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PTF weekly SN discovery report, April 8, 2011

ATel #3270; A. Gal-Yam, P. Nugent, J. Silverman, S. Hoenig, A. Sonnenfeld, A. Nierenberg, T. Treu, O. Yaron, A. Sternberg, and J. Bloom report on behalf of the Palomar Transient Factory collaboration
on 8 Apr 2011; 22:11 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Avishay Gal-Yam (avishay.gal-yam@weizmann.ac.il)

Subjects: Optical, Supernovae

The PTF (ATEL #1964; http://www.astro.caltech.edu/ptf/ ) reports the discovery of a two new supernovae. PTF11bkd was discovered by autonomous PTF software on March 16, 2011 UT at RA(J2000) = 16:20:34.82 and DEC(J2000) = +21:12:08.3 at a magnitude of 17.3 in R-band (calibrated with respect to the USNOB1 catalog). The SN is seen in previous PTF imaging from March 13, and is not detected in previous images obtained in 2010. A spectrum was obtained using the KAST spectrograph on the 3-m Lick telescope on April 6 UT, revealing the supernova to be of type Ia at z=0.03279, approximately one month after peak. PTF11bmo was discovered by autonomous PTF software on March 17, 2011 UT at RA(J2000) = 14:29:04.98 and DEC(J2000) = +41:54:42.4 at a magnitude of 17.7 in R-band (calibrated with respect to the SDSS catalog). The SN is seen in previous PTF imaging from March 14, and is not detected in previous images obtained in 2010. We note this source was reported as a SN by the CRTS survey (CSS110316:142905+415445) on March 16. A spectrum was obtained using the KAST spectrograph on the 3-m Lick telescope on April 4 UT, revealing the supernova to be of type Ia at z=0.0316, approximately one month after peak.