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MDM classification of CRTS supernova discoveries

ATEL # 2388; J.L. Prieto (Carnegie Observatories); R. Khan (Ohio State University); A.J. Drake, S.G. Djorgovski, A.A. Mahabal, M.J. Graham, R. Williams (Caltech); M. Catelan (PUC); E. Christensen (Gemini Observatory); E.C. Beshore, S.M. Larson, (LPL/UA)
on 18 Jan 2010; 17:21 UT
Password Certification: Jose Prieto (prieto@astronomy.ohio-state.edu)

Subjects: Optical, Nova, Supernova, Transients

We report the spectroscopic classification of SNe discovered by the Catalina Real-time Transient Survey (CRTS) between 2009-10-15 and 2010-01-13. Optical spectra (range 3900-7500 Angstroms; FWHM resolution 14 Angstroms) were obtained with the Boller & Chivens CCD Spectrograph on the 2.4-m Hiltner telescope at MDM Observatory between Jan. 8-15, 2010. The classes and redshifts were obtained after comparing the spectra with a library of SNe spectra using SNID (Blondin & Tonry 2007, ApJ, 666, 1024). CSS100108:120247+022406 was also classified as a type-II by Kleiser et al. (priv. communication).

IDDisc. DateRADecDisc. MagTypeRedshift
CSS100113:032138+263650 2010-01-13 03:21:37.6 26:36:50 18.8 IIn 0.06
CSS100112:022329+053531 2010-01-12 02:23:28.8 05:35:31 18.5 Ia 0.07
CSS100108:120247+022406 2010-01-08 12:02:46.9 02:24:06 16.4 II 0.02
CSS100108:101213-014900 2010-01-08 10:12:13.3 -01:49:00 18.1 Ia 0.06
CSS091015:021538-032541 2009-10-15 02:15:37.6 -03:25:41 16.9 Ia 0.05
MLS100108:111527+080644 2010-01-08 11:15:26.8 08:06:44 19.7 Ia 0.17

Confirmed SN from ATEL#2359
IDDisc. DateRADecDisc. MagType Redshift
CSS091218:104011+223735 2009-12-18 10:40:10.9 22:37:35 19.4 IIn 0.14
CSS091218:120255+153502 2009-12-18 12:02:55.3 15:35:02 19.1 Ia 0.09
CSS091215:022038+022415 2009-12-15 02:20:37.7 02:24:15 18.7 II 0.04

More information including finding charts and five year lightcurves can be found at http://voeventnet.caltech.edu/feeds/ATEL/CRTS/
Follow-up of unconfirmed SN is requested.

Supernova and highly variable sources are regularly discovered by CRTS and are posted at http://crts.caltech.edu/.


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R. E. Rutledge , Editor
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