Spectroscopic Classification of AT2023ghq and AT2023gjg with the Lick Shane telescope

ATel #16009; K. W. Davis, K. Taggart, M. J. Bustamante-Rosell, R. J. Foley (UCSC)
on 24 Apr 2023; 22:14 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Maria Jose Bustamante-Rosell (majoburo@gmail.com)

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We report the classifications of AT2023ghq and AT2023gjg from spectroscopic observations with the Kast spectrograph on the Shane telescope obtained on 2023 Apr 23 UT. The targets were supplied by ATLAS and ALeRCE (selected from the ZTF data stream) respectively. The classifications were performed with SNID (Blondin & Tonry, 2007, ApJ, 666, 1024).

 
Name         | IAU Name  | RA (J2000)   | Dec (J2000)  |   z    | Type  | Phase | Notes
 
ATLAS23ipv   | AT2023ghq | 15:58:13.048 | +08:54:24.98 |        | Other |       | (1) 
ZTF23aagqyym | AT2023gjg | 09:07:17.972 | +37:30:12.69 | 0.0308 |  II   |       | (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 shows a blue, featureless continuum, consistent with a fast blue optical transient or cataclysmic variable. We see no obvious emission lines in the spectrum. See AstroNote#2023-99. (2) The spectrum shows a blue continuum with a broad bump consistent with H-alpha at this redshift.