[vsnet-grb-info 5065] Candidate Orphan GRB Optical Transient in IC
4779
GCN Circulars
gcncirc at capella.gsfc.nasa.gov
Sat Sep 1 15:38:24 JST 2007
TITLE: GCN CIRCULAR
NUMBER: 6772
SUBJECT: Candidate Orphan GRB Optical Transient in IC 4779
DATE: 07/09/01 06:38:20 GMT
FROM: Andrew S. Fruchter at STScI <fruchter at stsci.edu>
A. Fruchter, J. Graham and A. Levan report for a larger group:
We observed the field of the candidate orphan optical transient in IC
4779 with GMOS on the Gemini South telescope for a total integration
time of 10 minutes, starting at 1:03 UT on 1 September 2007. The
sky was photometric and the seeing in the combined image was 0."5.
We find no evidence of a point source on the field of the galaxy at
the location of the candidate orphan down to a magnitude of about
24.5 in r. We thank Alain Klotz for sending us copies of the
original discovery images, which allowed us to align the Gemini and
discovery images with an accuracy of nearly 0."1.
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