GCN Circular 19565
Subject
GRB160624A:possible GRB host redshift
Event
Date
2016-06-24T13:38:07Z (10 years ago)
From
Antonino Cucchiara at NASA/GSFC <antonino.cucchiara@nasa.gov>
A. Cucchiara (STScI/GSFC) and A. J. Levan (U. Warwick)
report on behalf of a larger collaboration:
On June 24, 12:12:58 UT (~T+46min after the burst) we observed
the field of the Swift short GRB160624A (D���Ai et al. GCN 19560,
Evans et al. GCN 19562) with the GMOS-N camera mounted on the
Gemini North telescope.
In a 180s r���-band acquisition image a galaxy is identified
within the enhanced XRT error circle. The galaxy is also visible
in SDSS. We performed a 900s spectroscopic observation with the
R400 grating covering the 3800-8100 Angstrom wavelength range.
The galaxy spectrum reveals emission features of [OIII]5007,
H-beta and [OII]3727 at the common redshift of z=0.483.
We also obtained deeper r��� band imaging with the GMOS camera: no
other source is detected in the enhanced error circle down to
a limiting magnitude of r���~25.5, although we are not sensitive to
possible faint point source superposed on the galaxy light.
We thank the Gemini staff for their extremely rapid
response, in particular Andrew Stephens.