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M31N 2017-01e: Discovery of a Previous Eruption in this Enigmatic Recurrent Nova

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arxiv 2211.06834 v1 pith:DKORQ2AK submitted 2022-11-13 astro-ph.SR astro-ph.GAastro-ph.HE

Allen W. Shafter , Kenta Taguchi , Jingyuan Zhao , Kamil Hornoch This is my paper · ORCID
classification astro-ph.SRastro-ph.GAastro-ph.HE
keywords novaeruptionm31ndaysdiscoveryjanuaryrecurrenttime
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abstract

We report the discovery of a previously unknown eruption of the recurrent nova M31N 2017-01e that took place on 11 January 2012. The earlier eruption was detected by Pan-STARRS and occurred 1847 days (5.06 yr) prior to the eruption on 31 January 2017 (M31N 2017-01e). The nova has now been seen to have had a total of four recorded eruptions (M31N 2012-01c, 2017-01e, 2019-09d, and 2022-03d) with a mean time between outbursts of just $929.5\pm6.8$ days ($2.545\pm0.019$ yr), the second shortest recurrence time known for any nova. We also show that there is a blue variable source ($\langle V \rangle = 20.56\pm0.17$, $B-V\simeq0.045$), apparently coincident with the position of the nova, that exhibits a 14.3 d periodicity. Possible models of the system are proposed, but none are entirely satisfactory.

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  1. Association between Recurrent Novae and Nova Super-Remnants

    astro-ph.GA 2024-11 conditional novelty 2.0 of 10

    A review of nova super-remnants: the prototypical M31N 2008-12a remnant, new Galactic examples around KT Eridani and RS Ophiuchi, and a survey finding none in M31 or the LMC.

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