GCN Circular 16409
Subject
GRB 140614B: MOSFIRE Ks-band nondetection
Event
Date
2014-06-15T15:25:35Z (12 years ago)
From
Daniel Perley at Caltech <dperley@astro.caltech.edu>
D. A. Perley (Caltech) reports:
I imaged the field of GRB 140614B (Page et al., GCN 16394) using MOSFIRE
on the Keck I 10m telescope in the Ks-band filter. A sequence of 12
36-second images was obtained at a midtime of 13:18 UT on 2014-06-15
(1.27 days after the Swift trigger).
No sources are detected within the XRT error circle (Evans et al, GCN
16395) to a limiting mag of approximately Ks > 21.9 mag (3-sigma,
calibrating relative to 2MASS.)
A faint source (Ks = 21.5 +/- 0.2 mag) is detected outside the XRT error
circle, at a position of RA = 21:30:31.364, dec = +14:55:48.79 (J2000).