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Spectroscopic observation of the transient ZTF19acbzgog/AT2019rsi in M31

ATel #13210; Monika Soraisam (NCSA/UIUC), Chien-Hsiu Lee (NSF OIR Lab), Gautham Narayan (UIUC), Thomas Matheson (NSF OIR Lab), Abhijit Saha (NSF OIR Lab), Arizona-NOAO Temporal Analysis and Response to Events System (ANTARES) team
on 21 Oct 2019; 16:36 UT
Credential Certification: Monika Soraisam (soraisam@noao.edu)

Subjects: Optical, Nova, Transient

We report the spectroscopic observation of the transient ZTF19acbzgog/AT2019rsi in M31. It was flagged by a filter on the ANTARES alert-broker (https://antares.noao.edu/) customized to find transients in M31 from the ZTF public alert stream.

 
Name          | Alternative name |    RA (J2000)     |    Dec (J2000)    |    First detection: MJD, mag       
 
ZTF19acbzgog  | AT2019rsi        |    00:42:23.53    |    41:11:52.47    |    58761.342859,   R~18.8+/-0.08 

We obtained Gemini GMOS spectrum (4x450sec exposures) of this nova on 18 Oct 2019 UT through the ToO program GN-2019B-Q-221 (PI: Lee, C.-H.). The spectrum clearly shows strong H-alpha and OI emission lines, suggesting that it is likely a nova outburst.

Its light curve can be accessed at https://antares.noao.edu/alerts/locus/5852970.