Palomar spectroscopic observations of CRTS optical transients
ATel #6288; A. J. Drake (Caltech); S. Abraham (St. Thomas Col., India); S. G. Djorgovski, M. J. Graham, A. A. Mahabal, R. Williams (Caltech); J. L. Prieto (Princeton); M. Catelan (PUC Chile); E. Christensen, S. M. Larson (LPL/UA)
on 4 Jul 2014; 03:03 UT
Credential Certification: Andrew J. Drake (firstname.lastname@example.org)
Subjects: Optical, Supernovae, Transient
Referred to by ATel #: 7156
Further to ATel#6199, here we report the classification of CRTS optical transients
observed with the Palomar 5m+DBSP on June 30 UT. Spectra were cross-correlated
using SNIDs software (Blondin and Tonry 2007, ApJ, 666, 1024) and the
following results were found:
1, This object exhibits a blue featureless continuum similar to the early spectra of super-luminous
supernovae discovered by CRTS, eg. CSS121015:004244+132827 (Drake et al. 2012, ATel#4498;
Tomasella et al. 2012, ATel#4512; Benetti et al. 2014, MNRAS, 441, 289). The location of the
transient matches a faint red source detected by SDSS with u=23.9, g=23.3, r=21.6, i=20.8, z=20.2.
No match was found with FIRST or NVSS radio data.
2, The spectrum exhibits strong broad and narrow Balmer components.
3, The redshift is based on narrow lines from the host galaxy.
All CRTS transients are discovered within minutes of observation and openly
published to VOEvent network subscribers (such as http://Skyalert.org ).
Links to all CRTS transients can be found at http://crts.caltech.edu/.