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Spectroscopic Classification of 4 Supernova

ATel #8410; P. Challis, S. Johnson, R. Kirshner, E. Falco, P. Berlind (Harvard-Smithsonian Center for Astrophysics), J. L. Prieto (Diego Portales; MAS), K. Z. Stanek (Ohio State)
on 14 Dec 2015; 21:03 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Peter Challis (pchallis@cfa.harvard.edu)

Subjects: Optical, Supernovae

Referred to by ATel #: 8421

pectra (range 350-760 nm) of supernova ASASSN15-tz (ATEL 8404), PSN J23244903+1516520, CBAT TOCP, ASASSN15-tx (ATEL 8400), and ASASSN15-ua (ATEL 8408) were obtained on December 14, 2015 UT with the F. L. Whipple Observatory 1.5-m telescope (+ FAST). Cross-correlation with a library of supernova spectra using the "Supernova Identification" code (SNID; Blondin and Tonry 2007, Ap.J. 666, 1024) indicates the following Identifications: PSNJ23244903 23:24:49.03 +15:16:52.0 type IIn sn1998S -13 days ; ASASSN15-tx 02:30:24.44 +45:07:18.2 type IIn or II with blue continuum ; ASASSN15-tz 02:41:08.86 +43:40:48.8 type Ia about -8 days before max ; ASASSN15-ua 13:34:54.47 +10:59:04.6 type IIn, balmer series in emission, phase uncertain.