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
NGC3310 10:38:47.275 +53:30:30.36 ZTF II 0.0034 REF
  04:04:25.556 +70:36:31.93 ALeRCE CV 0 REF
  23:56:05.113 +53:43:46.37 ZTF QSO 1.54 REF
WISEA J094236.66+241 09:42:37.385 +24:18:05.47 ASASSN Ia 0.051371 ATEL
LEDA 213897 11:53:26.229 10:53:47.31 ATLAS IIn 0.021 REF

2021gmj in NGC3310
2021gmj in NGC3310
Discovered by: ZTF
The spectrum is consistent with that of a Type II SN, few days after explosion. The expansion velocity of the ejecta as derived from the broad Halpha emission is about 13500 km/s. The redshift z=0.0034 is derived from the narrow Halpha emission of the host galaxy, fully consistent with z=0.00331 reported by Mould et al. 2000 ApJ 529, 786 (via NED).