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Spectroscopic Classification of PSN J07051005+2102327: a Type Ia Supernova

ATel #8295; I. Shivvers, H. Yuk, A. V. Filippenko (University of California, Berkeley), V. U (University of California, Riverside)
on 18 Nov 2015; 07:31 UT
Credential Certification: Isaac Shivvers (ishivvers@berkeley.edu)

Subjects: Optical, Supernovae, Transient

We report that inspection of a low signal-to-noise ratio CCD spectrum (range 350-1050 nm) of PSN J07051005+2102327 (CBAT TOCP), obtained on Nov. 17.46 UT with the Shane 3-m reflector (+ Kast spectrograph) at Lick Observatory, shows that the object is a normal Type Ia supernova within a few days of maximum brightness. Cross-correlation with a library of supernova spectra using the "SuperNova Identification" code (SNID; Blondin and Tonry 2007, Ap.J. 666, 1024) indicates a strong similarity to the spectra of Type Ia SNe 1989B and 1992A within 4 days of peak. The redshift derived from SNID is about 0.08 (the redshift of the host galaxy, 2MASX J07051014+2102233, is not available through NED). Adopting this redshift, the rest-frame photospheric velocity estimated from the minimum of the Si II 635.5-nm feature is ~11,500 km/s.