Seven type-Ia Supernovae from CRTS

ATel #5054; A. J. Drake, S. G. Djorgovski, A. A. Mahabal, M. J. Graham, R. Williams (Caltech); J. L. Prieto (Princeton); M. Catelan (PUC Chile); E. Christensen, S. M. Larson (LPL/UA)
on 7 May 2013; 22:45 UT
Credential Certification: Andrew J. Drake (ajd@cacr.caltech.edu)

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Further to ATel#4985, here we report the classification of CRTS supernova candidates using Palomar 5m+DBSP on 2013 May 5 UT. Classifications were performed via SN spectrum cross correlation using SNIDs (Blondin & Tonry, 2007, ApJ, 666, 1024).

 
   CRTS Detection ID      Type      z     Phase    Spec Match 
------------------------------------------------------------- 
MLS130504:130010-033904    Ia      0.09     +2       2003du 
MLS130504:114458+092019    Ia      0.10    +14       1995D 
CSS130503:130650+153433    Ia      0.07     -1       2002er 
CSS130502:102512+302715    Ia-pec  0.06     +7       2006gz 
CSS130502:115738+333229    Ia      0.08     +4       2003du 
CSS130429:140715+090322    Ia      0.13    +11       2003du 
CSS130419:125840+654716    Ia      0.08    +17       1994D 
 
 
Notes: 
CSS130419:125840+654716 is 20" from the nearest SDSS source. The SN's redshift matches that  
of galaxy SDSS J125850.27+654813.3 and the phot-z for moderately bright (r=15.5) galaxy  
2MASX J12584822+6548122. However, based on the offsets to these galaxies (~75") and their  
redshift, the SN is at a projected distance of ~130kpc. This suggests that the SN is most 
likely associated with an unseen dwarf galaxy. MLS130504:114458+092019 also has no matching  
SDSS sources within ~20". 

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