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Optical re-brightening of M31N 2017-09a confirmed

ATel #11076; A. Valcheva (University of Sofia, Bulgaria), M. Minev (University of Sofia, Bulgaria), A. Kostov (IA-NAO, BAS), E. Ovcharov (University of Sofia, Bulgaria), P. Nedialkov (University of Sofia, Bulgaria)
on 19 Dec 2017; 07:03 UT
Credential Certification: Evgeni Ovcharov (evgeni@phys.uni-sofia.bg)

Subjects: Optical, Nova, Transient

We confirm the optical re-brightening of the nova M31N 2017-09a (AT2017glc; see TNS). The observations were carried out with the 50/70 Schmidt telescope at NAO Rozhen, Bulgaria in R band. Dates and magnitudes are as follows: 2017 Nov 24.70 UT 19.62 ± 0.12 (5x300s), 2017 Dec 08.71 UT 19.49 ± 0.12 (4x300s), 2017 Dec 09.69 UT 18.97 ± 0.09 (4x300s), 2017 Dec 10.70 UT 19.12 ± 0.08 (5x300s), 2017 Dec 15.83 UT 18.23 ± 0.05 (4x300s), The available photometry shows that M31N 2017-09a is a good candidate for a cusp light curve nova in M31 (Strope et al. 2010). Further spectroscopy and photometry observations are recommended.