Spectroscopic classification of ZTF transients

ATel #15562; Stephanie Figuereo, Kevin McKinnon, Rafael Nunez, Stefan Kimura, Puragra Guhathakurta (UCSC), Monika Soraisam (NOIRLab)
on 21 Aug 2022; 00:12 UT
Credential Certification: Monika Soraisam (monika.soraisam@noirlab.edu)

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We report the spectroscopic observations of the following transients from the SALVATION project (ATel #13952). They were flagged from the ZTF public alert stream by the ANTARES alert-broker. The spectra were obtained on 2022 August 20 UT with the Kast double spectrograph on the Shane 3-m telescope at Lick Observatory.

 
Name             | IAU Name         | RA (J2000)       | Dec (J2000)        | z          | Type             | Phase 
ZTF22abaeves     | AT2022rhi        | 17:49:30.146     | +04:18:03.35       | 0          | Dwarf nova       | around peak 
ZTF22abaovwj     | AT2022rlc        | 18:34:52.496     | +25:09:15.25       | 0.098?     | Ia?              | after peak 
ZTF22abbausm     | AT2022rky        | 21:14:29.097     | -09:02:51.42       | 0.0297     | Ia-91T           | around peak 

Note: The spectrum for ZTF22abaeves shows high order Balmer lines in absorption with a blue continuum. The transient is, thus, likely a dwarf nova. Classification for ZTF22abaovwj and ZTF22abbausm were performed with DASH (Muthukrishna et al. 2019, arXiv:1903.02557). Light curves can be accessed at https://antares.noirlab.edu/loci/ANT20226e9soi4sr04y (ZTF22abaeves), https://antares.noirlab.edu/loci/ANT2022duo71afiqlki (ZTF22abaovwj), and https://antares.noirlab.edu/loci/ANT20220emilrw7p5co (ZTF22abbausm).