Unusually High Metallicity Host Of The Dark LGRB 051022
arXiv:0903.5544 · doi:10.1063/1.3155900
Abstract
We present spectroscopy of the host of GRB 051022 with GMOS nod and shuffle on Gemini South and NIRSPEC on Keck II. We determine a metallicity for the host of log(O/H)+12 = 8.77 using the R23 method (Kobulnicky & Kewley 2004 scale) making this the highest metallicity long burst host yet observed. The galaxy itself is unusually luminous for a LGRB host with a rest frame B band absolute magnitude -21.5 and has the spectrum of a rapidly star-forming galaxy. Our work raises the question of whether other dark burst hosts will show high metallicities.
arXiv commentConference procedings for The Sixth Huntsville Gamma-Ray Burst Symposium 2008 October 20-23 (3 pages, 2 figures)
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