Du Pont Classifications of 4 ASAS-SN Supernovae

ATel #9300; N. Morrell (Las Campanas Observatory), Benjamin J. Shappee (Hubble Fellow, Carnegie Observatories)
on 2 Aug 2016; 10:25 UT
Credential Certification: Benjamin Shappee (bshappee@obs.carnegiescience.edu)

Tweet

We report optical spectroscopy (range 370-910 nm) of four supernovae discovered by the All-Sky Automated Survey for Supernovae (ASAS-SN; Shappee et al. 2014, ApJ, 788, 48) using the du Pont 2.5-m telescope (+ WFCCD) at Las Campanas Observatory on July 31 and Aug. 01 2016 UT. We performed a cross-correlation with a library of supernova spectra using the "Supernova Identification" code (SNID; Blondin and Tonry 2007, Ap.J. 666, 1024). The details of the classifications are as follows:

 
Name             Disc. ATel     Spec. Type    Phase        Redshift 
ASASSN-16gm      ATel #9188     Ia            31.8 (13.7)  0.036 (0.002; SNID) 
ASASSN-16gz      ATel #9222     Ia            33.2 (15.0)  0.033 (0.003; SNID) 
ASASSN-16ha      ATel #9222     Ia            29.5 (7.8)   0.022529 (host/NED) 
ASASSN-16hw      ATel #9278     Ia            -1.3 (4.8)   0.015 (0.005; SNID)           

We note that our classification and redshift of ASASSN-16hw agrees with the PESTO classification (ATel #9289). We also note that SNID returned reasonable 91bg-like matches for ASASSN-16gz.