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 (firstname.lastname@example.org)
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