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MG and Fe absorption features in elliptical galaxies
Abstract
Fe and Mg indices from two homogenous collections of nuclear elliptical galaxy spectra are compared with model indices. In the average giant elliptical, the [Mg/Fe] ratio exceeds that of the most metal-rich stars in the solar neighborhood by ~0.2-0.3 dex, with a large spread about this mean. This result implies a variable "enrichment effectiveness" of Type II supernovae (SNs) compared with Type Ia SNs in the evolution of ellipticals, caused perhaps by differences in star formation time scales, the initial mass function, or the amount of Fe versus Mg ejected in galactic winds.
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Citations
Cited by
Galactic Stellar and Substellar Initial Mass Function
Chabrier, G. (2003) · Publications of the Astronomical Society of the Pacific · doi:10.1086/376392 · Cited by 9,071
The Apache Point Observatory Galactic Evolution Experiment (APOGEE)
Majewski, S. R., Schiavon, R. P., Frinchaboy, P. M., Prieto, C. A., Barkhouser, R., Bizyaev, D., Blank, B., Brunner, S., Burton, A., Carrera, R., et al. (2017) · The Astronomical Journal · doi:10.3847/1538-3881/aa784d · Cited by 1,831
Hγ 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
Self-citationVazdekis, A., Sánchez-Blázquez, P., Falcón-Barroso, J., Cenarro, A. J., Beasley, M. A., Cardiel, N., Gorgas, J., & Peletier, R. F. (2010) · Monthly Notices of the Royal Astronomical Society · doi:10.1111/j.1365-2966.2010.16407.x · Cited by 802
Structure and Formation of Elliptical and Spheroidal Galaxies
Bender, R. (2016) · doi:10.15781/t28g8fm0v · Cited by 555
Metadata
- Authors
- Worthey, G., Faber, S. M., & Gonzalez, J. J.
- Venue
- The Astrophysical Journal
- Publisher
- American Astronomical Society
- Published
- 1992-10
- Volume
- 398
- Pages
- 69
- ISSN
- 0004-637X (ISSN-L)
- 1538-4357
- OpenAlex
- W1993051956
- Cited by
- 569
- References
- 0
- FWCI
- 7.86
- Type
- journal article
- Language
- en
- Open access
- closed
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