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An empirical spectral library of chemically well characterized stars for stellar population modelling

Published online by Cambridge University Press:  17 August 2012

André de Castro Milone ,
Anne E. Sansom ,
Patricia Sánchez-Blázquez ,
Alexandre Vazdekis ,
Jesus Falcón-Barroso  and
Carlos Allende Prieto
André de Castro Milone
Affiliation:
Divisão de Astrofísica, Instituto Nacional de Pesquisas Espaciais, Av. dos Astronautas 1758, São José dos Campos, SP 12227-010, Brazil email: [email protected]
Anne E. Sansom
Affiliation:
Jeremiah Horrocks Institute, University of Central Lancashire, Preston, Lancs PR1 2HE, UK
Patricia Sánchez-Blázquez
Affiliation:
Departamento de Física Teórica, Universidad Autónoma de Madrid, Cantoblanco 28409, Madrid, Spain
Alexandre Vazdekis
Affiliation:
Instituto de Astrofísica de Canarias, Vía Láctea s/n, E-38205 La Laguna, Tenerife, Spain Departamento de Astrofísica, Universidad de La Laguna, E-38205 La Laguna, Tenerife, Spain
Jesus Falcón-Barroso
Affiliation:
Instituto de Astrofísica de Canarias, Vía Láctea s/n, E-38205 La Laguna, Tenerife, Spain Departamento de Astrofísica, Universidad de La Laguna, E-38205 La Laguna, Tenerife, Spain
Carlos Allende Prieto
Affiliation:
Instituto de Astrofísica de Canarias, Vía Láctea s/n, E-38205 La Laguna, Tenerife, Spain Departamento de Astrofísica, Universidad de La Laguna, E-38205 La Laguna, Tenerife, Spain
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Abstract

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With the goal of assembling a new generation of more realistic single stellar population (SSP) models, we have obtained magnesium abundances for nearly 80% of the stars of the widely employed MILES empirical spectral library. Additional spectroscopic observations of carefully selected stars have recently been obtained to improve the parametric coverage of this library. Here we report on: (i) the framework of Mg abundance determination carried out at mid-resolution, (ii) the newly acquired data, and (iii) the preliminary steps towards modelling stellar populations.

Keywords

astronomical data bases: miscellaneousstars: abundancesstars: atmospherestechniques: spectroscopic
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 7 , Symposium S284: The Spectral Energy Distribution of Galaxies , September 2011 , pp. 29 - 31
Copyright
Copyright © International Astronomical Union 2012

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