کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1779046 1523751 2014 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
V380 Dra: New short-period totally eclipsing active binary
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم نجوم و فیزیک نجومی
پیش نمایش صفحه اول مقاله
V380 Dra: New short-period totally eclipsing active binary
چکیده انگلیسی


• In this study, the first BVR photometry and analysis of V380 Dra are presented.
• Analysis revealed that the system is a detached short period active binary.
• Both components have dark spots on their surface.

In this study, first complete and standard BVR light curves and photometric analysis of the eclipsing binary system V380 Dra are presented. Photometric analysis result indicates that the system has components which are cool main sequence stars. In light and color curves, remarkable asymmetry is observed, especially after secondary minimum, which is believed to be a result of chromospheric activity in one or both components. O–C diagram of available small number of eclipse times, together with new eclipse timings in this work, exhibits no significant variation. Preliminary light curve solution shows that the secondary minimum is total eclipse. By using the advantage of total eclipse and mass-luminosity relation, it is found that the system has a possible mass ratio of q = 0.81. First estimation of masses and radii of primary and secondary components are M1M1 = 0.77 M⊙,M2M⊙,M2 = 0.62 M⊙M⊙ and R1R1 = 0.93 R⊙,R2R⊙,R2 = 0.77 R⊙R⊙, respectively.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: New Astronomy - Volume 27, February 2014, Pages 19–24
نویسندگان
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