OBSERVATIONS AND LIGHT CURVE SOLUTIONS OF THE ECLIPSING BINARIES USNO-B1.0 1395-0370184 AND USNO-B1.0 1395-0370731

IF 0.8 4区物理与天体物理 Q4 ASTRONOMY & ASTROPHYSICS

Serbian Astronomical Journal Pub Date : 2016-12-01 DOI:10.2298/SAJ160328005K

D. Kjurkchieva, V. Popov, D. Vasileva, N. Petrov

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°.

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食双星usno-b1.0 1395-0370184和usno-b1.0 1395-0370731的观测及光曲线解

我们利用斯隆滤光器g'， i'对新发现的食星USNO-B1.0 1395-0370184和USNO-B1.0 1395-0370731进行了光度观测。我们的数据显示，它们的轨道周期比以前的值大得多。该结果将USNO-B1.0 1395-0370184从超短周期双星(P=0.197 d)转变为短周期双星(P=0.251 d)。我们观测的光曲线解表明，USNO-B1.0 1395-0370184和USNO-B1.0 1395-0370731是过接触双星，其组成成分为K矮星，质量和半径接近。光曲线畸变由角半径约为20°的冷点再现。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Serbian Astronomical Journal ASTRONOMY & ASTROPHYSICS-

CiteScore

1.00

自引率

0.00%

发文量

审稿时长

12 weeks

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related fields (written upon invitation only), Original Scientific Papers - article in which are presented previously unpublished author''s own scientific results, Preliminary Reports - original scientific paper, but shorter in length and of preliminary nature, Professional Papers -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.