{"title":"OBSERVATIONS AND LIGHT CURVE SOLUTIONS OF THE ECLIPSING BINARIES USNO-B1.0 1395-0370184 AND USNO-B1.0 1395-0370731","authors":"D. Kjurkchieva, V. Popov, D. Vasileva, N. Petrov","doi":"10.2298/SAJ160328005K","DOIUrl":null,"url":null,"abstract":"We present follow-up photometric observations in Sloan filters g', i' of the \n newly discovered eclipsing stars USNO-B1.0 1395-0370184 and USNO-B1.0 \n 1395-0370731. Our data revealed that their orbital periods are considerably \n bigger than the previous values. This result changed the classification of \n USNO-B1.0 1395-0370184 from ultrashort-period binary (P=0.197 d) to \n short-period system (P=0.251 d). The light curve solutions of our \n observations revealed that USNOB1.0 1395-0370184 and USNO-B1.0 1395-0370731 \n are overcontact binaries in which components are K dwarfs, close in masses \n and radii. The light curve distortions were reproduced by cool spots with \n angular radius of around 20°.","PeriodicalId":48878,"journal":{"name":"Serbian Astronomical Journal","volume":null,"pages":null},"PeriodicalIF":0.8000,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Serbian Astronomical Journal","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.2298/SAJ160328005K","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ASTRONOMY & ASTROPHYSICS","Score":null,"Total":0}
引用次数: 1
Abstract
We present follow-up photometric observations in Sloan filters g', i' of the
newly discovered eclipsing stars USNO-B1.0 1395-0370184 and USNO-B1.0
1395-0370731. Our data revealed that their orbital periods are considerably
bigger than the previous values. This result changed the classification of
USNO-B1.0 1395-0370184 from ultrashort-period binary (P=0.197 d) to
short-period system (P=0.251 d). The light curve solutions of our
observations revealed that USNOB1.0 1395-0370184 and USNO-B1.0 1395-0370731
are overcontact binaries in which components are K dwarfs, close in masses
and radii. The light curve distortions were reproduced by cool spots with
angular radius of around 20°.
期刊介绍：
Serbian Astronomical Journal publishes original observations and researches in all branches of astronomy. The journal publishes:
Invited Reviews - review article on some up-to-date topic in astronomy, astrophysics and related fields (written upon invitation only),
Original Scientific Papers - article in which are presented previously unpublished author''s own scientific results,
Preliminary Reports - original scientific paper, but shorter in length and of preliminary nature,
Professional Papers - articles offering experience useful for the improvement of professional practice i.e. article describing methods and techniques, software, presenting observational data, etc.
In some cases the journal may publish other contributions, such as In Memoriam notes, Obituaries, Book Reviews, as well as Editorials, Addenda, Errata, Corrigenda, Retraction notes, etc.
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