GCN Circular 7544
Subject
GRB 080330: NOT redshift
Date
2008-03-30T07:19:56Z (16 years ago)
From
Daniele Malesani at Niels Bohr Inst,Dark Cosmology Center <malesani@astro.ku.dk>
Daniele Malesani, Johan P.U. Fynbo (DARK), Pall Jakobsson (Univ.
Hertfordshire), Paul M. Vreeswijk (DARK), Sami-Matias Niemi (NOT),
report on behalf of a larger observation:
We observed the afterglow of GRB 080330 (Mao et al., GCN 7537) with the
NOT equipped with ALFOSC. We clealy detect the optical counterpart
(Klotz et al., GCN 7536; Mao et al., GCN 7537, Schaefer & Guver, GCN
7538; Gomboc et al., GCN 7539; Bloom & Starr, GCN 7542). We measure R =
17.55 on March 30.17596 UT (32.1 min after the GRB), assuming R = 17.61
for the USNO star 1206-0188558 at RA = 11:16:57.541, Dec = +30:37:51.51.
A 1800 s spectrum with ALFOSC was acquired starting 46 min after the
GRB, covering the range 3700-8000 AA. A preliminary reduction of the
data reveals absorption features in the spectrum from C IV, Zn II, Fe
II, and Mg II at redshift z=1.51.
We acknowledge excellent support from the NOT staff