spectral classification of 2 PSNe with the Asiago 1.82 telescope
ATel #4672; L. Tomasella, S. Benetti, E. Cappellaro, P. Ochner, A. Pastorello, M. Turatto
on 23 Dec 2012; 15:05 UT
Credential Certification: Lina Tomasella (lina.tomasella@oapd.inaf.it)
Subjects: Optical, Supernovae
We report the spectral classification of 2 supernovae with the Asiago 1.82-m Copernico Telescope
(+ AFOSC range 340-820 nm; resolution 1.3 nm).
A spectrum of PSN J15035487+4206553 obtained on Dec. 23.10 UT shows that this supernova
is characterized by features that are typical
of stripped envelope SNe. Adopting for the host galaxy UGC9684 a redshift z=0.016872
(Bottinelli et al. 1993, A&AS 102, 57, via NED), the best match was found with
various type Ib/c supernovae some days past maximum.
A spectrum of PSN J04424114+1834597 obtained on Dec. 22.98 UT shows that this supernova
is a type-Ia at redshift z~0.012. The best match was found
with various type-Ia supernovae few days before the maximum light.
The expansion velocity as deduced from the position of the Si-II 635.5nm
absorption is about 10500 km/s.
The Asiago classification spectra are
posted at this website: URL http://graspa.oapd.inaf.it ; classification
was made via GELATO (Harutyunyan et al. 2008, A.Ap. 488, 383) and SNID
(Blondin and Tonry 2007, Ap.J. 666, 1024).
