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Element abundance ratios in stellar population modelling

Published online by Cambridge University Press:  10 April 2015

Daniel Thomas
Daniel Thomas*
Affiliation:
Institute of Cosmology and Gravitation, University of Portsmouth, Dennis Sciama Building, Burnaby Road, Portsmouth, PO1 3FX, UK. email: daniel.thomas@port.ac.uk SEPnet, South East Physics Network, (www.sepnet.ac.uk)
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Abstract

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I review the implementation of the effects from varying chemical element abundance ratios in stellar population modelling, focusing on α- and Fe-peak elements. A brief overview of the development of such models over the past 30 years is provided, starting with early work on the identification of relevant absorption features in the spectra of early-type galaxies in the 1980s leading to the most recent developments of the past years. Recent highlights include the adoption of new flux calibrated libraries, the inclusion of a wide range of chemical elements, the calculation of error estimates on the model, and the consideration of element variation effects on full spectra. The calibration of such models with globular clusters and some key results on the element ratios measured in early-type galaxies are presented.

Keywords

galaxies: elliptical and lenticularcD - galaxies: evolution - galaxies: formation
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 10 , Issue S311: Galaxy Masses as Constraints of Formation Models , July 2014 , pp. 63 - 68
Copyright
Copyright © International Astronomical Union 2015 

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