GCN Circular 8892
Subject
GRB 090205: VLT refined redshift
Date
2009-02-06T16:23:14Z (15 years ago)
From
Paolo D'Avanzo at INAF-OAB <paolo.davanzo@brera.inaf.it>
D. Fugazza, C. C. Thoene (INAF-OAB), V. D'Elia (INAF-OAR), P. D'Avanzo
(INAF-OAB), S. Piranomonte (INAF-OAR), R. Salvaterra, S. Covino, S.
Campana (INAF-OAB), G. Chincarini (Univ. Bicocca) report, on behalf of
the MISTICI collaboration:
We performed further analysis of our VLT spectrum of the optical
afterglow of GRB 090205 (D'Avanzo et al. GCN 8887; Kruehler & Greiner,
GCN 8888; Thoene et al., GCN 8889).
We clearly detect the following absorption features: Ly_alpha (1215.67),
SiII (1260.66), SiII (1303.27), CII (1334.53), SiIV (1393.76, 1402.77)
doublet, SiII (1526.71) and CIV (1548.20,1550.77) doublet at a redshift
of z = 4.6497 � 0.0025 consistent with previous claims (Kruehler &
Greiner, GCN 8888; Thoene et al., GCN 8889).