About: A remarkable recurrent nova in M 31: The optical observations

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	In this Letter we address the optical lightcurve and progenitor system of M 31N 2008-12a. Photometry of the 2013 eruption, combined with three previous eruptions, enabled construction of a template lightcurve of a very fast nova (t2(V)=4 days). The archival data allowed recovery of the progenitor system in optical and near-UV data, indicating a red-giant secondary with bright accretion disk, or alternatively a system with a sub-giant secondary but dominated by a disk. The eruptions of M 31N 2008-12a, and a number of historic X-ray detections, indicate a unique system with a recurrence timescale of 1 yr. This implies the presence of a very high-mass white dwarf and a high accretion rate. The recovered progenitor system is consistent with such an elevated rate of accretion. We encourage additional observations, especially towards the end of 2014. In this Letter we address the optical lightcurve and progenitor system of M 31N 2008-12a. Photometry of the 2013 eruption, combined with three previous eruptions, enabled construction of a template lightcurve of a very fast nova (t2(V)=4 days). The archival data allowed recovery of the progenitor system in optical and near-UV data, indicating a red-giant secondary with bright accretion disk, or alternatively a system with a sub-giant secondary but dominated by a disk. The eruptions of M 31N 2008-12a, and a number of historic X-ray detections, indicate a unique system with a recurrence timescale of 1 yr. This implies the presence of a very high-mass white dwarf and a high accretion rate. The recovered progenitor system is consistent with such an elevated rate of accretion. We encourage additional observations, especially towards the end of 2014. (en)
Title	A remarkable recurrent nova in M 31: The optical observations A remarkable recurrent nova in M 31: The optical observations (en)
skos:prefLabel	A remarkable recurrent nova in M 31: The optical observations A remarkable recurrent nova in M 31: The optical observations (en)
skos:notation	RIV/67985815:_____/14:00429426!RIV15-AV0-67985815
http://linked.open...avai/riv/aktivita	I P
http://linked.open...avai/riv/aktivity	I, P(LG12001)
http://linked.open...iv/cisloPeriodika	March
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Votruba, Viktor Hornoch, Kamil
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Astronomický ústav AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	1104
http://linked.open...ai/riv/idVysledku	RIV/67985815:_____/14:00429426
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	galaxies: individual: M 31; novae; cataclysmic variables (en)
http://linked.open.../riv/klicoveSlovo	cataclysmic variables novae galaxies: individual: M 31
http://linked.open...odStatuVydavatele	FR - Francouzská republika
http://linked.open...ontrolniKodProRIV	[8E9CE9734E96]
http://linked.open...i/riv/nazevZdroje	Astronomy & Astrophysics
http://linked.open...in/vavai/riv/obor	BN
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	8 (xsd:int)
http://linked.open...vavai/riv/projekt	Study of properties of asteroids and stellar systems with photometric observations with the Danish 1.54-m telescope at the European Southern Observatory
http://linked.open...UplatneniVysledku	2014
http://linked.open...v/svazekPeriodika	563
http://linked.open...iv/tvurceVysledku	Bode, M. F. Darnley, M. J. Hornoch, Kamil Shafter, A. W. Votruba, Viktor Henze, M. Ness, J.-U. Williams, S. C.
http://linked.open...ain/vavai/riv/wos	000333798000154
issn	0004-6361
number of pages	4 (xsd:int)
http://bibframe.org/vocab/doi	10.1051/0004-6361/201423411

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