Asiago spectroscopic classification of two transients.
ATel #12337; S. Benetti, L. Tomasella, E. Cappellaro, M. Turatto (INAF Osservatorio Astronomico di Padova)
on 28 Dec 2018; 23:40 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Stefano Benetti (stefano.benetti@oapd.inaf.it)
Subjects: Optical, Supernovae
The Asiago Transient Classification Program (Tomasella et al. 2014, AN, 335, 841) reports the spectroscopic observation of AT2018kzc and ATLAS18bchg. The targets were supplied by TNS (https://wis-tns.weizmann.ac.il) and ATLAS survey (see Tonry et al., 2011, PASP, 123, 58).
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
AT2018kzc | SN2018kzc | Anonymous | 2018-12-27.97 | 2018-12-28.87 | 0.0378 | Ia | premax | 1
ATLAS18bchg | SN2018kyi | Anonymous | 2018-12-27.87 | 2018-12-28.91 | 0.0214 | Ia | premax | 2
(1) Spectrum vero similar to that of SN 1995D about 6 days before B maximum. The expansion velocity deduced from the SiII 635.5nm minimum is about 11300 km/s. The redshift has been deduced from the SN spectral fitting.
(2) Spectrum vero similar to that of SN 1994D about 9 days before B maximum. The expansion velocity deduced from the SiII 635.5nm minimum is about 11100 km/s. The redshift has been deduced from the SN spectral fitting.
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.
