GCN Circular 6101
Subject
GRB 070209: Redshift of a galaxy in the error circle of XRT source
Date
2007-02-13T07:20:20Z (17 years ago)
From
Edo Berger at Carnegie Obs <eberger@ociw.edu>
E. Berger (Carnegie Observatories) and D. Fox (Penn State) report on
behalf of a larger collaboration:
"Using GMOS on the Gemini-south telescope we obtained a 2400 spectrum of
an apparent galaxy located within the error circle of XRT source #1 (GCN
6095). This is the only X-ray source which exhibits signs of fading and
is the nearest to the BAT error circle of this burst (GCN 6087). We find
that the redshift of the galaxy is z=0.314 based on the detection of CaII
H&K, as well as [OII] and [OIII] emission lines. At this redshift, the
isotropic-equivalent energy of the burst is 2.6e48 erg."