GCN Circular 2791
Subject
GRB 041006: Redshift confirmed
Event
Date
2004-10-09T02:56:08Z (21 years ago)
From
Paul Price at IfA,UH <price@ifa.hawaii.edu>
P.A. Price (IfA, UH), K. Roth (Gemini), J. Rich, B.P. Schmidt, B.A.
Peterson (RSAA, ANU), L. Cowie (IfA, UH), C. Smith and A. Rest (CTIO)
report:
We have observed the optical afterglow of GRB 041006 (GCN #2765) with
the Gemini North Telescope + GMOS at 2004 Oct 7.36 UT. Observations
consisted of 4 integrations of 1800 sec with the R400 grating and a 1
arcsec slit. Inspection of a single frame reveals absorption lines at
6750A and 6810A, which we interpret as corresponding to the Ca II H and
K lines at a mean redshift of z = 0.716, in broad agreement with the
redshift of z = 0.712 proposed by Fugazza et al. (GCN #2782).
We thank the staff of Gemini North for performing these observations.