GCN Circular 5946
Subject
GRB 061210: Possible Host Galaxy (S2-G2) Keck Spectrum
Event
Date
2006-12-21T09:11:56Z (20 years ago)
From
S. Bradley Cenko at Caltech <cenko@srl.caltech.edu>
S. B. Cenko, M. Kasliwal, P. B. Cameron, S. R. Kulkarni (Caltech) and D.
B. Fox (Penn State) report on behalf of a larger collaboration:
We have obtained a spectrum of the possible host galaxy S2-G2 (Berger, GCN
5922) of the short-hard GRB061210 (Cannizzo et al., GCN 5904). S2-G2 is
an r=21 galaxy with a bulge-dominated morphology on the outskirts of the
possible XRT afterglow S2 (Godet et al., GCN 5921). Using the
Low-Resolution Imaging Spectrometer mounted on the 10-m Keck I telescope,
we obtained 2 x 30 min spectra of this galaxy at a mean epoch of ~ 13:30
Dec 19 UT. We measure a redshift of z = 0.41 based on emission lines of
[OII], [OIII], and HI. With a 15-150 keV fluence of 1.1e-6 erg/cm^2
(Palmer et al., GCN 5905), this corresponds to an isotropic prompt energy
release of 4.6e50 ergs.