NOT classification of ASASSN-18sg (SN 2018fcw)
ATel #11961; J. Fynbo (NBI, DAWN), M. Stritzinger (Aarhus), Subo Dong (KIAA-PKU), A. Grosch, F. L. Guttesen, C. P. Knudsen, K. Loeve, and K. S. Nielsen (NBI)
on 17 Aug 2018; 09:11 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Subo Dong (dongsubo@pku.edu.cn)
Subjects: Optical, Supernovae, Transient
Referred to by ATel #: 11962
On behalf of a Danish Summer School in Observational Astrophysics currently being held at the Nordic Optical Telescope,
we report the spectroscopic classification of ASASSN-18sg (IAU name SN 2018fcw). The candidate was discovered by the All-Sky Automated Survey for SuperNovae (ASAS-SN: Shappee et al. 2014) on 2018-08-14.9 at an apparent g-band magnitude of 17.6. The host galaxy is 2MASS J00505596-0745536.
Observations were performed with the 2.56 m Nordic Optical Telescope equipped with ALFOSC (range 350-950 nm; resolution 1.6 nm FWHM) on 2018-08-17.1. Inspection of the spectrum indicates this is a Type-Ia supernova at or around maximum light. Comparison to a library of template supernovae spectra using SNID (Blondin and Tonry 2007) reveals good matches with the normal SN 2006ax and SN 2007F a few days before maximum light. SNID computes a redshift of z=0.055.
