Classification of Supernova in M82 as a young, reddened Type Ia Supernova
ATel #5786; Y. Cao (Caltech), M. M. Kasliwal (Carnegie/Princeton), A. McKay (UT Austin), A. Bradley (APO) report on behalf of the intermediate Palomar Transient Factory Collaboration
on 22 Jan 2014; 08:47 UT
Credential Certification: Yi Cao (firstname.lastname@example.org)
Subjects: Optical, Supernovae
Referred to by ATel #: 5789, 5791, 5793, 5794, 5795, 5797, 5798, 5799, 5800, 5804, 5808, 5809, 5811, 5812, 5824, 5835, 5840, 5876
At UT 2014 Jan 22.305, we obtained a spectrum of PSN_J09554214+6940260 (discoverer: S. J. Fossey) with the Dual Imaging Spectrograph
on the ARC 3.5m telescope. We classify this as a Type Ia supernova with a Si II velocity of 20000 km/s. The best superfit match is
SN2002bo at -14d. The supernova has a red continuum and deep Na D absorption.
We further note that at UT 2014 Jan 21.158, the supernova is visible in Palomar 48-inch images but it
is too saturated to measure a magnitude. iPTF upper limits (R=20.4 mag) are prior to Jan 13.
Panchromatic follow-up is encouraged.