[vsnet-grb-info 14316] GRB 131229A: Deep Gemini-South Imaging

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  15630
SUBJECT: GRB 131229A: Deep Gemini-South Imaging
DATE:    13/12/29 10:22:22 GMT
FROM:    Daniel Perley at Caltech  <dperley at astro.caltech.edu>

D. A. Perley (Caltech), A. Cucchiara (NASA/GSFC), and N. R. Tanvir (U.
Leicester) report:

We imaged the position of GRB 131229A (Page et al., GCN 15627) using 
GMOS-S on the Gemini-South 8m telescope in i- an z-bands starting at 
07:33:07.5 UT (54 minutes after the GRB).  A total of 6 x 180s of 
imaging was acquired in each filter.

Sources detected in the reduced stack inside or close to the (onboard,
5" radius) XRT error circle (with J2000 positions) include:

A (05:40:55.85, -04:23:40.6), a point source north of the error circle
B (05:40:55.70, -04:23:43.4), an extended source
C (05:40:55.92, -04:23:45.9), a faint, marginally detected source

No statement about variability or association with the GRB can be made
at this time.  All of these sources are fainter than the P60 and USNO
limits.

An image of the field is posted to:
http://www.astro.caltech.edu/~dperley/gcn/131229a/131229a_gmos.png