[vsnet-grb-info 1919] GRB 050803: Keck Observations

[GCN Circulars]

TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  3758
SUBJECT: GRB 050803: Keck Observations
DATE:    05/08/04 15:25:42 GMT
FROM:    Josh Bloom at UC Berleley  <jbloom at astron.berkeley.edu>

GRB 050803: Keck Observations

J. S. Bloom, D. Perley, R. Foley (UCB), J. X. Prochaska (UCSC), H. W.  
Chen (MIT), & D. Starr (Gemini) report:

"R-band imaging of field of GRB 050803 (GCN 3748; 3757) with ESI/Keck  
II shows several faint sources in the uncertainty circle of the XRT  
(GCN 3752), including the extended object noted in GCN 3753.  
Spectroscopy of this source reveals it to be a star forming galaxy at  
z=0.422, based upon redshifted [OII], [OIII], and H-beta emission  
lines. We expect ongoing analysis to improve the precision of this  
redshift."

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