GCN Circular 7165
Subject
Optical Spectroscopy of the Transient in NGC 2770
Date
2008-01-11T15:25:19Z (17 years ago)
From
Alicia Soderberg at Caltech <ams@astro.caltech.edu>
A. Soderberg, E. Berger (Princeton), D. Fox, A. Cucchiara (Penn State), A.
Rau, E. Ofek, M. Kasliwal, and S. B. Cenko (Caltech) report on behalf of a
large collaboration:
"We observed the optical counterpart to the X-ray transient in NGC 2770
(GCNs 7159, 7160) with the Gemini-N/GMOS and Palomar 200-inch/COSMIC
spectrographs beginning at Jan 11.3 UT. The exposure times were 2x600 sec
and 2x900 sec for the Gemini and Palomar data, respectively. A preliminary
analysis of the reduced spectra reveals that the optical counterpart has a
smooth, featureless continuum. We note that there is some suggestion
of a broad bump near 5500 Ang which may indicate the emergence of SN
features.
Further analysis is in progress."