[vsnet-grb-info 6958] GRB 081121: Magellan Redshift

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  8542
SUBJECT: GRB 081121: Magellan Redshift
DATE:    08/11/22 05:21:25 GMT
FROM:    Edo Berger at Harvard  <eberger at cfa.harvard.edu>

E. Berger (Harvard) and M. Rauch (Carnegie) report:

"We obtained spectroscopic observations of the optical afterglow of GRB
081121 (GCNs 8536,8537) with the LDSS3 spectrograph on the Magellan/Clay
6.5-m telescope starting on 2008 Nov 22.16 UT.  The spectra cover the
wavelength range 3800-6500A.  We detect Ly-alpha absorption, as well as
aborption features corresponding to SiII, CII, SiIV, CIV, FeII, and AlII
at a redshift of z=2.512, which we consider the redshift of the burst.
Further analysis is in progress."