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Abundance ratios in stars vs. hot gas in elliptical galaxies

Published online by Cambridge University Press:  21 October 2010

Antonio Pipino
Antonio Pipino*
Affiliation:
Dept. of Physics & Astronomy, University of Southern California, 90089 Los Angeles, USA email: [email protected]
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Abstract

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I present predictions from a chemical evolution model for a self-consistent study of optical (i.e., stellar) and X-ray (i.e., gas) properties of present-day elliptical galaxies. Detailed cooling and heating processes in the interstellar medium are taken into account and allow a reliable modelling of the SN-driven galactic wind. The model simultaneously reproduces the mass-metallicity, colour-magnitude, LX - LB and LX - T relations, and the observed trend of [Mg/Fe] with σ. The "iron discrepancy" can be solved by taking into account the dust presence.

Keywords

galaxies: elliptical and lenticularcD - galaxies: abundances - X-rays: ISM
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 5 , Highlights H15: Highlights of Astronomy , November 2009 , pp. 281
Copyright
Copyright © International Astronomical Union 2010

References

Calura, F., Pipino, A., & Matteucci, F., 2008, A&A 479, 669Google Scholar
François, P., Matteucci, F., Cayrel, R., Spite, M., Spite, F., & Chiappini, C., 2004, A&A 421, 613Google Scholar
Pipino, A., Kawata, D., Gibson, B. K., & Matteucci, F., 2005, A&A 434, 553Google Scholar
Pipino, A., D'Ercole, A., & Matteucci, F., 2008, A&A 484, 679Google Scholar