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Stellar Populations in Luminous and Ultraluminous Infrared Galaxies

Published online by Cambridge University Press:  13 April 2010

R. M. González Delgado ,
R. Cid Fernandes ,
E. Pérez ,
J. Rodríguez-Zaurín ,
C. Tadhunter ,
O. Dors ,
V. Muñoz Marín  and
M. Villar-Martín
R. M. González Delgado
Affiliation:
Instituto de Astrofísica de Andalucía-CSIC, Spain
R. Cid Fernandes
Affiliation:
Dep. de Física-CFM, Univ. Federal de Santa Catarina, Brasil
E. Pérez
Affiliation:
Instituto de Astrofísica de Andalucía-CSIC, Spain
J. Rodríguez-Zaurín
Affiliation:
Instituto de Estructura de la Materia-CSIC, Spain
C. Tadhunter
Affiliation:
Dep. Physics and Astronomy, Univ. Sheffield, UK
O. Dors
Affiliation:
Instituto de Astrofísica de Andalucía-CSIC, Spain
V. Muñoz Marín
Affiliation:
Instituto de Astrofísica de Andalucía-CSIC, Spain
M. Villar-Martín
Affiliation:
Instituto de Astrofísica de Andalucía-CSIC, Spain
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Abstract

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The goal of this work is to determine the properties of the stellar populations in a sample of LIRGs and ULIRGs. Using the ages as a clock we investigate: a) whether LIRGs-ULIRGs evolve into Radio Galaxies and QSOs; b) whether cool LIRGs-ULIRGs can evolve into warm LIRGs-ULIRGs; c) the merger sequence deduced from the morphological studies is reflected in the properties of the stellar populations. Using evolutionary synthesis models with high spectral resolution stellar libraries we have found that the intermediate age stellar population dominates at optical wavelengths. The stellar population in LIRGs is similar to ULIRGs and ULIRGs-QSOs transition objects.

Keywords

galaxies: stellar populations — galaxies: evolution
Type
Poster Papers
Information
Proceedings of the International Astronomical Union , Volume 5 , Symposium S262: Stellar Populations – Planning for the Next Decade , August 2009 , pp. 341 - 342
Copyright
Copyright © International Astronomical Union 2010

References

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