Matches in SemOpenAlex for { <https://semopenalex.org/work/W2914887257> ?p ?o ?g. }
- W2914887257 abstract "In 2015 and 2017, the AM CVn candidate NSV 1440 showed superoutbursts having the characteristic features of WZ Sge-type dwarf novae (DNe). By analogy with hydrogen-rich cataclysmic variables (CVs), we can interpret these outbursts as `double superoutbursts' which are composed of the first superoutburst with early superhumps and the second superoutburst with ordinary superhumps. The object also showed multiple rebrightenings after the main superoutbursts. Early superhumps had been never observed in AM CVn stars and candidates, thus NSV 1440 is the first confirmed WZ Sge-type AM CVn candidate. We obtained the early superhump period of 0.0252329(49) d and the growing (stage A) superhumps period of 0.025679(20) d from the 2015 superoutburst. We regarded the early superhump period as the orbital one. By using these periods we estimated the mass ratio $q = $0.045(2). This value suggests that NSV 1440 is indeed an AM CVn star and that the secondary is a semi-degenerate star." @default.
- W2914887257 created "2019-02-21" @default.
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- W2914887257 date "2019-03-11" @default.
- W2914887257 modified "2023-09-24" @default.
- W2914887257 title "NSV 1440: first WZ Sge-type object in AM CVn stars and candidates" @default.
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- W2914887257 doi "https://doi.org/10.1093/pasj/psz018" @default.
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