[vsnet-grb-info 4438] GRB 070318: absorption-line redshift

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  6216
SUBJECT: GRB 070318: absorption-line redshift
DATE:    07/03/19 07:28:15 GMT
FROM:    Andreas O. Jaunsen at ITA/U Oslo  <ajaunsen at astro.uio.no>

A.O. Jaunsen (Univ. Oslo), J.P.U. Fynbo (DARK/NBI), M.I. Andersen  
(AIP) and P. Vreeswijk (ESO) report on behalf of a larger collaboration.

We observed the field of GRB 070318 (Cummings et al., GCN 6210, La  
Parola et al, GCN 6214 and Page et al. GCN 6215) with the ESO/VLT UT2  
equipped with FORS1. Observations started on 2007 Mar 19.008 UT and  
an 1800-s spectra was acquired with the 300V grism covering a  
wavelength range of 3500-8500A.

We identify several emission lines from MgII, MI, FeII, MnII of which  
the MgII doublet 2796,2804 is the most prominent at a redshift of  
z=0.836.

We thank the excellent support from the ESO/Paranal staff.