Show simple item record

dc.contributor.authorNakata, Chikako
dc.contributor.authorMiguel Agustino, Enrique de 
dc.contributor.authorMuyllaert, Eddy
dc.identifier.citationNakata, C., Miguel, E., Muyllaert, E... y otros (2014). OT J075418.7+381225 and OT J230425.8+062546: Promising candidates for the period bouncer. Publications of the Astronomical Society of Japan, 66(6), 116.
dc.description.abstractWe report on photometric observations of two dwarf novae, OT J075418.7+381225 and OT J230425.8+062546, which showed superoutbursts in 2013 (OT J075418) and in 2011 (OT J230425). Their mean periods of the superhump were 0.0722403(26) d (OT J075418) and 0.067317(35) d (OT J230425). These objects showed a very long growth stage of the superhump (stage A) and a large period decrease in the stage A–B transition. The long stage A suggests slow evolution of the superhump due to the very small mass ratio of these objects. The declining rates during the plateau phase in the superoutburst of these objects were lower than those of SU UMa-type dwarf novae (DNe) with a similar superhump period. These properties were similar to those of SSS J122221.7−311523, the most likely candidate for the period bouncer. Therefore, these two DNe are regarded as likely candidates for the period bouncer. We estimated the number density of period bouncers roughly from our observations for the last five years. There is a possibility that these WZ Sge-type DNe with unusual outburst properties might account for the missing population of the period bouncer suggested by the evolutionary scenario.es_ES
dc.description.sponsorshipThis work was supported by a Grant-in-Aid “Initiative for High- Dimensional Data-Driven Science through Deepening of Sparse Modeling” from the Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan.We are grateful to many amateur observers for providing a lot of data used in this research.
dc.publisherAstronomical Society of Japanes_ES
dc.relation.isversionofPublisher’s versión
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.subject.otherAccretion, accretion diskses_ES
dc.subject.otherNovae, cataclysmic variableses_ES
dc.subject.otherStars: dwarf novaees_ES
dc.subject.otherStars: individual (OT J075418.7+381225, OT J230425.8+062546)es_ES
dc.titleOT J075418.7+381225 and OT J230425.8+062546: Promising candidates for the period bounceres_ES

Files in this item

This item appears in the following Collection(s)

Show simple item record

Atribución-NoComercial-SinDerivadas 3.0 España
Except where otherwise noted, this item's license is described as Atribución-NoComercial-SinDerivadas 3.0 España

Copyright © 2008-2010. ARIAS MONTANO. Repositorio Institucional de la Universidad de Huelva
Contact Us | Send Feedback |