M., Worthey, G., & González, J. J. (2000) · The Astronomical Journal · doi:10.1086/301442 · Cited by 655
MG and Fe absorption features in elliptical galaxies
Worthey, G., Faber, S. M., & Gonzalez, J. J. (1992) · The Astrophysical Journal · doi:10.1086/171836 · Cited by 569
THE STELLAR POPULATION HISTORIES OF LOCAL EARLY-TYPE GALAXIES. I. POPULATION PARAMETERSPreprint
Trager, S. C., Faber, S. M., Worthey, G., Gonzalez-Hernandez, J., & Studies, T. (. I. S. F. A. (2000) · Cited by 482
Trager, S. C., Faber, S. M., Worthey, G., & Gonzalez-Hernandez, J. (n.d.) · Cited by 480
Burstein, D., Faber, S. M., Gaskell, C. M., & Krumm, N. (1984) · The Astrophysical Journal · doi:10.1086/162718 · Cited by 462
Line-strength gradients in elliptical galaxies
Davies, R. L., Sadler, E. M., & Peletier, R. F. (1993) · Monthly Notices of the Royal Astronomical Society · doi:10.1093/mnras/262.3.650 · Cited by 354
Cited by
Maraston, C. (2005) · Monthly Notices of the Royal Astronomical Society · doi:10.1111/j.1365-2966.2005.09270.x · Cited by 1,907
“At high redshifts when galaxies are dominated by∼ 1 Gyr old populations as inferred from the ages and element ratios of local early-type galaxies (Thomas et al. 2004), the TP-AGB signature in the rest-frame near-IR must show up, with e.g. the rest-frame V − K colour mapping into the observedK − 10…”
BackgroundSelf-citationMcDermid, R. M., Alatalo, K., Blitz, L., Bournaud, F., Bureau, M., Cappellari, M., Crocker, A. F., Davies, R. L., Davis, T. A., de Zeeuw, P. T., et al. (2015) · Monthly Notices of the Royal Astronomical Society · doi:10.1093/mnras/stv105 · Cited by 444
SDSS IV MaNGA – spatially resolved diagnostic diagrams: a proof that many galaxies are LIERs
Belfiore, F., Maiolino, R., Maraston, C., Emsellem, E., Bershady, M. A., Masters, K. L., Yan, R., Bizyaev, D., Boquien, M., Brownstein, J. R., et al. (2016) · Monthly Notices of the Royal Astronomical Society · doi:10.1093/mnras/stw1234 · Cited by 363
Self-citationFitting the integrated spectral energy distributions of galaxies
Walcher, J., Groves, B., Budavári, T., & Dale, D. (2011) · Astrophysics and Space Science · doi:10.1007/s10509-010-0458-z · Cited by 344
Metadata
- Authors
- Thomas, D., Maraston, C., & Korn, A.
- Venue
- Monthly Notices of the Royal Astronomical Society
- Publisher
- Oxford University Press (OUP)
- Published
- 2004-06
- Volume
- 351
- Issue
- 1
- Pages
- L19-L23
- ISSN
- 0035-8711 (ISSN-L)
- 1365-2966
- OpenAlex
- W2116958776
- Cited by
- 264
- References
- 31
- FWCI
- 20.09
- Type
- journal article
- Language
- en
- Open access
- green
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- Thomas, D., Maraston, C., & Korn, A. (2004). Higher-order Balmer line indices in α/Fe-enhanced stellar population models. Monthly Notices of the Royal Astronomical Society. https://doi.org/10.1111/j.1365-2966.2004.07944.x
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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
