TESS Asteroseismic Analysis of HD 76920: The Giant Star Hosting an Extremely Eccentric Exoplanet
The Transiting Exoplanet Survey Satellite (TESS) mission searches for new exoplanets. The observing strategy of TESS results in high-precision photometry of millions of stars across the sky, allowing for detailed asteroseismic studies of individual systems. In this work, we present a detailed astero...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2023-01-01
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| Series: | The Astrophysical Journal |
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| Online Access: | https://doi.org/10.3847/1538-4357/acb8ac |
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| author | Chen Jiang Tao Wu Adina D. Feinstein Keivan G. Stassun Timothy R. Bedding Dimitri Veras Enrico Corsaro Derek L. Buzasi Dennis Stello Yaguang Li Savita Mathur Rafael A. García Sylvain N. Breton Mia S. Lundkvist Przemysław J. Mikołajczyk Charlotte Gehan Tiago L. Campante Diego Bossini Stephen R. Kane Jia Mian Joel Ong Mutlu Yıldız Cenk Kayhan Zeynep Çelik Orhan Sibel Örtel Xinyi Zhang Margarida S. Cunha Bruno Lustosa de Moura Jie Yu Daniel Huber Jian-wen Ou Robert A. Wittenmyer Laurent Gizon William J. Chaplin |
| author_facet | Chen Jiang Tao Wu Adina D. Feinstein Keivan G. Stassun Timothy R. Bedding Dimitri Veras Enrico Corsaro Derek L. Buzasi Dennis Stello Yaguang Li Savita Mathur Rafael A. García Sylvain N. Breton Mia S. Lundkvist Przemysław J. Mikołajczyk Charlotte Gehan Tiago L. Campante Diego Bossini Stephen R. Kane Jia Mian Joel Ong Mutlu Yıldız Cenk Kayhan Zeynep Çelik Orhan Sibel Örtel Xinyi Zhang Margarida S. Cunha Bruno Lustosa de Moura Jie Yu Daniel Huber Jian-wen Ou Robert A. Wittenmyer Laurent Gizon William J. Chaplin |
| author_sort | Chen Jiang |
| collection | DOAJ |
| description | The Transiting Exoplanet Survey Satellite (TESS) mission searches for new exoplanets. The observing strategy of TESS results in high-precision photometry of millions of stars across the sky, allowing for detailed asteroseismic studies of individual systems. In this work, we present a detailed asteroseismic analysis of the giant star HD 76920 hosting a highly eccentric giant planet ( e = 0.878) with an orbital period of 415 days, using five sectors of TESS light curve that cover around 140 days of data. Solar-like oscillations in HD 76920 are detected around 52 μ Hz by TESS for the first time. By utilizing asteroseismic modeling that takes classical observational parameters and stellar oscillation frequencies as constraints, we determine improved measurements of the stellar mass (1.22 ± 0.11 M _⊙ ), radius (8.68 ± 0.34 R _☉ ), and age (5.2 ± 1.4 Gyr). With the updated parameters of the host star, we update the semimajor axis and mass of the planet as a = 1.165 ± 0.035 au and ${M}_{{\rm{p}}}\sin i=3.57\pm 0.22\,{M}_{\mathrm{Jup}}$ . With an orbital pericenter of 0.142 ± 0.005 au, we confirm that the planet is currently far away enough from the star to experience negligible tidal decay until being engulfed in the stellar envelope. We also confirm that this event will occur within about 100 Myr, depending on the stellar model used. |
| first_indexed | 2024-03-12T04:44:49Z |
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| institution | Directory Open Access Journal |
| issn | 1538-4357 |
| language | English |
| last_indexed | 2024-03-12T04:44:49Z |
| publishDate | 2023-01-01 |
| publisher | IOP Publishing |
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| series | The Astrophysical Journal |
