Detection of a Possible Recurrent Nova in M31
ATel #15813; D. D. Balam (DAO/NRC), M. Kendurkar (PGAO), C. E. Spratt (ret), P. Langill (RAO/University of Calgary) and D. W. E. Green (CBAT)
on 16 Dec 2022; 17:58 UT
Distributed as an Instant Email Notice Transients
Credential Certification: David D. Balam (cosmos@uvic.ca)
Subjects: Optical, Request for Observations, Nova, Variables
Referred to by ATel #: 15815
We report the discovery of a possible recurrent nova in M31 on a co-added 180-s SDSS g' prime CCD frame taken on 2022 Dec. 16, 02:17 UTC with the 1.82-m Plaskett telescope of the Dominion Astrophysical Observatory (National Research Council of Canada).
The object is located at 00:42:00.59, +41:08:48.3 (RMS 0".2), first reported by K. De at ZTF (Graham et al, 2019) on 2020 July 13 and designated as at2020adbp, our transient coincides with the position reported by ZTF to within 0".11
Differential photometry using a nearby star of similar brightness was performed using Image Reduction and Analysis Facility - IRAF (Tody, D. 1986) yielding g = 18.71 +/- 0.08 magnitude.
Follow-up spectroscopic and photometric observations are highly encouraged to determine the transients class and rate of decline.
