Independent Discovery of a Nova Candidate in M31
ATel #15529; A. Valcheva (Sofia University, Bulgaria), P. Nedialkov (Sofia University, Bulgaria), E. Ovcharov (Sofia University, Bulgaria)
on 28 Jul 2022; 15:10 UT
Credential Certification: Antoniya Valcheva (valcheva@phys.uni-sofia.bg)
Subjects: Optical, Nova, Transient
We report independent discovery of a nova candidate in M31 (designated as M31N 2022-07e) on 5x300 sec co-added R-band CCD images taken on 2022 July 26.9510 UT with the 50/70 Schmidt telescope at Rozhen NAO, Bulgaria. (Discovery image can be found here). We have confirmed an increase in brightness of the transient on 5x300 sec co-added R-band images taken on 2022 July 27.9767 UT with the same instrumentation. R-band magnitudes are summarized below:
2022 July 26.9510 UT R=18.6±0.2 mag 5x300 sec
2022 July 27.9767 UT R=17.6±0.1 mag 5x300 sec
The object was independently discovered on July 26.860 UT by Mi Zhang, Xing Gao, Xingming Observatory Sky Survey (XOSS) and designated as AT2022puk (= XM77MZ) (= PNV J00425697+4116333). The object is located at R.A.=0h42m56s.97, Decl.=+41o16'33".30 (equinox 2000.0), which is 142.6" east and 24.8" north of the center of M31.
Additional optical photometry is also available:
2022 July 26.9694 UT B=18.8±0.1 mag 3x300 sec
2022 July 27.9918 UT V=18.0±0.1 mag 3x300 sec
Spectral observations are recommended to classify the transient spectroscopically.
The work was partially supported by the Ministry of Education and Science of the Republic of Bulgaria, National RI Roadmap Project DO1-383/18.12.2020 and NSF Bulgaria grant DN18/10-11.12.2017.
