Nikoleta Ilić, Katja Poppenhaeger, Anna Barbara Queiroz, Cristina Chiappini
{"title":"从行星诱发的恒星自旋推测恒星潮汐质量因子","authors":"Nikoleta Ilić, Katja Poppenhaeger, Anna Barbara Queiroz, Cristina Chiappini","doi":"10.1002/asna.20230132","DOIUrl":null,"url":null,"abstract":"<p>The dynamical evolution of tight star-planet systems is influenced by tidal interactions between the star and the planet, as was shown recently. The rate at which spins and orbits in such a system evolve depends on the stellar and planetary tidal dissipation efficiency. Here, we present a method to constrain the modified tidal quality factor <span></span><math>\n <semantics>\n <mrow>\n <msubsup>\n <mi>Q</mi>\n <mo>*</mo>\n <mo>′</mo>\n </msubsup>\n </mrow>\n <annotation>$$ {Q}_{\\ast}^{\\prime } $$</annotation>\n </semantics></math> of a planet-hosting star whose rotational evolution has been altered by its planet through angular momentum transfer from the planetary orbital motion to the rotation of the stellar convective zone. The altered rotation is estimated from an observed discrepancy of magnetic activity of the planet-hosting star and a coeval companion star, that is, this method is applicable to star-planet systems with wide stellar companions. We give an example of the planet-hosting wide binary system HD189733 and find that the planet host's modified tidal quality factor is constrained to be <span></span><math>\n <semantics>\n <mrow>\n <msubsup>\n <mi>Q</mi>\n <mo>*</mo>\n <mo>′</mo>\n </msubsup>\n <mo>≤</mo>\n <mn>2.33</mn>\n <mo>×</mo>\n <msup>\n <mn>10</mn>\n <mn>7</mn>\n </msup>\n </mrow>\n <annotation>$$ {Q}_{\\ast}^{\\prime}\\le 2.33\\times {10}^7 $$</annotation>\n </semantics></math>.</p>","PeriodicalId":55442,"journal":{"name":"Astronomische Nachrichten","volume":"345 5","pages":""},"PeriodicalIF":1.1000,"publicationDate":"2024-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/asna.20230132","citationCount":"0","resultStr":"{\"title\":\"Constraining stellar tidal quality factors from planet-induced stellar spin-up\",\"authors\":\"Nikoleta Ilić, Katja Poppenhaeger, Anna Barbara Queiroz, Cristina Chiappini\",\"doi\":\"10.1002/asna.20230132\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The dynamical evolution of tight star-planet systems is influenced by tidal interactions between the star and the planet, as was shown recently. The rate at which spins and orbits in such a system evolve depends on the stellar and planetary tidal dissipation efficiency. Here, we present a method to constrain the modified tidal quality factor <span></span><math>\\n <semantics>\\n <mrow>\\n <msubsup>\\n <mi>Q</mi>\\n <mo>*</mo>\\n <mo>′</mo>\\n </msubsup>\\n </mrow>\\n <annotation>$$ {Q}_{\\\\ast}^{\\\\prime } $$</annotation>\\n </semantics></math> of a planet-hosting star whose rotational evolution has been altered by its planet through angular momentum transfer from the planetary orbital motion to the rotation of the stellar convective zone. The altered rotation is estimated from an observed discrepancy of magnetic activity of the planet-hosting star and a coeval companion star, that is, this method is applicable to star-planet systems with wide stellar companions. We give an example of the planet-hosting wide binary system HD189733 and find that the planet host's modified tidal quality factor is constrained to be <span></span><math>\\n <semantics>\\n <mrow>\\n <msubsup>\\n <mi>Q</mi>\\n <mo>*</mo>\\n <mo>′</mo>\\n </msubsup>\\n <mo>≤</mo>\\n <mn>2.33</mn>\\n <mo>×</mo>\\n <msup>\\n <mn>10</mn>\\n <mn>7</mn>\\n </msup>\\n </mrow>\\n <annotation>$$ {Q}_{\\\\ast}^{\\\\prime}\\\\le 2.33\\\\times {10}^7 $$</annotation>\\n </semantics></math>.</p>\",\"PeriodicalId\":55442,\"journal\":{\"name\":\"Astronomische Nachrichten\",\"volume\":\"345 5\",\"pages\":\"\"},\"PeriodicalIF\":1.1000,\"publicationDate\":\"2024-04-30\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://onlinelibrary.wiley.com/doi/epdf/10.1002/asna.20230132\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Astronomische Nachrichten\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1002/asna.20230132\",\"RegionNum\":4,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"ASTRONOMY & ASTROPHYSICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Astronomische Nachrichten","FirstCategoryId":"101","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/asna.20230132","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ASTRONOMY & ASTROPHYSICS","Score":null,"Total":0}
Constraining stellar tidal quality factors from planet-induced stellar spin-up
The dynamical evolution of tight star-planet systems is influenced by tidal interactions between the star and the planet, as was shown recently. The rate at which spins and orbits in such a system evolve depends on the stellar and planetary tidal dissipation efficiency. Here, we present a method to constrain the modified tidal quality factor of a planet-hosting star whose rotational evolution has been altered by its planet through angular momentum transfer from the planetary orbital motion to the rotation of the stellar convective zone. The altered rotation is estimated from an observed discrepancy of magnetic activity of the planet-hosting star and a coeval companion star, that is, this method is applicable to star-planet systems with wide stellar companions. We give an example of the planet-hosting wide binary system HD189733 and find that the planet host's modified tidal quality factor is constrained to be .
期刊介绍：
Astronomische Nachrichten, founded in 1821 by H. C. Schumacher, is the oldest astronomical journal worldwide still being published. Famous astronomical discoveries and important papers on astronomy and astrophysics published in more than 300 volumes of the journal give an outstanding representation of the progress of astronomical research over the last 180 years. Today, Astronomical Notes/ Astronomische Nachrichten publishes articles in the field of observational and theoretical astrophysics and related topics in solar-system and solar physics. Additional, papers on astronomical instrumentation ground-based and space-based as well as papers about numerical astrophysical techniques and supercomputer modelling are covered. Papers can be completed by short video sequences in the electronic version. Astronomical Notes/ Astronomische Nachrichten also publishes special issues of meeting proceedings.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
