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ATEL # 2802; I. Arcavi, D. Xu, A. Gal-Yam (Weizmann Institute of Science), M. Sullivan (Oxford), R. M. Quimby, M. M. Kasliwal, E. O. Ofek, S. R. Kulkarni (Caltech), P. Nugent (LBNL), J. Bloom (UCB), N. M. Law (U. Toronto), R. G. Dekany, G. Rahmer, David Hale, R. Smith, J. Zolkower, V. Velur, R. Walters, J. Henning, K. Bui, D. McKenna (Caltech), and J. Jacobsen (LBNL) on behalf of the Core-Collapse working group of the Palomar Transient Factory (ATEL#1964)
on 18 Aug 2010; 12:06 UT
Distributed as an Instant Email Notice (Supernova)
Password Certification: Avishay Gal-Yam (firstname.lastname@example.org)
Subjects: Optical, Nova, Supernova
The PTF (ATEL #1964; http://www.astro.caltech.edu/ptf/) reports the discovery of three new supernovae: PTF10pjg, PTF10rin and PTF10raj. PTF10pjg was discovered on 2010 July 11 UT at RA(J2000) = 23:23:08.01 and DEC(J2000) = +13:02:39.2 at a magnitude of 19.3 in R-band (all mags calibrated with respect to the USNO catalog) in the galaxy III Zw 104 (z=0.042636). The supernova was not detected down to mag 21.1 in PTF images taken on 2010 July 6 (3-sigma). PTF10rin was discovered on 2010 August 10 UT at RA(J2000) = 22:52:38.95 and DEC(J2000) = +13:00:36.6 at a magnitude of 19.4 in R-band in the galaxy 2MFGC 17196 (z=0.031666). PTF10raj was discovered on 2010 August 8 UT at RA(J2000) = 02:43:24.13 and DEC(J2000) = +03:06:17.6 at a magnitude of 18.2 in R-band in the galaxy IC 1836 (z=0.022616). Spectra were obtained using the Double-Beam Spectrograph (DBSP; Oke \& Gunn 1982, PASP, 94, 586) on the Palomar 5-m Hale telescope on 2010 August 14 UT, revealing the three supernovae to be of type II. The superfit program (Howell et al. 2005, ApJ 634, 1190) finds good matches for all three supernovae to the type II supernova 1999em at 36 days post-peak.