In addition to these two outbursts, I also led the discovery of the 2022 outburst (M31N 2022-03d). Reference: www.astronomerstelegram.org?read=15729
The putative quiescent optical counterpart is so bright that it is clearly visible in images taken by some amateur astronomers.
All in all, this is a very interesting nova system. A complete model for the system will require a more thorough investigation of the quiescent counterpart, which is currently underway. Read our paper here: iopscience.iop.org/article/10.3...arxiv.org/abs/2410.07105 🔭
Discovery of Two New Eruptions of the Ultrashort Recurrence Time Nova M31N 2017-01e* , Allen W. Shafter, Jingyuan Zhao, Kamil Hornoch, Hana Kučáková, Kenta Taguchi, Jiashuo Zhang, Jia You, Binyu Wang, Runwei Xu, Weiye Wang, Yuqing Ren, Lanhe Ding, Xiaochang Yan, Mi Zhang, Wei-Hao Wang, Howard E. Bond, Robert Williams, Gregory R. Zeimann
In an attempt to characterize the quiescent counterpart, Prof. Shafter et al. obtained a spectrum of the putative quiescent counterpart using the Hobby-Eberly Telescope in Jan. 2023. The spectrum is dominated by a blue giant, which cannot be explained by current models.🔭
The counterpart of the nova is likely associated with a blue 20.5 mag variable star that displays 14.3 d period. At the distance of M31, absolute magnitude of the putative quiescent counterpart is ∼ −4, given its blue, would be unprecedented for known recurrent nova system.🔭
M31N 2017-01e has a recurrence time of ~2.5 yr, which is the second shortest known for any nova. After adding the two outbursts I recently discovered, the nova is known to 6 outbursts, which is the second most in the M31 galaxy. We expect the next eruption occur in Mar. 2027.🔭
Today is paper day! Recently, I discovered two outbursts of the unusual recurrent nova M31N 2017-01e, one new (M31N 2024-08c), one old (M31N 2014-06c). After discussions with Prof. Allen Shafter from San Diego State University, an RNAAS paper was published today. 🔭
I made follow-up observations of this PCCP object remotely using the Burke-Gaffney Observatory (code 851) at Saint Mary's University, and the measurements are on the PCCP. ☄️🔭
