کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5487805 | 1523725 | 2017 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Kottamia 74-inch telescope discovery of the new eclipsing binary 2MASS J20004638Â +Â 0547475.: First CCD photometry and light curve analysis
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
نجوم و فیزیک نجومی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Kottamia 74-inch telescope discovery of the new eclipsing binary 2MASS J20004638Â +Â 0547475.: First CCD photometry and light curve analysis Kottamia 74-inch telescope discovery of the new eclipsing binary 2MASS J20004638Â +Â 0547475.: First CCD photometry and light curve analysis](/preview/png/5487805.png)
چکیده انگلیسی
A CCD photometric study is presented for the eclipsing binary system 2MASS J20004638 +â0547475. Observations of the system were obtained in the V, R and I colours with the 2Kx2K CCD attached to 1.88 m Kottamia Optical Telescope. New times of light minimum and new ephemeris were obtained. The V, R and I light curves were analyzed using the PHOEBE 0.31 program to determine geometrical and physical parameters of the system. The results show that 2MASS J20004638 +â0547475, is A-Type WUMa and is an overcontact binary with high fill-out factor =â69%. The current evolutionary status of the system indicates that the primary component lies very close to the main sequence while the secondary is evolved. The asymmetric maxima were studied and a modeling of the hot spot parameters is given.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: New Astronomy - Volume 53, May 2017, Pages 35-38
Journal: New Astronomy - Volume 53, May 2017, Pages 35-38
نویسندگان
M.S. Darwish, A. Shokry, S.M. Saad, M.A. El-Sadek, A. Essam, M. Ismail,