Padova-Asiago Supernova Group
The Asiago Transient Classification Program

The program started in 2011 with the aim to classify all transients that are accessible from Asiago and are bright enough for our telescope/instrumentation. We use mainly the 1.82m Copernico telescope of Cima Ekar and, if not available, the 1.22m Galileo telescope of the Pennar station. A few cases of transients classified by our group with other facilities (eg. TNG) are included in the database.
Transient classification information and spectra (fits format) are made immediately available at our site. The spectra are semi-automatic reduction with archive calibration data. Please keep this in mind when using them.
For SN classification we compare the output of two automatic SN classification codes: Gelato (Harutyunyan et al. 2008, A&A 488, 383) and SNID (Blondin and Tonry 2007, Ap.J. 666, 1024).
If you use some of the information posted in these pages please make a reference to the paper Tomasella etal. 2014, A.N. 335, 841.

Latest classifications
sn galaxy RA DEC discoverer type redshift ref class fits
UGC 11128 18:09:20.87 +18:17:56.29 ASAS-SN Ia 0.018056 ATEL
SDSS 06:24:07.00 +36:19:60.00 Maticic Ia 0.089 ATEL
anonymous 02:49:10.36 +14:36:02.48 ATLAS Ia 0.0279 ATEL
SDSS J235339.22+0345 23:53:31.13 +03:44:08.18 ATLAS Ia-91T like 0.0388 ATEL
UGC 10104 15:57:28.35 +30:03:39.10 G. Duszanowicz, M. Zolnowski Ia 0.0328 ATEL

2017awk in UGC 11128
2017awk in UGC 11128
Discovered by: ASAS-SN
p>The Asiago Transient Classification Program (Tomasella et al. 2014, AN, 335, 841) reports the spectroscopic observation of ASASSN-17co The target was supplied by All Sky Automated Survey for SuperNovae (ASAS-SN).

The observation was performed with the Asiago 1.82m Copernico Telescope (+AFOSC; range 340-820 nm; resolution 1.4 nm).

Survey name | IAU name  | Host galaxy | Disc. Date (UT) | Obs. Date (UT) | redshift | type |  phase  | notes
ASASSN-17co | SN2017awk |  UGC 11128  | 2017/02/16.630  | 2017/02/18.16  | 0.018056 |  Ia  | pre-max |   1  

(1) The spectrum is consistent with those of Type Ia supernovae few days before maximum light. If we assume the above listed redshift for the host galaxy (from Marzke et al. 1996, AJ 112, 1803, via NED) an expansion velocity of about 11800 km/s is derived from the Si-II 635.5nm absorption.

The classification was performed using the GELATO (Harutyunyan et al. 2008, A&A, 488, 383)
and SNID (Blondin and Tonry 2007, ApJ, 666, 1024) tools.

The Asiago classification spectra are posted at the website