Spectroscopic Classification of ASASSN-15fj
ATel #7287; E. Falco, M. Calkins, P. Challis, R. Kirshner (Harvard-Smithsonian CfA), J. L. Prieto (UDP; MAS), K. Z. Stanek (OSU)
on 25 Mar 2015; 12:14 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-15fj (ATel #7257) on UT Mar 24.48 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-15fj is a normal Type Ia SN at +8 days after maximum light. The redshift obtained by SNID from the SN features is z=0.045 +/- 0.003, and after correcting the spectrum for this redshift we measure a Si II 635.5nm expansion velocity of -10600 km/s.
