Asiago classification of PSN J07164258+2951227 and PS15jz

ATel #7195; L. Tomasella, S. Benetti, E. Cappellaro, N. Elias-Rosa, P. Ochner, A. Pastorello, L. Tartaglia, G. Terreran, M. Turatto (INAF OAPd)
on 10 Mar 2015; 03:55 UT
Credential Certification: Lina Tomasella (lina.tomasella@oapd.inaf.it)

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The Asiago Transient Classification Program (Tomasella et al. 2014, AN, 335, 841) reports the spectroscopic observation of the following transients. Targets were supplied by the Astronomy Section of the Rochester Academy of Sciences (arXiv:1103.5165) and by the CBAT Transient Objects Confirmation Page (TOCP).

The observations were performed with the Asiago 1.82 m Copernico Telescope (+AFOSC; range 340-820 nm; resolution 1.2 nm).

 
Name                        | Date (UT)    |  z       |   Type      | Notes        
PSN J07164258+2951227       | 20150309.84  |  0.010   |    II       | (1) 
PS15jz                      | 20150310.04  |  0.036   |    Ia       | (2) 
 

(1) Young Type-II SN. Best match with SNe 1999gi (Leonard et al. 2002, AJ 124, 2490) and 1999em (Elmhamdi et al. 2003, MNRAS 338, 939), if a redshift of 0.010717 is assumed for the host galaxy UGC 3777 (De Vaucouleurs et al. 1991, RC3.9 via NED).

(2) Host galaxy is UGC 5814 (redshift from Rothberg and Joseph, 2006, AJ 131, 185 via NED). Good matches are obtained with normal Type-Ia SNe around 2 weeks after B-band 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 8800 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.

Padova Asiago SN group