Padova-Asiago Supernova Group
The Asiago Transient Classification Program

Presentation
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
PGC 28268 09:49:56.70 +67:10:59.56 GAIA IIb 0.016 ATEL
fits
UGC 11128 18:09:20.87 +18:17:56.29 ASAS-SN Ia 0.018056 ATEL
fits
SDSS 06:24:07.00 +36:19:60.00 Maticic Ia 0.089 ATEL
fits
anonymous 02:49:10.36 +14:36:02.48 ATLAS Ia 0.0279 ATEL
fits
SDSS J235339.22+0345 23:53:31.13 +03:44:08.18 ATLAS Ia-91T like 0.0388 ATEL
fits


2017ati in PGC 28268
2017ati in PGC 28268
Discovered by: GAIA
The Asiago Transient Classification Program (Tomasella et al. 2014, AN, 335, 841) reports the spectroscopic observation of Gaia17aiq. The target was supplied by Gaia Photometric Science Alerts programme . 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 Gaia17aiq | SN2017ati | PGC 28268 | 2017-02-06.43 | 2017-02-27.78 | 0.016 | IIb | maximum | 1 (1) Spectrum consistent with those of Type IIb supernovae close to maximum. If the above listed redshift is assumed (derived from the SN spectral features), an expansion velocity of about 10900 km/s is derived from the H-alpha 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 http://sngroup.oapd.inaf.it.