[vsnet-grb-info 5488] GRB 071227: Magellan redshift confirmation
GCN Circulars
gcncirc at capella.gsfc.nasa.gov
Sat Dec 29 00:01:31 JST 2007
TITLE: GCN CIRCULAR
NUMBER: 7154
SUBJECT: GRB 071227: Magellan redshift confirmation
DATE: 07/12/28 15:01:25 GMT
FROM: Edo Berger at Princton U <eberger at astro.princeton.edu>
E. Berger (Princeton), N. Morrell and M. Roth (LCO) report:
"We obtained three 900-s spectra of the candidate host galaxy of GRB
071227 (GCNs 7150,7151) with IMACS on the Magellan/Baade telescope. We
find the same emission line noted by D'Avanzo et al. (GCN 7152), as well
as a second emission line which corresponds to [OIII]5006 at the same
redshift. From preliminary wavelength calibration we find z=0.384. If
this is the host galaxy of GRB 071227, the observed fluence of 2.2e-7
erg/cm^2 (GCN 7148) translates to an isotropic-equivalent gamma-ray energy
of 8e49 erg, typical of previous short GRBs."
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