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Modeling the ISM Properties of Metal-Poor Galaxies and Gamma-Ray Burst Hosts

Published online by Cambridge University Press:  01 June 2008

Emily M. Levesque
Affiliation:
Institute for Astronomy, University of Hawaii2680 Woodlawn Dr., Honolulu, HI 96822
Lisa J. Kewley
Affiliation:
Institute for Astronomy, University of Hawaii2680 Woodlawn Dr., Honolulu, HI 96822
Kirsten Larson
Affiliation:
Institute for Astronomy, University of Hawaii2680 Woodlawn Dr., Honolulu, HI 96822
Leonie Snijders
Affiliation:
Leiden Observatory, Leiden UniversityP.O. Box 9513, 2300 RA Leiden, The Netherlands
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Abstract

Recent research has suggested that long-duration gamma-ray bursts (LGRBs) occur preferentially in low-metallicity environments, but the exact nature of this correlation is currently a matter of intense debate. We use the newest generation of the Starburst99/Mappings code to generate an extensive suite of cutting-edge stellar population synthesis models, covering a wide range of physical parameters specifically tailored for modeling the ISM environments of metal-poor galaxies and LGRB host galaxies. With our models, we generate optical emission line diagnostics, which will allow us to examine the ISM properties and stellar populations of a variety of galaxy populations in unprecedented detail. While accurately modeling low-metallicity galaxies still poses a challenge to these models, future improvements to these grids will have profound consequences for our understanding of metal-poor galaxies, their ISM environments, and the nature of their role as the hosts of LGRBs.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2008

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