Asiago spectroscopic observation of two transients
ATel #13267; L. Tomasella, S. Benetti, E. Cappellaro, N. Elias-Rosa, M. Turatto (INAF - Osservatorio Astronomico di Padova)
on 6 Nov 2019; 11:54 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Lina Tomasella (lina.tomasella@oapd.inaf.it)
Subjects: Optical, Supernovae
The Asiago Transient Classification Program (Tomasella et al. 2014, AN, 335, 841) reports the spectroscopic observation of ATLAS19zay (SN 2019tmu), and ZTF19acjdwqv (SN 2019toi).
The targets were supplied by the ATLAS survey (Tonry et al. (2011, PASP, 123, 58) and the ALeRCE team (http://alerce.science) using the ZTF (https://www.ztf.caltech.edu/; Kulkarni et al. 2018, ATel 11266) data stream.
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
ATLAS19zay |SN2019tmu | Anonymous | 2019-10-27 | 2019-11-05 | 0.0362 | Ia | 1 week pre-max | 1
ZTF19acjdwqv |SN2019toi | WISEA J031913.59+073506.6| 2019-10-28 | 2019-11-05 | 0.049 | Ia | few days pre-max| 2
(1) The spectrum is consistent with those of SNIa about one week before maximum. The expansion velocity deduced from the Si II 635.5 nm absorption is about 12100 km/s. The redshift is derived from a narrow H-alpha of the host galaxy.
(2) The spectrum is consistent with those of SNIa few days before maximum. The expansion velocity deduced from the Si II 635.5 nm absorption is about 9700 km/s. The redshift is from SNID and GELATO 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.
Padova-Asiago SN Group
