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ATEL # 2852; A.J. Drake, S.G. Djorgovski, A.A. Mahabal, M.J. Graham, R. Williams (Caltech); A. Myers (UIUC); J. Prieto (OCIW); M. Catelan (PUC); E. Christensen (Gemini Observatory); E.C. Beshore, S.M. Larson (LPL/UA); R.H. McNaught (ANU).
on 21 Sep 2010; 19:50 UT
Distributed as an Instant Email Notice (Supernova)
Password Certification: Andrew J. Drake (email@example.com)
Subjects: Optical, Nova, Supernova, Transients
We report the discovery and confirmation of supernovae by the Catalina Real-time Transient Survey (CRTS) in data from the Catalina Sky Survey during the period from 2010-09-01 to 2010-09-18 UT.
SNe confirmed with Palomar 5m between Sep 12th and 14th:
|ID||Disc. Date||RA||Dec||Disc. Mag||Type||Redshift|
|ID||Disc. Date||RA||Dec||Disc. Mag|
Additional notes. SN 2010hs (Cenko et al. 2010, CBET#2454) was discovered in public CSS data taken on Sept 10.35 UT by S. Howerton. A confirming spectrogram was taken Sept 12.29 (4 hours before detection by Cenko et al. 2010). The spectrum best matches type Ia 1996X two days before maximum at redshift z=0.076. SN 2010ht (Drake et al. 2010, CBET#2455) is a type IIP (Prieto et al. 2010, CBET#2455) SN at z=0.024. We obtained a Palomar spectrum that confirms this result. The host galaxy appears to have mag V~22 in archival CFHT megaprime images. This suggests that the host galaxy is extremely faint (Mv~-13). CSS100910:001539+271250 exhibits strong narrow Balmer lines with slight P Cygni profiles and matches the redshift of bright galaxy 2MASX_J00153655+2714265. The large projected distance from 2MASX_J00153655+2714265 (50kpc) and the type IIn nature of the event suggests that the SN may be associated with an unseen dwarf galaxy. A possible low S/N source is seen in blue DSS2 images.More information and finding charts can be found at http://voeventnet.caltech.edu/feeds/ATEL/CRTS/
Follow-up is requested.