Spectroscopy of CSS081009:002151-163204
ATel #1833; J. M. Silverman, B. E. Cobb, R. Chornock, and A. V. Filippenko (University of California, Berkeley)
on 7 Nov 2008; 16:49 UT
Credential Certification: Alexei V. Filippenko (alex@astro.berkeley.edu)
Subjects: Optical, AGN, Supernovae
Inspection of a noisy CCD spectrum (range 340-1000 nm), obtained on Nov. 7 UT
with the 3-m Shane reflector (+ Kast) at Lick Observatory, reveals that
CSS081009:002151-163204 (ATel#1823) has a blue continuum with superposed
narrow emission lines at a redshift of 0.285. We do not detect any broad,
supernova-like features, perhaps because of the relatively low signal-to-noise
ratio. Either this object is an active galactic nucleus, or it is potentially
a very luminous supernova, possibly similar to SN 2008es (Miller et al.,
arXiv:0808.2193; Gezari et al., arXiv:0808.2812).
