[AAVSO-HEN] GRB 071112C: VLT redshift

[grb at aavso.org]

The following is a GCN Circular circulated via the AAVSO network.
For an archive and more information on circulars visit:
http://lheawww.gsfc.nasa.gov/docs/gamcosray/legr/bacodine/gcn3_archive.html

TITLE:   GCN CIRCULAR
NUMBER:  7076
SUBJECT: GRB 071112C: VLT redshift
DATE:    07/11/13 05:40:58 GMT
FROM:    Pall Jakobsson at U Hertfordshire  <P.Jakobsson at herts.ac.uk>

Pall Jakobsson (U. Hertfordshire), Johan P. U. Fynbo,
Paul M. Vreeswijk, Daniele Malesani (DARK, NBI) and
Jesper Sollerman (DARK, NBI;  U. Stockholm) report
on behalf of a larger collaboration:

Using FORS2 on the Very Large Telescope, we have obtained 
2*30 min spectra (grism 300V) of the optical afterglow 
of GRB 071112C (Perri et al., GCN 7059).

The spectrum displays numerous Fe II lines and the Mg II 
doublet (2796,2803) in absorption corresponding to a redshift 
of z = 0.823 (based on a preliminary wavelength calibration).
At this redshift we also find emission lines corresponding
to [O II] 3728 and [O III] 5008.

We thank the Paranal staff for excellent support, especially
Stephane Brillant and Linda Schmidtobreick.