Asiago spectroscopic classification of ASASSN-14lt and PSN J09525558+4250511

ATel #6804; S. Benetti, P. Ochner, L. Tomasella, E. Cappellaro, N. Elias-Rosa, A. Pastorello, L. Tartaglia, G. Terreran, M. Turatto (INAF Osservatorio Astronomico di Padova)
on 12 Dec 2014; 04:59 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 classification 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      |  Phase      | Notes   
ASASSN-14lt             | 20141211.88  |  0.032   |    Ia       |  -7d        | (1)      
PSN J09525558+4250511   | 20141212.09  |  0.016   |    II       | ~10d        | (2) 
 

(1) ASASSN-14lt was discovered by All Sky Automated Survey for SuperNovae (ATel #6802) in images obtained on UT 20141210.37. It was not detect in images taken on UT 20141208.35 and before. The redshift of the host galaxy IC 299 is z=0.032 (Jones et al. 2009 The 6dF Galaxy Survey DR3, via NED). The expansion velocity as measured from the minimum of SiII 635.5 nm absorption is around 10600 km/s.

(2) Best match with 1999em (Elmhamdi et al. 2003, MNRAS 338, 939) about 10 days after explosion. The redshift of the host galaxy UGC 5295 is z=0.0159 (van Driel et al. 2001, A&A 378, 370, via NED).

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