[vsnet-grb-info 12649] GRB 121128A - Gemini North redshift

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  14009
SUBJECT: GRB 121128A - Gemini North redshift
DATE:    12/11/28 07:46:48 GMT
FROM:    Nial Tanvir at U.Leicester  <nrt3 at star.le.ac.uk>

N. R. Tanvir (U. Leicester), A. J. Levan (U. Warwick), T.  Matulonis (Gemini)
report on behalf of a larger collaboration:

We observed the counterpart of GRB 121128A (Oates et al. GCN 14007;
Japelj et al. GCN 14008) with the GMOS-N spectrograph at Gemini-North,
beginning at Nov 28 2012 06:06 UT, approximately 1hr post-burst.
The afterglow is well detected and our provisional reduction shows a
series of absorption lines of AlII, FeII, CIV, SiII, SiIV with a common 
redshift of z=2.20.