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GCN Circular 7444

VLT/UVES redshift of GRB 080319B
2008-03-19T13:34:33Z (16 years ago)
Paul Vreeswijk at Dark Cosmology Centre,U.of Copenhagen <>
P.M. Vreeswijk (DARK), A. Smette (ESO), D. Malesani, J.P.U. Fynbo, Bo
Milvang-Jensen (DARK), P. Jakobsson (U. Hertfordshire), A.O. Jaunsen
(U. Oslo) and C. Ledoux (ESO) report on behalf of a larger

We observed the optical afterglow of GRB 080319B (Racusin et al., GCN
7427) with the Ultraviolet and Visual Echelle Spectrograph (UVES)
mounted at ESO's VLT Kueyen. Observations were performed in
rapid-response mode starting on 2008 March 19 at 07:18 UT.

The highest redshift system that we identify based on the MgII doublet
and various other features has z=0.937, the presumed redshift of GRB
080319B. Another system is identified at z=0.530.

We acknowledge excellent support from the observing staff at Paranal,
in particular Swetlana Hubrig and Elena Mason.
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