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Asiago spectroscopic classification of MASTER OT J044212.20+230616.7 in PGC 1681539

ATel #6488; P. Ochner, S. Benetti, L. Tomasella, G. Terreran, A. Pastorello, E. Cappellaro, N. Elias-Rosa and M. Turatto (INAF Osservatorio Astronomico di Padova)
on 23 Sep 2014; 08:34 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Enrico Cappellaro (enrico.cappellaro@oapd.inaf.it)

Subjects: Optical, Supernovae

The Asiago Transient Classification Program (Tomasella et al. 2014, AN, 335, 841) reports the spectroscopic classification of MASTER OT J044212.20+230616.7 in PGC 1681539 (ATel #6484).

The observation was 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  
MASTER OT J044212.20+230616.7 | 20140923.08     | 0.016       | IIn/Ia-CSM    | +60 d |  

The spectrum is very similar to that of the type IIn/Ia-CSM SN 2005gj at about 2 month after maximum. The only remarkable difference is a broad and strong P-Cygni feature consistent with NaID/He I 587.6nm. The emission component, having a FWHM~9500 km/s, largely overwhelms the blue-shifted shallow absorption.

Classification was done with GELATO (Harutyunyan et al. 2008, A&A, 488, 383). The Asiago classification spectra are posted at the website http://sngroup.oapd.inaf.it.