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Asiago classification of CSS150325:140426+514417

ATel #7331; N. Elias-Rosa, A. Pastorello, S. Benetti, E. Cappellaro, P. Ochner, L. Tartaglia, G. Terreran, L. Tomasella, M. Turatto (INAF OAPd)
on 1 Apr 2015; 08:26 UT
Credential Certification: Lina Tomasella (lina.tomasella@oapd.inaf.it)

Subjects: Optical, Supernovae

We report the spectroscopic confirmation of CSS150325:140426+514417 (the candidate has been selected among those released by the Catalina Real-Time Transient Survey; see http://crts.caltech.edu/ ) through observations obtained with the 1.82-m Copernico Telescope of the Asiago Astronomical Observatory (+ AFOSC; range 340-820 nm, resolution 1.3 nm).

A spectrogram of CSS150325:140426+514417 obtained on March 30.94 UT shows it is likely a Type Ic supernova. Adopting for the anonymous host galaxy an approximate redshift z = 0.046, as inferred from the position of the most prominent lines, a good match is found with the Type Ic SN 2004aw (Taubenberger et al. 2006, MNRAS, 371, 1459), a few days after the maximum light.

The Asiago classification spectra are posted at this website: URL http://sngroup.oapd.inaf.it. The classification was made using the GELATO (Harutyunyan et al. 2008, A.Ap. 488, 383) and SNID (Blondin and Tonry 2007, Ap.J. 666, 1024) tools.