GCN Circular 7860
Subject
GRB 080603A: optical observations
Event
Date
2008-06-07T22:52:28Z (18 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
V. Rumyantsev (CrAO), A. Pozanenko (IKI) report on behalf of larger GRB
follow-up collaboration:
We observed a field of INTEGRAL GRB 080603A (Paizis et al., GCN 7790) in
R-band on June 06 between (UT) 22:32 - 23:55 with Zeiss-1000 (Simeiz)
telescope of CrAO observatory. Extended object is found ~1" south from the
position of optical afterglow (Gomboc et al., GCN 7788; Chornock et al.,
GCN 7789), and the position of the extended object is consistent with
coordinates reported by Kuin et al. (GCN 7804). Therefore, we suggest it as
a host galaxy of 080603A.
Based on USNOB1.0 star with ID 1527-0313986 at RA = 18:37:55.186, Dec.
+62:45:32.28 (R1 = 16.74) we estimated brightness of the extended object:
UT, Exposure, R_mag, UL
(mid time)
3.496 41x120 21.90 +/- 0.17 22.85
If the extended source is the host galaxy then contamination by the host can
explain slow decay of light curve noted by Kann et al. (GCN 7822).
A combined image can be found at
http://grb.rssi.ru/GRB080603A/GRB080603A_2080606.gif
The message may be cited.