[vsnet-grb-info 7325] GRB 090205: VLT refined redshift

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  8892
SUBJECT: GRB 090205: VLT refined redshift 
DATE:    09/02/06 16:23:14 GMT
FROM:    Paolo D'Avanzo at INAF-OAB  <paolo.davanzo at 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).