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Spectroscopic Classification of PTF10bt/SN2010B

ATEL # 2379; M. M. Kasliwal on behalf of the Palomar Transient Factory Collaboration
on 9 Jan 2010; 15:24 UT
Password Certification: Mansi Manoj Kasliwal (

Subjects: Optical, Nova, Supernova, Transients

As part of a regular spectroscopic follow-up run of candidate transients of the Palomar Transient Factory , we obtained a spectrum of PTF10bt -- also announced earlier today as SN2010B (see CBET#2115, discovery by Masaki Tsuboi). This observation was performed with the Double Beam Spectrograph on the Palomar 200-inch telescope at UT 2010 Jun 9.47. Running Superfit (Howell et al. 2005), we find that the spectrum best matches a Type Ia supernova about six days after maximum light (similar to SN1990N and SN1992A). The first detection by the Palomar 48-inch (as part of the PTF Dynamic cadence survey) was on 2009 Dec 30.576 UT.

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