Close-In Substellar Companions and the Formation of sdB-Type Close Binary Stars
The sdB-type close binaries are believed to have experienced a common-envelope phase and may evolve into cataclysmic binaries (CVs). About 10% of all known sdB binaries are eclipsing binaries consisting of very hot subdwarf primaries and low-mass companions with short orbital periods. The eclipse pr...
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| Format: | Article |
| Language: | English |
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CTU Central Library
2015-02-01
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| Series: | Acta Polytechnica CTU Proceedings |
| Online Access: | https://ojs.cvut.cz/ojs/index.php/APP/article/view/2885 |
| _version_ | 1819063583922716672 |
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| author | L. Y. Zhu S. B. Qian E.-G. Zhao E. Fernández Lajús Z.-T. Han |
| author_facet | L. Y. Zhu S. B. Qian E.-G. Zhao E. Fernández Lajús Z.-T. Han |
| author_sort | L. Y. Zhu |
| collection | DOAJ |
| description | The sdB-type close binaries are believed to have experienced a common-envelope phase and may evolve into cataclysmic binaries (CVs). About 10% of all known sdB binaries are eclipsing binaries consisting of very hot subdwarf primaries and low-mass companions with short orbital periods. The eclipse profiles of these systems are very narrow and deep, which benefits the determination of high precise eclipsing times and makes the detection of small and close-in tertiary bodies possible. Since 2006 we have monitored some sdB-type eclipsing binaries to search for the close-in substellar companions by analyzing the light travel time effect. Here some progresses of the program are reviewed and the formation of sdB-type binary is discussed. |
| first_indexed | 2024-12-21T15:16:59Z |
| format | Article |
| id | doaj.art-c8adb528e1d54ade8c8261fb4d0861b1 |
| institution | Directory Open Access Journal |
| issn | 2336-5382 |
| language | English |
| last_indexed | 2024-12-21T15:16:59Z |
| publishDate | 2015-02-01 |
| publisher | CTU Central Library |
| record_format | Article |
| series | Acta Polytechnica CTU Proceedings |
| spelling | doaj.art-c8adb528e1d54ade8c8261fb4d0861b12022-12-21T18:59:08ZengCTU Central LibraryActa Polytechnica CTU Proceedings2336-53822015-02-012118318710.14311/APP.2015.02.01832647Close-In Substellar Companions and the Formation of sdB-Type Close Binary StarsL. Y. Zhu0S. B. Qian1E.-G. Zhao2E. Fernández Lajús3Z.-T. Han4Yunnan Observatories, Chinese Academy of Sciences, P.O. Box 110, 650011 Kunming, P.R. China Key Laboratory for the Structure and Evolution of Celestial Bodies, Chinese Academy of Sciences, P.O. Box 110, 650011 Kunming, P. R. China. Physical Sciences Department, Graduate University of the Chinese Academy of Sciences, Yuquan Road 19, Sijingshang Block, 100049 Beijing, ChinaYunnan Observatories, Chinese Academy of Sciences, P.O. Box 110, 650011 Kunming, P.R. China Key Laboratory for the Structure and Evolution of Celestial Bodies, Chinese Academy of Sciences, P.O. Box 110, 650011 Kunming, P. R. China. Physical Sciences Department, Graduate University of the Chinese Academy of Sciences, Yuquan Road 19, Sijingshang Block, 100049 Beijing, ChinaYunnan Observatories, Chinese Academy of Sciences, P.O. Box 110, 650011 Kunming, P.R. China Key Laboratory for the Structure and Evolution of Celestial Bodies, Chinese Academy of Sciences, P.O. Box 110, 650011 Kunming, P. R. ChinaFacultad de Ciencias Astronomicasy Geofısicas, Universidad Nacional de La Plata, 1900 La Plata, Buenos Aires, Argentina. Instituto de Astrofisica de La Plata (CCT La plata - CONICET/UNLP), ArgentinaYunnan Observatories, Chinese Academy of Sciences, P.O. Box 110, 650011 Kunming, P.R. China Key Laboratory for the Structure and Evolution of Celestial Bodies, Chinese Academy of Sciences, P.O. Box 110, 650011 Kunming, P. R. China. Physical Sciences Department, Graduate University of the Chinese Academy of Sciences, Yuquan Road 19, Sijingshang Block, 100049 Beijing, ChinaThe sdB-type close binaries are believed to have experienced a common-envelope phase and may evolve into cataclysmic binaries (CVs). About 10% of all known sdB binaries are eclipsing binaries consisting of very hot subdwarf primaries and low-mass companions with short orbital periods. The eclipse profiles of these systems are very narrow and deep, which benefits the determination of high precise eclipsing times and makes the detection of small and close-in tertiary bodies possible. Since 2006 we have monitored some sdB-type eclipsing binaries to search for the close-in substellar companions by analyzing the light travel time effect. Here some progresses of the program are reviewed and the formation of sdB-type binary is discussed.https://ojs.cvut.cz/ojs/index.php/APP/article/view/2885 |
| spellingShingle | L. Y. Zhu S. B. Qian E.-G. Zhao E. Fernández Lajús Z.-T. Han Close-In Substellar Companions and the Formation of sdB-Type Close Binary Stars Acta Polytechnica CTU Proceedings |
| title | Close-In Substellar Companions and the Formation of sdB-Type Close Binary Stars |
| title_full | Close-In Substellar Companions and the Formation of sdB-Type Close Binary Stars |
| title_fullStr | Close-In Substellar Companions and the Formation of sdB-Type Close Binary Stars |
| title_full_unstemmed | Close-In Substellar Companions and the Formation of sdB-Type Close Binary Stars |
| title_short | Close-In Substellar Companions and the Formation of sdB-Type Close Binary Stars |
| title_sort | close in substellar companions and the formation of sdb type close binary stars |
| url | https://ojs.cvut.cz/ojs/index.php/APP/article/view/2885 |
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