Spectroscopic Classification of PSN J17520838+1314252 as a Type Ia Supernova near maximum light
ATel #7794; A. S. Piascik (Liverpool JMU), J. Skvarc, S. Maticic, J. Zakrajsek, B. Dintinjana (Crni Vrh Observatory), G. Masi, P. Catalano (Virtual Telescope Project, Ceccano, Italy), I. A. Steele (Liverpool JMU)
on 13 Jul 2015; 18:10 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Iain Steele (iainsteele@mac.com)
Subjects: Optical, Supernovae
PSN J17520838+1314252 was discovered by S. Maticic from Crni Vrh Observatory at 2015-07-06.976 UT and reported on TOCP. It was confirmed on 2015-07-07.88688 by G. Masi and P. Catalano (Virtual Telescope Project). Another follow-up observation was made by J. Zakrajsek (Crni Vrh Observatory) at 2015-07-07.9028 UT.
Spectroscopic observations of PSN J17520838+1314252 were conducted on 2015-07-10T22:21:26 UT. A spectrum was obtained in the visible, 400-800nm, with resolution R~350, using the SPRAT spectrograph on the Liverpool Telescope located at Roque de los Muchachos on La Palma.
Classification using SNID (Blondin and Tonry 2007, ApJ, 666, 1024) indicates it is a type Ia supernova with a redshift of z=0.033, consistent with that of the closest galaxy 2MASX J17520913+1314038, z=0.0332. We find a close match with SN2007bd at -1 day before maximum.
We estimate an expansion velocity from the Si-II (635.5nm) absorption feature of 11,800 km/s.
Liverpool Telescope
