Five New Heartbeat Star Systems with Tidally Excited Oscillations Discovered Based on TESS Data
Heartbeat stars (HBSs) with tidally excited oscillations (TEOs) are ideal astrophysical laboratories for studying the internal properties of the systems. In this paper, five new HBSs exhibiting TEOs are discovered using TESS photometric data. The orbital parameters are derived using a corrected vers...
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2024-01-01
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| Series: | The Astrophysical Journal |
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| Online Access: | https://doi.org/10.3847/1538-4357/ad794c |
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| author | Min-Yu Li Sheng-Bang Qian Ai-Ying Zhou Li-Ying Zhu Wen-Ping Liao Er-Gang Zhao Xiang-Dong Shi Fu-Xing Li Qi-Bin Sun |
| author_facet | Min-Yu Li Sheng-Bang Qian Ai-Ying Zhou Li-Ying Zhu Wen-Ping Liao Er-Gang Zhao Xiang-Dong Shi Fu-Xing Li Qi-Bin Sun |
| author_sort | Min-Yu Li |
| collection | DOAJ |
| description | Heartbeat stars (HBSs) with tidally excited oscillations (TEOs) are ideal astrophysical laboratories for studying the internal properties of the systems. In this paper, five new HBSs exhibiting TEOs are discovered using TESS photometric data. The orbital parameters are derived using a corrected version of Kumar et al.'s model based on the Markov Chain Monte Carlo method. The TEOs in these objects are examined, and their pulsation phases and modes are identified. The pulsation phases of the TEOs in TIC 266809405, TIC 266894805, and TIC 412881444 are consistent with the dominant l = 2, m = 0, or ±2 spherical harmonic. For TIC 11619404, although the TEO phase is close to the m = +2 mode, the m = 0 mode cannot be excluded because of the low inclination in this system. The TEO phase in TIC 447927324 shows a large deviation (>2 σ ) from the adiabatic expectations, suggesting that it is expected to be a traveling wave or that the pulsations are nonadiabatic. In addition, these TEOs occur at relatively low orbital harmonics, and we cautiously suggest that this may be an observational bias. These objects are valuable sources for studying the structure and evolution of eccentricity orbit binaries and extending the TESS HBS catalog with TEOs. |
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| language | English |
| publishDate | 2024-01-01 |
| publisher | IOP Publishing |
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| series | The Astrophysical Journal |
| spelling | doaj-art-de5c8261c3f34223b93d2cd43a2c93ba2025-08-20T02:17:08ZengIOP PublishingThe Astrophysical Journal1538-43572024-01-01974227810.3847/1538-4357/ad794cFive New Heartbeat Star Systems with Tidally Excited Oscillations Discovered Based on TESS DataMin-Yu Li0https://orcid.org/0000-0002-8564-8193Sheng-Bang Qian1https://orcid.org/0000-0002-5995-0794Ai-Ying Zhou2https://orcid.org/0000-0002-2919-6989Li-Ying Zhu3https://orcid.org/0000-0002-0796-7009Wen-Ping Liao4https://orcid.org/0000-0001-9346-9876Er-Gang Zhao5Xiang-Dong Shi6https://orcid.org/0000-0002-5038-5952Fu-Xing Li7https://orcid.org/0000-0002-0285-6051Qi-Bin Sun8https://orcid.org/0000-0003-0516-404XYunnan Observatories, Chinese Academy of Sciences , Kunming 650216, People's Republic of ChinaDepartment of Astronomy, School of Physics and Astronomy, Yunnan University , Kunming 650091, People's Republic of China ; qiansb@ynu.edu.cn; Key Laboratory of Astroparticle Physics of Yunnan Province, Yunnan University , Kunming 650091, People's Republic of ChinaNational Astronomical Observatories, Chinese Academy of Sciences , A20 Datun Road, Chaoyang District, Beijing 100101, People's Republic of ChinaYunnan Observatories, Chinese Academy of Sciences , Kunming 650216, People's Republic of China; University of Chinese Academy of Sciences , No. 1 Yanqihu East Road, Huairou District, Beijing 101408, People's Republic of ChinaYunnan Observatories, Chinese Academy of Sciences , Kunming 650216, People's Republic of China; University of Chinese Academy of Sciences , No. 1 Yanqihu East Road, Huairou District, Beijing 101408, People's Republic of ChinaYunnan Observatories, Chinese Academy of Sciences , Kunming 650216, People's Republic of ChinaYunnan Observatories, Chinese Academy of Sciences , Kunming 650216, People's Republic of ChinaDepartment of Astronomy, School of Physics and Astronomy, Yunnan University , Kunming 650091, People's Republic of China ; qiansb@ynu.edu.cn; Key Laboratory of Astroparticle Physics of Yunnan Province, Yunnan University , Kunming 650091, People's Republic of ChinaDepartment of Astronomy, School of Physics and Astronomy, Yunnan University , Kunming 650091, People's Republic of China ; qiansb@ynu.edu.cn; Key Laboratory of Astroparticle Physics of Yunnan Province, Yunnan University , Kunming 650091, People's Republic of ChinaHeartbeat stars (HBSs) with tidally excited oscillations (TEOs) are ideal astrophysical laboratories for studying the internal properties of the systems. In this paper, five new HBSs exhibiting TEOs are discovered using TESS photometric data. The orbital parameters are derived using a corrected version of Kumar et al.'s model based on the Markov Chain Monte Carlo method. The TEOs in these objects are examined, and their pulsation phases and modes are identified. The pulsation phases of the TEOs in TIC 266809405, TIC 266894805, and TIC 412881444 are consistent with the dominant l = 2, m = 0, or ±2 spherical harmonic. For TIC 11619404, although the TEO phase is close to the m = +2 mode, the m = 0 mode cannot be excluded because of the low inclination in this system. The TEO phase in TIC 447927324 shows a large deviation (>2 σ ) from the adiabatic expectations, suggesting that it is expected to be a traveling wave or that the pulsations are nonadiabatic. In addition, these TEOs occur at relatively low orbital harmonics, and we cautiously suggest that this may be an observational bias. These objects are valuable sources for studying the structure and evolution of eccentricity orbit binaries and extending the TESS HBS catalog with TEOs.https://doi.org/10.3847/1538-4357/ad794cBinary starsElliptical orbitsStellar oscillationsPulsating variable stars |
| spellingShingle | Min-Yu Li Sheng-Bang Qian Ai-Ying Zhou Li-Ying Zhu Wen-Ping Liao Er-Gang Zhao Xiang-Dong Shi Fu-Xing Li Qi-Bin Sun Five New Heartbeat Star Systems with Tidally Excited Oscillations Discovered Based on TESS Data The Astrophysical Journal Binary stars Elliptical orbits Stellar oscillations Pulsating variable stars |
| title | Five New Heartbeat Star Systems with Tidally Excited Oscillations Discovered Based on TESS Data |
| title_full | Five New Heartbeat Star Systems with Tidally Excited Oscillations Discovered Based on TESS Data |
| title_fullStr | Five New Heartbeat Star Systems with Tidally Excited Oscillations Discovered Based on TESS Data |
| title_full_unstemmed | Five New Heartbeat Star Systems with Tidally Excited Oscillations Discovered Based on TESS Data |
| title_short | Five New Heartbeat Star Systems with Tidally Excited Oscillations Discovered Based on TESS Data |
| title_sort | five new heartbeat star systems with tidally excited oscillations discovered based on tess data |
| topic | Binary stars Elliptical orbits Stellar oscillations Pulsating variable stars |
| url | https://doi.org/10.3847/1538-4357/ad794c |
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