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Confirmation of Supernovae from CRTS

ATel #5837; 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 31 Jan 2014; 03:55 UT
Credential Certification: Andrew J. Drake (ajd@cacr.caltech.edu)

Subjects: Optical, Supernovae, Transient

Referred to by ATel #: 6199

Further to ATel#5659, here we report the spectroscopic classification of nine CRTS supernova candidates using Palomar 5m+DBSP on 2014 Jan 23 UT.
Classifications of were performed via SN spectrum cross correlation using SNIDs (Blondin & Tonry, 2007, ApJ, 666, 1024).

   CRTS Detection ID      Type        z    Phase     Match       Note 
CSS140123:111719+361025   Ia         0.08    +2      2003du 
CSS140123:104818+204751   Ia-91T     0.09    -1      1999aa 
CSS140123:093027+411345   Ia         0.12    +2      2003du 
CSS140109:095728+274221   Ia         0.09   +11      2003du 
CSS140109:100201+404034   Ia         0.14   +13      1998bu 
CSS140102:124548+323108   IIP        0.03   >30      2004et 
CSS140102:133358+240714   II         0.13                         (a) 
CSS131226:113049+263830   IIP        0.05   +25      2004et 
CSS131224:023218+212428   IIP        0.03   +35      2004et 
(a) Noisy spectrum. 
Due to the real-time analysis of all CRTS transients, CSS140123:111719+361025, CSS140123:104818+204751 and CSS140123:093027+411345 were all confirmed within 1.5 hours of their discovery observations. Early stage spectroscopic observations were also obtained for SN 2014J and MLS140121:071559+214845. The results are in agreement with Fossey et al. (2014, CBET#3792) and Ergon et al. (2014, ATel#5834), respectively.

Links to all CRTS transients can be found at http://crts.caltech.edu/.