GCN Circular 5075
Subject
GRB 060428B: spectroscopy
Date
2006-05-05T17:00:58Z (19 years ago)
From
Daniele Malesani at SISSA-ISAS,Trieste,Italy <malesani@sissa.it>
D. Fugazza (INAF/OABr), D. Malesani (SISSA), G. Chincarini (Univ.
Milano-Bicocca & INAF/OABr), S. Covino, P. Romano, G. Tagliaferri
(INAF/OABr), M. Della Valle (INAF/OAA), N. Masetti (INAF/IASF Bo), G.
Andreuzzi, N. Pinilla Alonso (INAF/TNG), report on behalf of a larger
collaboration:
We observed the field of GRB 060428B (Campana et al., GCN 5017; Troja et
al., GCN 5031), possibly an X-ray flash (Sakamoto et al., GCN 5029). We
undertook spectroscopy of the object 3" close to the optical afterglow
(Price et al., GCN 5019; Li et al., GCN 5027; Halpern & Mirabal, GCN
5034), considering it as a potential host galaxy. Low-resolution
spectroscopy (~15 A FWHM) was obtained with TNG+DOLoRes, starting on
2005 May 3.89273, for a total exposure time of 1 hr.
Inspection of the spectrum reveals a smooth, very red continuum. No
prominent features were detected either in emission or in absorption. We
thus consider unlikely that this object is the host galaxy of GRB 060428B.
A plot of the spectrum can be found at the following URL:
http://www.sissa.it/~malesani/GRB/060428B/spectrum.gif
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