Spectroscopic Classification of ASASSN-15mf as a Type Ia supernova near maximum
ATel #7781; A. S. Piascik, I. A. Steele (Liverpool JMU)
on 10 Jul 2015; 10:18 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-15mf at
2015-07-09T:21:52:05 UT. This transient was reported in ATel #7775 by the All Sky Automated
Survey for SuperNovae with a discovery timestamp 2015-07-07.32 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. We find a close match with SN2000cp
at -1 day before maximum and a red-shift, z=0.026 which is consistent with
that of the proposed host galaxy, UGC 09108 NED02.
We estimate an expansion velocity of 11,000 km/s derived from the Si-II
(635.5nm) absorption feature.
Liverpool Telescope
