SCAT classification of optical transients
ATel #12762; A. Do, A. V. Payne, M. A. Tucker, M. E. Huber, B. J. Shappee (IfA, UH Manoa)
on 15 May 2019; 02:47 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Michael Tucker (tuckerma95@gmail.com)
Subjects: Optical, Cataclysmic Variable, Supernovae, Transient
The Spectral Classification of Astronomical Transients (SCAT) survey (ATel #) presents the classification of 12 optical transients. We report optical spectroscopy (330-970nm) taken with the University of Hawaii 88-inch (UH88) telescope using the SuperNova Integral Field Spectrograph (SNIFS). Transients were classified using the SuperNova IDentification code (SNID, Blondin & Tonry 2007, ApJ, 666, 1024). Redshifts given to 2 decimal places are derived from supernova lines, otherwise the redshift is from host emission lines or NED.
Survey Name IAU Name Date Obs.(UT) Disc ATel. Type Phase Redshift Notes
ZTF19aatgrxl SN2019enu 2019-05-11 --- Ia-norm -6 (2) 0.062
ATLAS19jmh SN2019evv 2019-05-11 --- Ia-pec post-max 0.055 (1)
ZTF19aatgznl SN2019ekb 2019-05-11 --- Ia-norm -5 (3) 0.067
ZTF19aatnefp SN2019eke 2019-05-11 --- Ia-norm +2 (4) 0.060
ATLAS19inu SN2019eok 2019-05-11 --- Ia-norm -6 (2) 0.04
ZTF19aatzlmw SN2019eow 2019-05-11 --- Ia-norm -1 (4) 0.07
ZTF19aatvkrn SN2019ell 2019-05-11 --- Ia-norm +1 (5) 0.051
ATLAS19kej AT2019exh 2019-05-11 --- CV --- 0 (2)
PTSS19clcj SN2019ejg 2019-05-12 --- Ia-norm -1 (3) 0.01
ATLAS19kky SN2019fbv 2019-05-12 --- II young 0.028 (3)
ATLAS19kcs SN2019exc 2019-05-12 --- Ia-91bg +10(4) 0.06 (4)
ATLAS19kdv SN2019exg 2019-05-12 --- Ia-norm ~+90 0.01 (5)
(1) Matches SN Ia-91T templates and the Ia-09dc-like SN 2007if.
(2) Blue continuum with H-alpha and H-beta in emission at z=0, consistent with a CV outburst.
(3) Blue, mostly featureless continuum with possible weak Balmer emission. Redshift measured from a narrow emission line assumed to be from the host.
(4) Line widths favor Ia-91bg templates but overall line strengths favor Ia-norm templates, could be a transitional SN Ia-norm/91bg.
(5) Matches the classification from ATel #12749
