[ Previous | Next | ADS ]

Classification of Gaia17cyr as a Ia supernova

ATel #11002; M. Dennefeld (IAP-Paris and UPMC)
on 24 Nov 2017; 00:40 UT
Credential Certification: Michel Dennefeld (dennefel@iap.fr)

Subjects: Optical, Supernovae

M. Dennefeld (IAP-Paris and UPMC) reports observations of Gaia supernovae candidates with the SAAO 74" telescope equiped with the SpUpNIC spectrograph. Observations during the night of Nov. 23 covered the range 3600-9200 A and the spectral resolution was 5.8 A. Classifications were made with the help of GELATO (Harutyunyan et al. 2008, A&A, 488, 383) Gaia17cyr (=AT2017igq) is classified as a SN Ia, a few days past maximum. With a recession velocity of the 2Mass host galaxy of 14010km/s, the SiII 6355 velocity is measured at -11300 km/s