PTF discovery of PTF10myz, a type II supernova

ATel #2757; S. Ben-Ami, O. Yaron, S. Lazarevic, Y. Green, A. Gal-Yam, I. Arcavi (Weizmann Institute of Science), E. O. Ofek, R. M. Quimby, M. M. Kasliwal, S. R. Kulkarni (Caltech), D. A. Howell ( LCOGT/UCSB), 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 25 Jul 2010; 12:37 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Avishay Gal-Yam (avishay.gal-yam@weizmann.ac.il)

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The PTF (ATEL #1964; http://www.astro.caltech.edu/ptf ) reports the discovery of a new supernova, PTF10myz. The supernova was discovered on July 1 UT at RA(J2000) = 14:58:13.71 and DEC(J2000) = +48:11:28.2 at a magnitude of 19.2 in R-band (calibrated with respect to the USNO catalog) in the galaxy KUG 1456+483 (z=0.0282). The supernova was not detected down to mag 21.5 in previous PTF images taken during 2009/2010 (3-sigma). A spectrum was obtained using the GMOS Spectrograph (Hook et al. 2004, PASP, 116, 425) on the Gemini North 8-m telescope on July 2 UT, revealing the supernova to be of type II with a blue absorptionless continuum. A follow-up spectrum was obtained using the Double-Beam Spectrograph (DBSP; Oke & Gunn 1982, PASP, 94, 586) on the Palomar 5-m Hale telescope on July 19 UT, revealing the supernova to be of type II without hints of He. The superfit program (Howell et al. 2005, ApJ 634, 1190) finds a good match to the type II-P SN 1993W at 4 days post-peak.