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Spectroscopic classification of ZTF transients

ATel #15773; Stephanie Figuereo (UCSC), Stefan Kimura (Willamette University), Rafael Nunez (SFSU), Monika Soraisam (NOIRLab), Kevin McKinnon, Puragra Guhathakurta (UCSC)
on 22 Nov 2022; 22:12 UT
Credential Certification: Monika Soraisam (monika.soraisam@noirlab.edu)

Subjects: Optical, Supernovae, Transient

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 November 19 UT for ZTF22abtootl and 2022 November 20 UT for ZTF22absqxti and ZTF22absqxes with the Kast double spectrograph on the Shane 3-m telescope at Lick Observatory.

 
Name                |  IAU Name         |  RA (J2000)         |  Dec (J2000)          | z            |  Type        |  Phase 
ZTF22abtootl        |  AT2022aacx       |  11h11m39.09s       |  +37d05m41.5s         | 0.076        |  Ia-norm     |  -14 to 10 days 
ZTF22absqxti        |  AT2022zyj        |  05h50m50.06s       |  +58d57m50.8s         | 0.066        |  Ia-norm     |  -14 to 10 days 
ZTF22absqxes        |  AT2022zsp        |  05h05m37.68s       |  +32d31m08.7s         | 0.028        |  Ia-norm     |   14 to 22 days 

Note: Classifications were performed with DASH (Muthukrishna et al. 2019, arXiv:1903.02557). Light curves can be accessed at https://antares.noirlab.edu/loci/ANT2022k63krgkl4ed5 (ZTF22abtootl), https://antares.noirlab.edu/loci/ANT2022hy13ah3viavt (ZTF22absqxti), and https://antares.noirlab.edu/loci/ANT20221t5x8j201lha (ZTF22absqxes).