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Asiago classification of ASASSN-15fa

ATel #7253; L. Tomasella, S. Benetti, E. Cappellaro, N. Elias-Rosa, P. Ochner, A. Pastorello, L. Tartaglia, G. Terreran, M. Turatto (INAF OAPd)
on 19 Mar 2015; 09:33 UT
Credential Certification: Lina Tomasella (lina.tomasella@oapd.inaf.it)

Subjects: Optical, Supernovae

The Asiago Transient Classification Program (Tomasella et al. 2014, AN, 335, 841) reports the spectroscopic observation of the following transient. The observations were performed with the Asiago 1.82 m Copernico Telescope (+AFOSC; range 340-820 nm; resolution 1.4 nm).

Name         | Date (UT)    |  z       | Type  | Phase              |  Notes 
ASASSN-15fa  | 20150319.12  | 0.02741  | Ia    |few days before max |    1 

(1) The target was discovered by the All Sky Automated Survey for SuperNovae and reported in Atel #7245. The spectrum matches those of the 91T-like supernova, SN 1998es (Matheson et al. 2008, AJ, 135, 1598) few days before maximum light. The expansion velocity of the ejected material, as inferred from the position of the absorption of the Si II 635.5 nm line, is about 11500 km/s.

Classifications 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.