کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5487806 1523725 2017 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Multi-band photometric study of the short-period eclipsing binary GR Boo
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم نجوم و فیزیک نجومی
پیش نمایش صفحه اول مقاله
Multi-band photometric study of the short-period eclipsing binary GR Boo
چکیده انگلیسی
We present BVRI light curves with complete phase coverage for the short-period (p = 0.377day) eclipsing binary star GR Boo. We carried out the observations using the SARA 90  cm telescope located at Kitt Peak National Observatory. We obtained six new light curve minimum times. By fitting all of the available O-C minimum times, we obtained an updated ephemeris that shows the orbital period of GR Boo is decreasing at a rate of P˙=−2.36×10−7 days/year. This decrease in its period can be explained by either mass transfer from the more massive component to the less massive one, or angular momentum exchange due to magnetic activities. We also obtained a set of revised orbital parameters using the Wilson & Devinney program. And finally, we concluded that GR Boo is a contact binary with a dark spot.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: New Astronomy - Volume 53, May 2017, Pages 39-43
نویسندگان
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