Orbital Period Changes of Selected Two Semi-Deteached Binaries
Since the data obtained from satellite data are very sensitive, the minima times of the target systems have obtained from Kepler (K2) and TESS observations. A total of 14 minima times were obtained from Kepler (K2) data for the AF Gem system and 11 minima times in two different sectors from the TESS...
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Çanakkale Onsekiz Mart University
2022-06-01
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| Series: | Journal of Advanced Research in Natural and Applied Sciences |
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| Online Access: | https://dergipark.org.tr/en/download/article-file/2080029 |
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| author | Muhammed Faruk Yıldırım |
| author_facet | Muhammed Faruk Yıldırım |
| author_sort | Muhammed Faruk Yıldırım |
| collection | DOAJ |
| description | Since the data obtained from satellite data are very sensitive, the minima times of the target systems have obtained from Kepler (K2) and TESS observations. A total of 14 minima times were obtained from Kepler (K2) data for the AF Gem system and 11 minima times in two different sectors from the TESS data for the RY Gem system. In this study, orbital period behaviors of semi-detached binaries (SDBs) AF Gem and RY Gem systems have investigated, together with minima times obtained from literature and satellite data. It has been observed that the orbital periods of AF Gem and RY Gem decrease. The period change rates of AF Gem and RY Gem systems are determined as -4.1×10-8 and -6.5×10-6 day/ year. The magnetic activity of the cooler components of the systems may be the reason for the periods decrease, and therefore the mass loss rates of the systems have calculated. For AF Gem and RY Gem, mass loss rate was found to be -4.4×10-8 M⊙/year and -8.2×10-7 M⊙/year, respectively. In the O-C graph of AF Gem, sinüsoidal variations also exist. Sinusoidal change may be demonstrated as being the result of a light time effect (LITE) via a tertiary body around the eclipsing pair. The minimum mass of probable third star around AF Gem has found to be 0.24 M⊙. |
| format | Article |
| id | doaj-art-e5e3019f2aab4f738e2288ad28bd8f99 |
| institution | Kabale University |
| issn | 2757-5195 |
| language | English |
| publishDate | 2022-06-01 |
| publisher | Çanakkale Onsekiz Mart University |
| record_format | Article |
| series | Journal of Advanced Research in Natural and Applied Sciences |
| spelling | doaj-art-e5e3019f2aab4f738e2288ad28bd8f992025-02-05T17:58:10ZengÇanakkale Onsekiz Mart UniversityJournal of Advanced Research in Natural and Applied Sciences2757-51952022-06-018223724510.28979/jarnas.1023222453Orbital Period Changes of Selected Two Semi-Deteached BinariesMuhammed Faruk Yıldırım0https://orcid.org/0000-0003-2382-7011ÇANAKKALE ONSEKİZ MART ÜNİVERSİTESİSince the data obtained from satellite data are very sensitive, the minima times of the target systems have obtained from Kepler (K2) and TESS observations. A total of 14 minima times were obtained from Kepler (K2) data for the AF Gem system and 11 minima times in two different sectors from the TESS data for the RY Gem system. In this study, orbital period behaviors of semi-detached binaries (SDBs) AF Gem and RY Gem systems have investigated, together with minima times obtained from literature and satellite data. It has been observed that the orbital periods of AF Gem and RY Gem decrease. The period change rates of AF Gem and RY Gem systems are determined as -4.1×10-8 and -6.5×10-6 day/ year. The magnetic activity of the cooler components of the systems may be the reason for the periods decrease, and therefore the mass loss rates of the systems have calculated. For AF Gem and RY Gem, mass loss rate was found to be -4.4×10-8 M⊙/year and -8.2×10-7 M⊙/year, respectively. In the O-C graph of AF Gem, sinüsoidal variations also exist. Sinusoidal change may be demonstrated as being the result of a light time effect (LITE) via a tertiary body around the eclipsing pair. The minimum mass of probable third star around AF Gem has found to be 0.24 M⊙.https://dergipark.org.tr/en/download/article-file/2080029semi-detached binaries (sdbs)orbital period changeso-c analysisaf gemry gem. |
| spellingShingle | Muhammed Faruk Yıldırım Orbital Period Changes of Selected Two Semi-Deteached Binaries Journal of Advanced Research in Natural and Applied Sciences semi-detached binaries (sdbs) orbital period changes o-c analysis af gem ry gem. |
| title | Orbital Period Changes of Selected Two Semi-Deteached Binaries |
| title_full | Orbital Period Changes of Selected Two Semi-Deteached Binaries |
| title_fullStr | Orbital Period Changes of Selected Two Semi-Deteached Binaries |
| title_full_unstemmed | Orbital Period Changes of Selected Two Semi-Deteached Binaries |
| title_short | Orbital Period Changes of Selected Two Semi-Deteached Binaries |
| title_sort | orbital period changes of selected two semi deteached binaries |
| topic | semi-detached binaries (sdbs) orbital period changes o-c analysis af gem ry gem. |
| url | https://dergipark.org.tr/en/download/article-file/2080029 |
| work_keys_str_mv | AT muhammedfarukyıldırım orbitalperiodchangesofselectedtwosemideteachedbinaries |