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.
Discovered by: ATLAS
The Asiago Transient Classification Program (Tomasella et al. 2014, AN, 335, 841) reports the spectroscopic observation of ATLAS19bfd, ASASSN-19av. The targets were supplied by the ATLAS survey, see Tonry et al. (2011, PASP, 123, 58) and Tonry et al. (ATel #8680)" and the All Sky Automated Survey for SuperNovae ASAS-SN (see Shappee et al. 2014, ApJ, 788, 48)..The observations were 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 ATLAS19bfd | SN2019rx | 2MASX J05220008-0711330 | 2019-01-13.37 | 2019-01-15.90 | 0.036882 | Ia | -7 days | 1 ASASSN-19av | SN2019rz | UGC 3554 | 2019-01-14.41 | 2019-01-15.98 | 0.018853 | IIn | +4 days | 2
(1) Noisy spectrum consistent with those of Type Ia SNe about one week before maximum, The redshift is from Jones, D.H. et al. 2009, 6dF Galaxy Survey Data Release 3 (via NED)
(2) Spectrum is consistent with those of SN 1998S few days after explosion, after allowing for a substantial reddening as suggest by an intense NaID Galactict absorption (EW~0.6 nm). The spectrum is dominated by a broad HeII 468.6 nm emission, while the Balmer lines are all unresolved and mostly coming from the background galaxy. The redshift is from Theureau et al. 1998 A&AS, 130, 333 (via NED)