O-C Analysis of Algol-type Eclipsing Binary UU And
Using all available minimum times of Algol-type eclipsing binary UU And, Observed(O) - Calculated (C) based orbital period analysis of UU And is presented in this study. O-C diagram of UU And is represented by cyclic variation superimposed on an upward parabolic variation. The upward parabolic varia...
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| Language: | English |
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Çanakkale Onsekiz Mart University
2020-12-01
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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/1462441 |
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| author | Oğuz Öztürk |
| author_facet | Oğuz Öztürk |
| author_sort | Oğuz Öztürk |
| collection | DOAJ |
| description | Using all available minimum times of Algol-type eclipsing binary UU And, Observed(O) - Calculated (C) based orbital period analysis of UU And is presented in this study. O-C diagram of UU And is represented by cyclic variation superimposed on an upward parabolic variation. The upward parabolic variation was modelled by assuming non-conservative mass transfer from the less massive to the more massive component to explain the secular period increase of the system. The rate of fractional mass transfer (β) was calculated to be 0.947. Cyclic O-C variation at period of 14 years was detected in the diagram. Light travel time effect (LTTE) caused by additional body in the system was assumed in order to explain the cyclic O-C variation. Using the mass function obtained from O-C analysis, the possible mass of the third component was found to be in the order of solar mass. Such a massive additional body show itself distinctly in the light curve of UU And. On the contrary, no light contribution from an additional body has been detected in the literature so far. Therefore, we conclude that precise high resolution spectroscopic observations are required in order to clarify the existence of a third body and/or magnetic cycle, which may also give rise to cyclic O-C variation in the binary star system. |
| format | Article |
| id | doaj-art-8344f61f40b04284ac9aee5230d951b6 |
| institution | Kabale University |
| issn | 2757-5195 |
| language | English |
| publishDate | 2020-12-01 |
| publisher | Çanakkale Onsekiz Mart University |
| record_format | Article |
| series | Journal of Advanced Research in Natural and Applied Sciences |
| spelling | doaj-art-8344f61f40b04284ac9aee5230d951b62025-02-05T17:58:10ZengÇanakkale Onsekiz Mart UniversityJournal of Advanced Research in Natural and Applied Sciences2757-51952020-12-016226427010.28979/jarnas.845094453O-C Analysis of Algol-type Eclipsing Binary UU AndOğuz Öztürk0https://orcid.org/0000-0002-9135-9865ÇANAKKALE ONSEKİZ MART ÜNİVERSİTESİUsing all available minimum times of Algol-type eclipsing binary UU And, Observed(O) - Calculated (C) based orbital period analysis of UU And is presented in this study. O-C diagram of UU And is represented by cyclic variation superimposed on an upward parabolic variation. The upward parabolic variation was modelled by assuming non-conservative mass transfer from the less massive to the more massive component to explain the secular period increase of the system. The rate of fractional mass transfer (β) was calculated to be 0.947. Cyclic O-C variation at period of 14 years was detected in the diagram. Light travel time effect (LTTE) caused by additional body in the system was assumed in order to explain the cyclic O-C variation. Using the mass function obtained from O-C analysis, the possible mass of the third component was found to be in the order of solar mass. Such a massive additional body show itself distinctly in the light curve of UU And. On the contrary, no light contribution from an additional body has been detected in the literature so far. Therefore, we conclude that precise high resolution spectroscopic observations are required in order to clarify the existence of a third body and/or magnetic cycle, which may also give rise to cyclic O-C variation in the binary star system.https://dergipark.org.tr/en/download/article-file/1462441techniques: photometricstars: individual: uu andeclipsing binary star systemsteknik fotometriyıldızlar: bireysel: uu andörten çift yıldız sistemi |
| spellingShingle | Oğuz Öztürk O-C Analysis of Algol-type Eclipsing Binary UU And Journal of Advanced Research in Natural and Applied Sciences techniques: photometric stars: individual: uu and eclipsing binary star systems teknik fotometri yıldızlar: bireysel: uu and örten çift yıldız sistemi |
| title | O-C Analysis of Algol-type Eclipsing Binary UU And |
| title_full | O-C Analysis of Algol-type Eclipsing Binary UU And |
| title_fullStr | O-C Analysis of Algol-type Eclipsing Binary UU And |
| title_full_unstemmed | O-C Analysis of Algol-type Eclipsing Binary UU And |
| title_short | O-C Analysis of Algol-type Eclipsing Binary UU And |
| title_sort | o c analysis of algol type eclipsing binary uu and |
| topic | techniques: photometric stars: individual: uu and eclipsing binary star systems teknik fotometri yıldızlar: bireysel: uu and örten çift yıldız sistemi |
| url | https://dergipark.org.tr/en/download/article-file/1462441 |
| work_keys_str_mv | AT oguzozturk ocanalysisofalgoltypeeclipsingbinaryuuand |