| spelling | doaj.art-44154bef65484b1d85f9d7ebc378acc02023-09-03T09:29:33ZengIOP PublishingThe Astrophysical Journal1538-43572023-01-0194512010.3847/1538-4357/acb8acTESS Asteroseismic Analysis of HD 76920: The Giant Star Hosting an Extremely Eccentric ExoplanetChen Jiang0https://orcid.org/0000-0002-7614-1665Tao Wu1https://orcid.org/0000-0001-6832-4325Adina D. Feinstein2https://orcid.org/0000-0002-9464-8101Keivan G. Stassun3https://orcid.org/0000-0002-3481-9052Timothy R. Bedding4https://orcid.org/0000-0001-5222-4661Dimitri Veras5https://orcid.org/0000-0001-8014-6162Enrico Corsaro6https://orcid.org/0000-0001-8835-2075Derek L. Buzasi7https://orcid.org/0000-0002-1988-143XDennis Stello8https://orcid.org/0000-0002-4879-3519Yaguang Li9https://orcid.org/0000-0003-3020-4437Savita Mathur10https://orcid.org/0000-0002-0129-0316Rafael A. García11https://orcid.org/0000-0002-8854-3776Sylvain N. Breton12https://orcid.org/0000-0003-0377-0740Mia S. Lundkvist13https://orcid.org/0000-0002-8661-2571Przemysław J. Mikołajczyk14https://orcid.org/0000-0001-8916-8050Charlotte Gehan15https://orcid.org/0000-0002-0833-7084Tiago L. Campante16https://orcid.org/0000-0002-4588-5389Diego Bossini17https://orcid.org/0000-0002-9480-8400Stephen R. Kane18https://orcid.org/0000-0002-7084-0529Jia Mian Joel Ong19https://orcid.org/0000-0001-7664-648XMutlu Yıldız20https://orcid.org/0000-0002-7772-7641Cenk Kayhan21https://orcid.org/0000-0001-9198-2289Zeynep Çelik Orhan22https://orcid.org/0000-0002-9424-2339Sibel Örtel23https://orcid.org/0000-0001-5759-7790Xinyi Zhang24https://orcid.org/0000-0003-1860-1851Margarida S. Cunha25https://orcid.org/0000-0001-8237-7343Bruno Lustosa de Moura26https://orcid.org/0000-0001-6295-3526Jie Yu27https://orcid.org/0000-0002-0007-6211Daniel Huber28https://orcid.org/0000-0001-8832-4488Jian-wen Ou29https://orcid.org/0000-0002-6176-7745Robert A. Wittenmyer30https://orcid.org/0000-0001-9957-9304Laurent Gizon31https://orcid.org/0000-0001-7696-8665William J. Chaplin32https://orcid.org/0000-0002-5714-8618Max-Planck-Institut für Sonnensystemforschung , Justus-von-Liebig-Weg 3, D-37077 Göttingen, Germany ; jiangc@mps.mpg.deYunnan Observatories, Chinese Academy of Sciences , 396 Yangfangwang, Guandu District, Kunming, 650216, People’s Republic of China ; wutao@ynao.ac.cn; Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences , 396 Yangfangwang, Guandu District, Kunming, 650216, People’s Republic of China; Center for Astronomical Mega-Science, Chinese Academy of Sciences , 20A Datun Road, Chaoyang District, Beijing, 100012, People’s Republic of China; University of Chinese Academy of Sciences , Beijing 100049, People’s Republic of China; Institute of Theoretical Physics, Shanxi University , Taiyuan 030006, People's Republic of ChinaDepartment of Astronomy and Astrophysics, University of Chicago , 5640 S. Ellis Avenue, Chicago, IL 60637, USADepartment of Physics and Astronomy, Vanderbilt University , Nashville, TN 37235, USASydney Institute for Astronomy (SIfA), School of Physics, University of Sydney , NSW 2006, Australia; Stellar Astrophysics Centre (SAC), Department of Physics and Astronomy, Aarhus University , Ny Munkegade 120, DK-8000 Aarhus C, DenmarkCentre for Exoplanets and Habitability, University of Warwick , Coventry CV4 7AL, UK; Centre for Space Domain Awareness, University of Warwick , Coventry CV4 7AL, UK; Department of Physics, University of Warwick , Coventry CV4 7AL, UKINAF–Osservatorio Astrofisico di Catania , via S. Sofia 78, I-95123 Catania, ItalyDepartment of Chemistry & Physics, Florida Gulf Coast