GCN Circular 4900
Subject
GRB060218/SN2006aj: optical observations
Event
Date
2006-03-22T00:45:36Z (20 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
D. Sharapov (MAO, and NOT, La Palma), A. Pozanenko (IKI), and M. Ibrahimov
(MAO) on behalf of larger GRB follow up collaboration report:
We have observed GRB060218/SN 2006aj (Cusumano et al. GCN 4775) with
Maidanak 1.5m telescope in BVR on Feb.27, Mar.08, and in BR bands with
NOT/StanCam on Mar.15. The following photometry is based on Modjaz, et. al.
(2006, astro-ph/0603377) calibration and the same reference stars in each
epochs:
Mid time (UT), B, V, R
Feb.27.63 18.08 (.01) 17.40 (.01) 17.21 (.01)
Mar.08.66 18.98 (.02) 17.83 (.02) 17.39 (.01)
Mar.15.86 19.66 (.03) - 17.84 (.02)
Only measurement errors are presented. The photometry is preliminary,
reduction and observations are continuing. Our observations confirm a
maximum of the light curve (Modjaz, et. al. 2006, astro-ph/0603377) between
Feb.27 and Mar.08. It is also evident gradual reddening of the SN.
The message may be cited.