2011ATel.3253....1G

The PTF (ATEL #1964; http://www.astro.caltech.edu/ptf/) reports the discovery of two new supernovae.

PTF11bli was discovered by autonomous PTF software on March 15, 2011 UT RA(J2000) = 14:02:16.18 and DEC(J2000) = +33:39:41.5 at a magnitude of 18.8 in R-band (calibrated with respect to the USNOB1 catalog). The supernova was not detected down to mag 21 in previous PTF images taken during 2010 (3-sigma). A spectrum was obtained using the SNIFS spectrograph on the 2.2-m UH telescope on March. 30 UT, revealing the supernova to be of type Ib/c

PTF11bop was discovered by the Galaxy Zoo Supernova Project (Smith et al. 2011, MNRAS, 412, 1309; http://supernova.galaxyzoo.org) on March 15, 2011 UT

at RA (J2000) = 15:03:02.69 and DEC(J2000) = +31:31:54.5 at a magnitude of 20.0 in g-band (calibrated with respect to the USNOB1 catalog). The supernova was not detected down to mag 21.7 in previous PTF images taken during March 2011 (3-sigma). A spectrum was obtained using the SNIFS spectrograph

on the 2.2-m UH telescope on March. 30 UT, revealing the supernova to be type Ia at z=0.11, approximately 9 days before maximum light.

SNIFS (The SuperNova Integral Field Spectrograph) on the University of

Hawaii 2.2-m telescope is part of the Nearby Supernova Factory II project, scientific collaboration between the Centre de Recherche Astronomique de

Lyon, Institut de Physique Nucl'eaire de Lyon, Laboratoire de Physique

Nucl'eaire et des Hautes Energies, Lawrence Berkeley National Laboratory,

Yale University, Â∼University of Bonn, Max Planck Institute for Astrophysics,

Tsinghua Center for Astrophysics, and the Centre de Physique des Particules

de Marseille.