University , 10501 FGCU Boulevard S., Fort Myers, FL 33965, USASydney Institute for Astronomy (SIfA), School of Physics, University of Sydney , NSW 2006, Australia; Stellar Astrophysics Centre (SAC), Department of Physics and Astronomy, Aarhus University , Ny Munkegade 120, DK-8000 Aarhus C, Denmark; School of Physics, University of New South Wales , NSW 2052, AustraliaSydney Institute for Astronomy (SIfA), School of Physics, University of Sydney , NSW 2006, Australia; Stellar Astrophysics Centre (SAC), Department of Physics and Astronomy, Aarhus University , Ny Munkegade 120, DK-8000 Aarhus C, DenmarkInstituto de Astrofísica de Canarias (IAC) , E-38205 La Laguna, Tenerife, Spain; Universidad de La Laguna (ULL) , Departamento de Astrofísica, E-38206 La Laguna, Tenerife, SpainUniversité Paris-Saclay & Université Paris Cité , CEA, CNRS, AIM, F-91191, Gif-sur-Yvette, FranceINAF–Osservatorio Astrofisico di Catania , via S. Sofia 78, I-95123 Catania, Italy; Université Paris Cité, Université Paris-Saclay , CEA, CNRS, AIM, F-91191, Gif-sur-Yvette, FranceStellar Astrophysics Centre (SAC), Department of Physics and Astronomy, Aarhus University , Ny Munkegade 120, DK-8000 Aarhus C, DenmarkAstronomical Observatory, University of Warsaw , Al. Ujazdowskie 4, 00-478 Warsaw, Poland; Astronomical Institute, University of Wrocław , Mikołaja Kopernika 11, 51-622 Wrocław, PolandMax-Planck-Institut für Sonnensystemforschung , Justus-von-Liebig-Weg 3, D-37077 Göttingen, Germany ; jiangc@mps.mpg.de; Instituto de Astrofísica e Ciências do Espaço, Universidade do Porto , Rua das Estrelas, 4150-762 Porto, PortugalInstituto de Astrofísica e Ciências do Espaço, Universidade do Porto , Rua das Estrelas, 4150-762 Porto, Portugal; Departamento de Física e Astronomia, Faculdade de Ciências da Universidade do Porto , Rua do Campo Alegre, s/n, 4169-007 Porto, PortugalInstituto de Astrofísica e Ciências do Espaço, Universidade do Porto , Rua das Estrelas, 4150-762 Porto, PortugalDepartment of Earth and Planetary Sciences, University of California , Riverside, CA 92521, USADepartment of Astronomy, Yale University , P.O. Box 208101, New Haven, CT 06520-8101, USADepartment of Astronomy and Space Sciences, Science Faculty, Ege University , 35100, Bornova, İzmir, TürkiyeDepartment of Astronomy and Space Sciences, Science Faculty, Erciyes University , 38030, Melikgazi, Kayseri, TürkiyeDepartment of Astronomy and Space Sciences, Science Faculty, Ege University , 35100, Bornova, İzmir, TürkiyeDepartment of Astronomy and Space Sciences, Science Faculty, Ege University , 35100, Bornova, İzmir, TürkiyeState Key Laboratory of Lunar and Planetary Sciences, Macau University of Science and Technology , Macau, People’s Republic of ChinaInstituto de Astrofísica e Ciências do Espaço, Universidade do Porto , Rua das Estrelas, 4150-762 Porto, Portugal; Departamento de Física e Astronomia, Faculdade de Ciências da Universidade do Porto , Rua do Campo Alegre, s/n, 4169-007 Porto, PortugalDepartamento de Fisica, Universidade Federal do Rio Grande do Norte , 59072-970 Natal, RN, Brazil; Instituto Federal do Rio Grande do Norte-IFRN , Mossoró - RN, 59628-330, BrazilMax-Planck-Institut für Sonnensystemforschung , Justus-von-Liebig-Weg 3, D-37077 Göttingen, Germany ; jiangc@mps.mpg.deInstitute for Astronomy, University of Hawai’i , 2680 Woodlawn Drive, Honolulu, HI 96822, USASchool of Physics and Electromechanical Engineering, Shaoguan University , 512005 Shaoguan, Guangdong Province, People's Republic of ChinaUniversity of Southern Queensland , Centre for