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Asiago spectroscopic observation of ASASSN-15mx

ATel #7824; L. Tartaglia, G. Terreran, S. Benetti, E. Cappellaro, N. Elias-Rosa, P. Ochner, A. Pastorello, L. Tomasella, M. Turatto (INAF OAPd)
on 22 Jul 2015; 12:02 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 classification of ASASSN-15mx (ATel #7816) in SDSS J142443.90+260255.4 discovered during the ongoing All Sky Automated Survey for SuperNovae (ASAS-SN). Informations on this transient are also available from the "Bright Supernova" website (http://www.rochesterastronomy.org/snimages/), and The Astronomer's Telegram. The observation was performed with the Asiago 1.82 m Copernico Telescope (+AFOSC; range 340-820 nm; resolution 1.4 nm).

Name                         | z         |   Type   | Phase     | Notes 
ASASSN-15mx                  | 0.031     |    Ia    | ~ +9d     | (1)    

(1) The expansion velocity of the ejected material, as inferred from the position of the absorption of the SiII 6355 \AA, is about 10200 km/s. Best match with SN 1998bu.

Classification was 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.

Padova Asiago SN group