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Cyclic brightening in the short-period WZ Sge-type cataclysmic variable SDSS J080434.20+510349.2

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dc.contributor.author Zharikov S.
dc.contributor.author Tovmassian G.
dc.contributor.author Neustroev V.
dc.contributor.author Michel R.
dc.contributor.author Zurita C.
dc.contributor.author Echevarría J.
dc.contributor.author Bikmaev I.
dc.contributor.author Pavlenko E.
dc.contributor.author Jeon Y.
dc.contributor.author Valyavin G.
dc.contributor.author Aviles A.
dc.date.accessioned 2018-09-18T20:01:33Z
dc.date.available 2018-09-18T20:01:33Z
dc.date.issued 2008
dc.identifier.issn 0004-6361
dc.identifier.uri https://dspace.kpfu.ru/xmlui/handle/net/135843
dc.description.abstract Aims. We observed a new cataclysmic variable (CV) SDSS J080434.20+510349.2 to study the origin of long-term variability found in its light curve.Methods. Multi-longitude, time-resolved, photometric observations were acquired to analyze this uncommon behavior, which has been found in two newly discovered CVs. Results. This study of SDSS J080434.20+510349.2 concerns primarily the understanding of the nature of the observed, double-humped, light curve and its relation to a cyclic brightening that occurs during quiescence. The observations were obtained early in 2007, when the object was at about , about 0.4 mag brighter than the pre-outburst magnitude. The light curve shows a sinusoidal variability with an amplitude of about 0.07 mag and a periodicity of 42.48 min, which is half of the orbital period of the system. We observed in addition two "mini-outbursts" of the system of up to 0.6 mag, which have a duration of about 4 days each. The "mini-outburst" has a symmetric profile and is repeated in approximately every 32 days. Subsequent monitoring of the system shows a cyclical behavior of such "mini-outbursts" with a similar recurrence period. The origin of the double-humped light curve and the periodic brightening is discussed in the light of the evolutionary state of SDSS J080434.20+510349.2. © 2008 ESO.
dc.relation.ispartofseries Astronomy and Astrophysics
dc.subject Methods: observational
dc.subject Stars: dwarf novae
dc.subject Stars: novae, cataclysmic variables
dc.subject Techniques: photometric
dc.title Cyclic brightening in the short-period WZ Sge-type cataclysmic variable SDSS J080434.20+510349.2
dc.type Article
dc.relation.ispartofseries-issue 2
dc.relation.ispartofseries-volume 486
dc.collection Публикации сотрудников КФУ
dc.relation.startpage 505
dc.source.id SCOPUS00046361-2008-486-2-SID47249147518


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  • Публикации сотрудников КФУ Scopus [24551]
    Коллекция содержит публикации сотрудников Казанского федерального (до 2010 года Казанского государственного) университета, проиндексированные в БД Scopus, начиная с 1970г.

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