GCN Circular 4354
Subject
GRB 051215: near-infrared observations
Date
2005-12-15T03:45:40Z (19 years ago)
From
Daniele Malesani at SISSA-ISAS,Trieste,Italy <malesani@sissa.it>
S. Covino (INAF/OABr), S. Piranomonte (INAF/OAR), D. Malesani (SISSA),
L.A Antonelli (INAF/OAR), W. Boschin and G. Mainella (INAF/TNG), report
on behalf of a larger collaboration:
We observed the field of the possible GRB 051215 (Holland et al, GCN
4352), using the 3.6m telescope TNG equipped with the NICS instrument.
Observations were carried out under moderate seeing conditions (~1.5"),
and started 1.3 hr after the GRB trigger. The total exposure times was
10 min in J (mean time: Dec 15.087 UT) and 10 min in Ks (mean time: Dec
15.099 UT). The field of view encompasses about 80% of the BAT circle
(3' error circle).
We looked in our J-band images for objects not present in the SDSS
catalog provided by Cool et al. (GCN 4353). The following two objects
are not present in the SDSS catalog and have a brightness comparable to
objects listed in the catalog:
1: alpha = 10:52:36.211, delta = +38:37:47.55 (J2000);
2: alpha = 10:52:40.123, delta = +38:37:08.67 (J2000).
Of course, color effects may be responsible for the lack of counterparts
in the SDSS.
Further observations are planned to look for variability.
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