Inflows, Outflows, and a Giant Donor in the Remarkable Recurrent Nova M31N 2008-12a?-Hubble Space Telescope Photometry of the 2015 Eruption

0482448 - ASÚ 2018 RIV US eng J - Journal Article
Darnley, M.J. - Hounsell, R. - Godon, M. - Perley, D.A. - Henze, M. - Kuindersma, S. - Williams, B. F. - Williams, S.C. - Bode, M.F. - Harman, D. J. - Hornoch, Kamil - Link, M. - Ness, J.-U. - Ribeiro, V.A.R.M. - Sion, E. M. - Shafter, A.W. - Shara, M. M.
Inflows, Outflows, and a Giant Donor in the Remarkable Recurrent Nova M31N 2008-12a?-Hubble Space Telescope Photometry of the 2015 Eruption.
Astrophysical Journal. Roč. 849, č. 2 (2017), 96/1-96/17. ISSN 0004-637X. E-ISSN 1538-4357
Institutional support: RVO:67985815
Keywords : accretion * accretion disks * cataclysmic variables
OECD category: Astronomy (including astrophysics,space science)
Impact factor: 5.551, year: 2017

The recurrent nova M31N 2008-12a experiences annual eruptions, contains a near-Chandrasekhar-mass white dwarf, and has the largest mass accretion rate in any nova system. In this paper, we present Hubble Space Telescope (HST) WFC3/UVIS photometry of the late decline of the 2015 eruption. We couple these new data with archival HST observations of the quiescent system and Keck spectroscopy of the 2014 eruption. The late-time photometry reveals a rapid decline to a minimum luminosity state, before a possible recovery/rebrightening in the run up to the next eruption.
Permanent Link: http://hdl.handle.net/11104/0277883