Astrophysics, USQ Toowoomba, QLD 4350, AustraliaMax-Planck-Institut für Sonnensystemforschung , Justus-von-Liebig-Weg 3, D-37077 Göttingen, Germany ; jiangc@mps.mpg.de; Institut für Astrophysik, Georg-August-Universität Göttingen , Friedrich-Hund-Platz 1, D-37077 Göttingen, Germany; Center for Space Science, NYUAD Institute, New York University Abu Dhabi , Abu Dhabi, UAEStellar Astrophysics Centre (SAC), Department of Physics and Astronomy, Aarhus University , Ny Munkegade 120, DK-8000 Aarhus C, Denmark; School of Physics and Astronomy, University of Birmingham , Birmingham B15 2TT, UKThe Transiting Exoplanet Survey Satellite (TESS) mission searches for new exoplanets. The observing strategy of TESS results in high-precision photometry of millions of stars across the sky, allowing for detailed asteroseismic studies of individual systems. In this work, we present a detailed asteroseismic analysis of the giant star HD 76920 hosting a highly eccentric giant planet ( e = 0.878) with an orbital period of 415 days, using five sectors of TESS light curve that cover around 140 days of data. Solar-like oscillations in HD 76920 are detected around 52 μ Hz by TESS for the first time. By utilizing asteroseismic modeling that takes classical observational parameters and stellar oscillation frequencies as constraints, we determine improved measurements of the stellar mass (1.22 ± 0.11 M _⊙ ), radius (8.68 ± 0.34 R _☉ ), and age (5.2 ± 1.4 Gyr). With the updated parameters of the host star, we update the semimajor axis and mass of the planet as a = 1.165 ± 0.035 au and ${M}_{{\rm{p}}}\sin i=3.57\pm 0.22\,{M}_{\mathrm{Jup}}$ . With an orbital pericenter of 0.142 ± 0.005 au, we confirm that the planet is currently far away enough from the star to experience negligible tidal decay until being engulfed in the stellar envelope. We also confirm that this event will occur within about 100 Myr, depending on the stellar model used.https://doi.org/10.3847/1538-4357/acb8acAsteroseismologyExoplanetsRed giant stars |
| spellingShingle | Chen Jiang Tao Wu Adina D. Feinstein Keivan G. Stassun Timothy R. Bedding Dimitri Veras Enrico Corsaro Derek L. Buzasi Dennis Stello Yaguang Li Savita Mathur Rafael A. García Sylvain N. Breton Mia S. Lundkvist Przemysław J. Mikołajczyk Charlotte Gehan Tiago L. Campante Diego Bossini Stephen R. Kane Jia Mian Joel Ong Mutlu Yıldız Cenk Kayhan Zeynep Çelik Orhan Sibel Örtel Xinyi Zhang Margarida S. Cunha Bruno Lustosa de Moura Jie Yu Daniel Huber Jian-wen Ou Robert A. Wittenmyer Laurent Gizon William J. Chaplin TESS Asteroseismic Analysis of HD 76920: The Giant Star Hosting an Extremely Eccentric Exoplanet The Astrophysical Journal Asteroseismology Exoplanets Red giant stars |
| title | TESS Asteroseismic Analysis of HD 76920: The Giant Star Hosting an Extremely Eccentric Exoplanet |
| title_full | TESS Asteroseismic Analysis of HD 76920: The Giant Star Hosting an Extremely Eccentric Exoplanet |
| title_fullStr | TESS Asteroseismic Analysis of HD 76920: The Giant Star Hosting an Extremely Eccentric Exoplanet |
| title_full_unstemmed | TESS Asteroseismic Analysis of HD 76920: The Giant Star Hosting an Extremely Eccentric Exoplanet |
| title_short | TESS Asteroseismic Analysis of HD 76920: The Giant Star Hosting an Extremely Eccentric Exoplanet |
| title_sort | tess asteroseismic analysis of hd 76920 the giant star hosting an extremely eccentric exoplanet |
| topic | Asteroseismology Exoplanets Red giant stars |
| url | https://doi.org/10.3847/1538-4357/acb8ac |
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