On the Metal Aversion of LGRBs

Details On the Metal Aversion of LGRBs On the Metal Aversion of LGRBs

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21931005g&link_type=abstract

American Astronomical Society, AAS Meeting #219, #310.05

Astronomy and Astrophysics

Astronomy

Scientific paper

We discuss recent observations of several high metallicity LGRBs hosts. We then compare the entire population of LGRB hosts with measured metallicities to the hosts of Type II and broad-lined Type Ic SNe as well as the star-forming SDSS galaxy population using several methods of analysis. We argue that even though a few LGRBs do lie in fairly metal rich hosts, the general population of LGRB hosts is surprisingly metal poor, and that metallicity must be an important factor in the formation of LGRBs. Finally we conclude with a discussion of the potential importance and practicality of obtaining spatiality resolved metallicity measurement of LGRB host galaxies.

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