Supernova 2012ce = Psn J11134946-2955320
No Thumbnail Available
Date
2012
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Report the discovery of an apparent supernova in unfiltered Siding Spring Survey (SSS) images: SN 2012 UT R.A. (2000.0) Decl. Mag. Offset 2012ce May 14.49 11 13 49.46 -29 55 32.0 16.6 7".0 E, 2".2 S The variable was designated PSN J11134946-2955320 when it was posted at the Central Bureau's TOCP webpage and is here designated SN 2012ce based on the spectroscopic confirmation reported below. Further CCD magnitudes for 2012ce: Mar. 31.63 UT, [18.8 (SSS); May 15.398, 18.5 (J. Brimacombe, Cairns, Australia; infrared filter; position end figures 49s.51, 32".9; image posted at website URL http://www.flickr.com/photos/43846774@N02/7207002078/). G. H. Marion, Harvard-Smithsonian Center for Astrophysics (CfA), on behalf of the CfA Supernova Group, reports that a spectrum (range 340-740 nm) of PSN J11134946-2955320 = 2012ce was obtained on May 15 UT by J. Irwin with the F. L. Whipple Observatory 1.5-m telescope (+ FAST). Cross-correlation with a library of supernova spectra using the "Supernova Identification" code (SNID; Blondin and Tonry 2007, Ap.J. 666, 1024) shows that 2012ce is a type-Ia supernova about one week after maximum light. A good fit is found to the template of the normal type-Ia supernova 1995D at +6 days.