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High-mass X-ray binaries in a cosmological context

Published online by Cambridge University Press:  21 February 2013

María Celeste Artale ,
Leonardo J. Pellizza ,
Patricia B. Tissera  and
I. Felix Mirabel
María Celeste Artale*
Affiliation:
Instituto de Astronomía y Física del Espacio, CONICET-UBA, CC 67 Suc 28, Ciudad Autónoma de Buenos Aires (1428), Argentina Consejo Nacional de Investigaciones Científicas y Técnicas, Argentina
Leonardo J. Pellizza
Affiliation:
Instituto de Astronomía y Física del Espacio, CONICET-UBA, CC 67 Suc 28, Ciudad Autónoma de Buenos Aires (1428), Argentina Consejo Nacional de Investigaciones Científicas y Técnicas, Argentina
Patricia B. Tissera
Affiliation:
Instituto de Astronomía y Física del Espacio, CONICET-UBA, CC 67 Suc 28, Ciudad Autónoma de Buenos Aires (1428), Argentina Consejo Nacional de Investigaciones Científicas y Técnicas, Argentina
I. Felix Mirabel
Affiliation:
Instituto de Astronomía y Física del Espacio, CONICET-UBA, CC 67 Suc 28, Ciudad Autónoma de Buenos Aires (1428), Argentina CEA-Saclay, IRFU/DSM/Service d'Astrophysique, 91191, Gif-sur-Yvette, France
*
*email: mcartale@iafe.uba.ar
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Abstract

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Recent observational and theoretical results suggest that the production rates and luminosities of high-mass X-ray binaries depend on metallicity. To test this prediction, we combine HMXB population synthesis results with numerical simulations of galaxy formation to produce synthetic populations of HMXBs in star-forming galaxies, and compare the model predictions to observations of HMXB populations in nearby and high-redshift galaxies. Our models show a fair agreement with observations only when the HMXB production and luminosities are assumed to depend strongly on metallicity.

Keywords

X-ray: binariesgalaxies – stars: evolution – galaxies: abundancesevolution

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