کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1778811 1523734 2016 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Period change investigation of the low mass ratio contact binary BO Ari
ترجمه فارسی عنوان
بررسی تغییر دوره ای باینری BO Ari کنتاکت نسبت جرم کم
کلمات کلیدی
ستاره ها: باینری: نزدیک؛ ستاره ها: باینری: گرفتی؛ ستاره ها: فرد (BO Ari)
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم نجوم و فیزیک نجومی
چکیده انگلیسی


• The low mass ratio contact binary BO Ari with a fillout of 27.72% is presented.
• The long-term orbital period decreases at a rate of dP/dt=−3.49×10−7dP/dt=−3.49×10−7 d yr−1−1.
• BO Ari may evolve into a deeper contact system.

A photometric study and period change analysis for the A-type low mass ratio contact binary BO Ari is presented. The BVR light curves were fitted by using the Wilson–Devinney method. The photometric solution yields a low mass ratio of q = 0.1754(±0.0016) with a contact degree of f   = 27.72%(±2.37%). We found a long-term orbital period decrease at a rate of dPdt=−3.49×10−7dPdt=−3.49×10−7 d yr−1−1. This result indicates that the system is undergoing mass transfer from the primary component to the secondary with a mass transfer rate of m˙1m1 = −7.77×10−8−7.77×10−8 yr−1−1. With the period decrease, the inner and outer critical Roche surfaces will tighten and cause the degree of contact to increase. Therefore, BO Ari may evolve into a deeper contact system.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: New Astronomy - Volume 44, April 2016, Pages 12–16
نویسندگان
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