Spectroscopic Classification of ASASSN-15fs
ATel #7306; E. Falco, M. Calkins, P. Challis, R. Kirshner (Harvard-Smithsonian CfA), J. L. Prieto (UDP; MAS), K. Z. Stanek (OSU)
on 28 Mar 2015; 16:49 UT
Credential Certification: Jose L. Prieto (jose.prietok@mail.udp.cl)
Subjects: Optical, Supernovae, Transient
We obtained an optical spectrum (range 350-760 nm) of ASASSN-15fs (ATel #7296) on UT Mar 27.5 with the F. L. Whipple Observatory 1.5-m telescope (+ FAST). The spectrum is that of a Type Ia. Cross-correlation with a library of SN spectra using SNID (Blondin and Tonry 2007, Ap.J. 666, 1024) shows that ASASSN-15fs is a young, normal Type Ia SN at -5 days. After correcting the spectrum for the redshift of its host galaxy (z=0.02902) we measure a Si II 635.5nm expansion velocity of -11000 km/s.
