GCN Circular 12865
Subject
GRB 120119A: Gemini-S redshift
Event
Date
2012-01-19T06:01:56Z (15 years ago)
From
Antonino Cucchiara at UCSC/UCO Lick <acucchia@ucolick.org>
A. Cucchiara, J. X. Prochaska (UCSC/UCO Lick)
report on behalf of a larger collaboration:
On January 19.20 UT (53 minutes after the BAT trigger)
we observed the optical counterpart of GRB 120119A
(Beardmore et al., GCN 12859) using GMOS-South on the
Gemini-South 8-m telescope.
Spectroscopic observation covering 4000-8000 Angstrom wavelength
range reveals several absorption features, including AlIII1854,
1862, FeII2586,2600, MnII2606, MgII2796,2803 at a common
redshift of 1.728.
Also at least an intervening system is present at z=1.212
based on strong MgII2796 absorption features.
We therefore suggest this to be the redshift of GRB 120119A.
We thank the Gemini staff for performing this observation.