Spectral Classification of ASASSN-15ss as a Type Ia supernova
ATel #8279; A. S. Piascik, I. A. Steele (Liverpool JMU)
on 12 Nov 2015; 08:44 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Iain Steele (iainsteele@mac.com)
Subjects: Optical, Supernovae
We conducted a spectroscopic observation of transient ASASSN-15ss at
2015-11-12T01:47:53.952 UT. This transient was reported by the All Sky Automated Survey for
SuperNovae (ASAS-SN) in ATel #8273.
A spectrum was obtain in the visible, 400-800nm, with resolution R ~350,
using the SPRAT spectrograph on the Liverpool Telescope located at Roque
de los Muchachos.
Classification using SNID (Blondin and Tonry 2007, ApJ, 666, 1024)
indicates it is a type Ia supernova.
We find a close match with SN2007F at -1 day pre-maximum.
The SNID estimated red shift is z = 0.037, consistent with that of the
proposed host galaxy MCG -02-16-004, z = 0.036.
The ejecta velocity estimated from the Si II absorption feature at 635.5
nm is ~10,700 km/s.
Liverpool Telescope
