GCN Circular 5145
Subject
GRB 060512: TNG optical spectroscopy
Date
2006-05-16T16:48:31Z (18 years ago)
From
Daniele Malesani at SISSA-ISAS,Trieste,Italy <malesani@sissa.it>
S. Piranomonte (INAF/OARm), E. Maiorano (INAF/IASF Bo), V. D'Elia
(INAF/OARm), N. Masetti (INAF/IASF Bo), F. Fiore (INAF/OARm), D.
Malesani (SISSA/ISAS), G. Mainella, A. Magazzu' (INAF/TNG), report on
behalf of a larger collaboration:
We observed the optical transient of GRB 060512 (Cummings et al. GCN
5117; Mundell et al., GCN 5119) with the 3.6m TNG telescope located in
the Canary Islands. Two mid-resolution spectra (~10 A FWHM) were
obtained with TNG+DOLoRes, starting on 2006 May 13.0423 UT, for a total
exposure time of 40 minutes. The spectra cover the range 4000-8000 A.
Inspection of the spectrum does not reveal any obvious absorption
system. We find no signs of the continuum break around 4800 A reported
by Starling et al. (GCN 5131). Our spectrum shows a continuum extending
blueward down to ~4000 A (the limit of our grism), suggesting z < 2.3.
We thank the observing staff at TNG.
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