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Seven Supernova Candidates from CRTS

ATel #1911; A. J. Drake, A. A. Mahabal, S. G. Djorgovski, M. J. Graham, R. Williams (Caltech); M. Catelan (PUC); E. C. Beshore, S. M. Larson, R. Hill, A. Gibbs, A. Boattini (LPL/UA); E. Christensen (Gemini Observatory);
on 26 Jan 2009; 23:51 UT
Credential Certification: Andrew J. Drake (ajd@cacr.caltech.edu)

Subjects: Optical, Request for Observations, Supernovae, Transient

Referred to by ATel #: 2009

The Catalina Real-time Transient Survey has discovered seven supernova candidates from CSS images and Palomar-60 follow-up between UT dates Dec 20th and Jan 26th. The detections have the following parameters:

CSS090126:093230+174119 2009-01-26 UT 05:24:01 RA 09:32:30.11 Dec 17:41:19.8 Mag 17.7 Type SN
CSS090125:112317+101741 2009-01-25 UT 09:42:38 RA 11:23:16.75 Dec 10:17:41.5 Mag 19.2 Type SN
CSS090120:164659+272759 2009-01-20 UT 13:16:02 RA 16:46:59.41 Dec 27:27:59.7 Mag 18.8 Type SN
CSS090102:115111+244022 2009-01-02 UT 11:10:33 RA 11:51:10.62 Dec 24:40:22.5 Mag 19.1 Type SN
CSS090102:130037+175057 2009-01-02 UT 12:31:17 RA 13:00:37.49 Dec 17:50:57.0 Mag 18.9 Type SN
CSS081229:134527-104353 2008-12-29 UT 13:17:24 RA 13:45:26.56 Dec -10:43:52.8 Mag 17.9 Type SN?
CSS081220:021652+135500 2008-12-20 UT 04:06:34 RA 02:16:52.47 Dec 13:55:00.7 Mag 17.8 Type SN

CSS090126:093230+174119 appears associated with galaxy 2MASX_J09323134+1741326 which has SDSS Gunn   
mags (u=17.9, g=16.3, r=15.7, i=15.4, z=15.2) and spectroscopic redshift z=0.049.  
CSS090125:112317+101741 is associated with an SDSS galaxy with mags (23.9, 22.3, 22.2, 21.9, 21.4).  
CSS090120:164659+272759 is associated with an SDSS galaxy with mags (22.2, 22.0, 21.5, 21.3, 21.0).  
CSS090102:115111+244022 is associated with an SDSS galaxy with mags (22.9, 21.6, 21.3, 21.0, 21.4)  
in a galaxy cluster at z=0.13.  
CSS090102:130037+175057 has no apparent host galaxy in SDSS, PQ, or DSS data.  
CSS081229:134527-104353 has a possible faint source seen in deep CSS coadds but not PQ coadds,   
as well as a possible detection in DSS2-B. This suggests the object might be a CV. However,  
follow-up observations colours were more consistent with young SN-Ia.  
CSS081220:021652+135500 is associated with a faint source seen in SDSS data. Follow-up   
observations exhibited a colour consistent with young SN-Ia.  

We request photometric and spectroscopic follow-up.

For finding charts, discovery images, lightcurves, etc., please see: http://voeventnet.cacr.caltech.edu/feeds/ATEL/CRTS.
Current candidate and confirmed SNe can be found here.