Asiago classification of ASASSN-15gt as a Type-Ia SN
ATel #8350; S. Benetti, L. Tomasella, E. Cappellaro, N. Elias-Rosa, P. Ochner, A. Pastorello, L. Tartaglia, G. Terreran, M. Turatto (INAF Osservatorio Astronomico di Padova), Milan, M. (Padua University)
on 1 Dec 2015; 20:06 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Enrico Cappellaro (email@example.com)
Referred to by ATel #: 8354
The Asiago Transient Classification Program (Tomasella et al. 2014, AN, 335, 841) reports the spectroscopic classification of ASASSN-15gt in GALEXASC J002041.66+251341.1 (ATEL #8347).
The observation was performed with the Asiago 1.82 m Copernico Telescope (+AFOSC; range 340-820 nm; resolution 1.4 nm).
Name | Discovery UT | Obs. Date UT | z | Type | Phase |Notes
ASASS -15gt | 20151130.21 | 20151201.73 |0.03561 | Ia | pre-max | (1)
(1) Best match with 1991T-like Type-Ia SNe, around 1 week before B-band maximum light.
The expansion velocity, as deduced from the position of the minimum of the Si II 635 nm line, is about 11000 km/s.
Classification were done with GELATO (Harutyunyan et al. 2008, A&A, 488,
383) and SNID (Blondin and Tonry 2007, ApJ, 666, 1024). The Asiago classification
spectra are posted at the website http://sngroup.oapd.inaf.it.