Spectroscopic Classifications of Optical Transients with the Lick Shane telescope
ATel #12734; T. Hung, G. Dimitriadis, R. J. Foley (UCSC)
on 7 May 2019; 00:21 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Georgios Dimitriadis (gdimitri@ucsc.edu)
Subjects: Optical, Supernovae
We report the following classifications of optical transients from spectroscopic observations with the Kast spectrograph on the 3-m Shane telescope. Targets were supplied by PSH and ATLAS. All observations were made on 2019 May 05 UT. Classifications were performed with SNID (Blondin & Tonry, 2007, ApJ, 666, 1024).
Name | IAU Name | RA (J2000) | Dec (J2000) | z | Type | Phase | Notes
| SN 2019ehk | 12:22:56.13 | +15:49:33.60 | 0.005 | Ib | peak | (1)
ATLAS19ify | AT 2019eix | 18:42:42.89 | +40:22:07.80 | 0.018 | Ic | -3 d | (2)
Notes:
When the redshift is given to 2 decimal places, it is derived from the SN spectrum. Otherwise, the redshift is determined from the host galaxy. (1) Previous spectroscopic observations reported a red spectrum, with shallow features attributed to H-alpha and He I (indicating a young core-collapse event), and a strong NaID doublet, indicating significant dust extinction (Atels #12707 and #12714). Our spectrum matches several Type Ib supernovae slightly before or around peak magnitude. There are also some matches with Type IIb supernovae. (2) The spectrum also resembles early spectra of the peculiar Type Ic SN 2004aw.
