Spectroscopic Classifications of Optical Transients with the Lick Shane telescope
ATel #15406; K. Taggart, C. B. Dickinson, R. J. Foley (UCSC)
on 31 May 2022; 04:27 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Kirsty Taggart (k.taggart@ucsc.edu)
Subjects: Optical, Supernovae
We report the following classifications of optical transients from spectroscopic observations with the Kast spectrograph on the Shane telescope. The targets were supplied by the Young Supernova Experiment and ZTF. All observations were made on 2022 May 27 UT. Classifications were performed with SNID (Blondin & Tonry, 2007, ApJ, 666, 1024).
Name | IAU Name | RA (J2000) | Dec (J2000) | z | Type | Notes
PS22efe | 2022kan | 14:19:30.25 | +42:57:03.46 | 0.0767 | SN | (1)
ZTF22aagvtzz | 2022hsu | 22:11:37.72 | +46:18:40.03 | 0.018 | IIn | (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) The spectrum is blue and featureless, consistent with a supernova.
(2) This was classified on 2022-05-11 with UH88/SNIFS as a SN with a featureless blue continuum. That spectrum also had some narrow H presumably from circumstellar material. The Lick spectrum has narrow hydrogen, making AT2022hsu officially a SN IIn, albeit with other spectral features unlike most SNe IIn and somewhat similar to peculiar SNe I (except for the narrow H).
