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Spectroscopic Classification of PSN J11492548-0507138 as a Type Ia Supernova

ATel #7825; R. J. Rudy (Aerospace Corp.), D. R. Ardila (Aerospace Corp.), K. B. Crawford (Aerospace Corp.), M. S. L. Moody (Aerospace Corp. and UC, Berkeley), T. K. Safrit (Aerospace Corp. and MIT), R. C. Puetter (UC, San Diego)
on 22 Jul 2015; 22:25 UT
Credential Certification: Richard Rudy (richard.j.rudy@aero.org)

Subjects: Infra-Red, Optical, Supernovae

Optical and IR spectra from 0.47-2.5 microns (resolution: 5-30 angstroms) of PSN J11492548-0507138 (ATEL #7732) were obtained on 2015 July 12.15 with the Shane 3.0 m Telescope of Lick Observatory using the Aerospace Corporation's Visible and Infrared Imaging Spectrograph (VNIRIS). The spectrum shows the large absorption feature of Si II at 6355 angstroms characteristic of a young type Ia SN. We used the redshift of the host galaxy IC 2693 (0.0056) and the generic classification tool (GELATO) spectrum matching software (Harutyunyan et al., 2008, A&A,488, 383) and found a best fit with a type Ia at or around maximum light.