Recovering variable stars in large surveys: EAup Algol-type class in the Catalina Survey

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dc.contributor.authorCarmo, A.
dc.contributor.authorFerreira Lopes, C. E.
dc.contributor.authorPapageorgiou, A.
dc.contributor.authorJablonski, F. J.
dc.contributor.authorRodrigues, C. V.
dc.contributor.authorDrake, A. J.
dc.contributor.authorCros, N. J. G.
dc.contributor.authorCatelan, Márcio
dc.date.accessioned2021-09-29T15:59:43Z
dc.date.available2021-09-29T15:59:43Z
dc.date.issued2020
dc.description.abstractThe discovery and characterization of Algol eclipsing binaries (EAs) provide an opportunity to contribute for a better picture of the structure and evolution of low-mass stars. However, the cadence of most current photometric surveys hinders the detection of EAs since the separation between observations is usually larger than the eclipse(s) duration and hence few measurements are found at the eclipses. Even when those objects are detected as variable, their periods can be missed if an appropriate oversampling factor is not used in the search tools. In this paper, we apply this approach to find the periods of stars catalogued in the Catalina Real-Time Transient Survey (CRTS) as EAs having unknown period (EA up ). As a result, the periods of ∼56percent of them were determined. Eight objects were identified as low-mass binary systems and modelled with the Wilson & Devinney synthesis code combined with a Markov chain Monte Carlo optimization procedure. The computed masses and radii are in agreement with theoretical models and show no evidence of inflated radii. This paper is the first of a series aiming to identify suspected binary systems in large surveys.
dc.format.extent12 páginas
dc.fuente.origenOUP
dc.identifier.doi10.1093/mnras/staa2518
dc.identifier.eissn1365-2966
dc.identifier.issn0035-8711
dc.identifier.urihttps://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=9269716
dc.identifier.urihttps://doi.org/10.1093/mnras/staa2518
dc.identifier.wosidWOS:000587746400087
dc.information.autorucInstituto de astrofísica ; Catelan, Márcio ; S/I ; 1001514
dc.issue.numero1
dc.language.isoen
dc.nota.accesoContenido parcial
dc.pagina.final2844
dc.pagina.inicio2833
dc.publisherOUP
dc.revistaMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETYes_ES
dc.revistaMonthly Notices of the Royal Astronomical Society
dc.rightsacceso restringido
dc.subject.ods11 Sustainable Cities and Communities
dc.subject.odspa11 Ciudades y comunidades sostenibles
dc.titleRecovering variable stars in large surveys: EAup Algol-type class in the Catalina Surveyes_ES
dc.typeartículo
dc.volumen498
sipa.codpersvinculados1001514
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