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Asiago spectroscopic classification of ASASSN-18sg

ATel #11962; L. Tomasella, S. Benetti, E. Cappellaro, M. Turatto (INAF Osservatorio Astronomico di Padova)
on 17 Aug 2018; 09:30 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Lina Tomasella (lina.tomasella@oapd.inaf.it)

Subjects: Optical, Supernovae, Transient

The Asiago Transient Classification Program (Tomasella et al. 2014, AN, 335, 841) reports the spectroscopic classification of ASASSN-18sg (AT2018fcw) discovered during the ongoing All Sky Automated Survey for SuperNovae (ASAS-SN, Shappee et al. 2014).

The observations were performed with the Asiago 1.82 m Copernico Telescope equipped with AFOSC (range 340-820 nm; resolution 1.4 nm).

 
 
Survey Name   | IAI Name      | Discovery date (UT)  | Discovery mag    | Observation (UT)    |  Type     | z         | Notes| 
ASASSN-18sg   | SN2018fcw     |  2018-08-14 23:45:36 | 17.6             |2018–08-17.00        |   Ia      | 0.05      | (1)  |                  

(1) Best match with Type Ia SN around maximum light. The velocity of the ejecta, as measured from SiII 635.5 nm, is around 10000 km/s, assuming a redshift of 0.05 as derived from SNID SN template fitting.

Classification was done with GELATO (Harutyunyan et al. 2008, A&A, 488, 383) and SNID (Blondin and Tonry 2007, ApJ, 666, 1024). The Asiago classification spectra are posted at the website http://sngroup.oapd.inaf.it.

Padova-Asiago SN Group