A 20 Second Cadence View of Solar-type Stars and Their Planets with TESS: Asteroseismology of Solar Analogs and a Recharacterization of pi Men c | |
Huber, Daniel19; White, Timothy R.20,21; Metcalfe, Travis S.22; Chontos, Ashley19; Fausnaugh, Michael M.27; Ho, Cynthia S. K.28; Eylen, Vincent Van28; Ball, Warrick H.21,29; Basu, Sarbani30; Bedding, Timothy R.20,21 | |
刊名 | ASTRONOMICAL JOURNAL |
2022-02-01 | |
卷号 | 163期号:2 |
ISSN号 | 0004-6256 |
DOI | 10.3847/1538-3881/ac3000 |
产权排序 | 第28完成单位 |
文献子类 | Article |
英文摘要 | We present an analysis of the first 20 second cadence light curves obtained by the TESS space telescope during its extended mission. We find improved precision of 20 second data compared to 2 minute data for bright stars when binned to the same cadence (approximate to 10%-25% better for T less than or similar to 8 mag, reaching equal precision at T approximate to 13 mag), consistent with pre-flight expectations based on differences in cosmic-ray mitigation algorithms. We present two results enabled by this improvement. First, we use 20 second data to detect oscillations in three solar analogs (gamma Pav, zeta Tuc, and pi Men) and use asteroseismology to measure their radii, masses, densities, and ages to approximate to 1%, approximate to 3%, approximate to 1%, and approximate to 20% respectively, including systematic errors. Combining our asteroseismic ages with chromospheric activity measurements, we find evidence that the spread in the activity-age relation is linked to stellar mass and thus the depth of the convection zone. Second, we combine 20 second data and published radial velocities to recharacterize pi Men c, which is now the closest transiting exoplanet for which detailed asteroseismology of the host star is possible. We show that pi Men c is located at the upper edge of the planet radius valley for its orbital period, confirming that it has likely retained a volatile atmosphere and that the asteroseismic radius valley remains devoid of planets. Our analysis favors a low eccentricity for pi Men c (<0.1 at 68% confidence), suggesting efficient tidal dissipation (Q/k (2,1) less than or similar to 2400) if it formed via high-eccentricity migration. Combined, these early results demonstrate the strong potential of TESS 20 second cadence data for stellar astrophysics and exoplanet science. |
学科主题 | 天文学 ; 恒星与银河系 |
URL标识 | 查看原文 |
出版地 | TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND |
资助项目 | Alfred P. Sloan FoundationAlfred P. Sloan Foundation ; National Aeronautics and Space AdministrationNational Aeronautics & Space Administration (NASA)[80NSSC19K0379] ; National Aeronautics and Space AdministrationNational Aeronautics & Space Administration (NASA)[80NSSC21K0652] ; National Science FoundationNational Science Foundation (NSF)[AST-1717000] ; NASANational Aeronautics & Space Administration (NASA)[80NSSC20K0458] ; National Science Foundation through the Graduate Research Fellowship Program[DGE 1842402] ; Australian Research CouncilAustralian Research Council[DP210103119] ; Danish National Research FoundationDanmarks Grundforskningsfond[DNRF106] ; FCT/MCTESPortuguese Foundation for Science and TechnologyEuropean Commission[UIDB/04434/2020] ; FCT/MCTESPortuguese Foundation for Science and TechnologyEuropean Commission[UIDP/04434/2020] ; FCT/MCTESPortuguese Foundation for Science and TechnologyEuropean Commission[PTDC/FIS-AST/30389/2017] ; FEDER-Fundo Europeu de Desenvolvimento Regional through COMPETE2020-Programa Operacional Competitividade e Internacionalizacao[POCI-01-0145-FEDER-030389] ; Fundacao para a Ciencia e a Tecnologia (FCT)Portuguese Foundation for Science and TechnologyEuropean Commission[CEECIND/00476/2018] ; European Social Fund via the Lithuanian Science Council (LMTLT)Research Council of Lithuania (LMTLT)[09.3.3-LMT-K-712-01-0103] ; CNESCentre National D'etudes Spatiales ; PLATO grant ; GOLF grant ; Alexander von Humboldt FoundationAlexander von Humboldt Foundation ; Branco Weiss fellowship Science in Society through the SEISMIC stellar interior physics group ; Spanish Ministry of Science and InnovationSpanish Government ; Ramon y Cajal fellowshipSpanish Government[RYC-2015-17697] ; B-type Strategic Priority Program of the Chinese Academy of Sciences[XDB41000000] ; Youth Innovation Promotion Association of Chinese Academy of Sciences ; Ten Thousand Talents Program of Yunnan for Top-notch Young Talents ; NASA's Science Mission directorate ; Yunnan Observatories ; NASA High-End Computing (HEC) Program through the NASA Advanced Supercomputing (NAS) Division at Ames Research Center for the production of the SPOC data products ; [PID2019-107187GB-I00] |
WOS关键词 | SUPER-NYQUIST ASTEROSEISMOLOGY ; SPIN-ORBIT MISALIGNMENT ; EXOPLANET-HOST STAR ; POWERED MASS-LOSS ; OSCILLATION FREQUENCIES ; INITIAL CHARACTERISTICS ; FUNDAMENTAL PROPERTIES ; ROTATIONAL EVOLUTION ; MODE OSCILLATIONS ; MAGNETIC ACTIVITY |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | IOP Publishing Ltd |
WOS记录号 | WOS:000744650500001 |
资助机构 | Alfred P. Sloan FoundationAlfred P. Sloan Foundation ; National Aeronautics and Space AdministrationNational Aeronautics & Space Administration (NASA)[80NSSC19K0379, 80NSSC21K0652] ; National Science FoundationNational Science Foundation (NSF)[AST-1717000] ; NASANational Aeronautics & Space Administration (NASA)[80NSSC20K0458] ; National Science Foundation through the Graduate Research Fellowship Program[DGE 1842402] ; Australian Research CouncilAustralian Research Council[DP210103119] ; Danish National Research FoundationDanmarks Grundforskningsfond[DNRF106] ; FCT/MCTESPortuguese Foundation for Science and TechnologyEuropean Commission[UIDB/04434/2020, UIDP/04434/2020, PTDC/FIS-AST/30389/2017] ; FEDER-Fundo Europeu de Desenvolvimento Regional through COMPETE2020-Programa Operacional Competitividade e Internacionalizacao[POCI-01-0145-FEDER-030389] ; Fundacao para a Ciencia e a Tecnologia (FCT)Portuguese Foundation for Science and TechnologyEuropean Commission[CEECIND/00476/2018] ; European Social Fund via the Lithuanian Science Council (LMTLT)Research Council of Lithuania (LMTLT)[09.3.3-LMT-K-712-01-0103] ; CNESCentre National D'etudes Spatiales ; PLATO grant ; GOLF grant ; Alexander von Humboldt FoundationAlexander von Humboldt Foundation ; Branco Weiss fellowship Science in Society through the SEISMIC stellar interior physics group ; Spanish Ministry of Science and InnovationSpanish Government ; Ramon y Cajal fellowshipSpanish Government[RYC-2015-17697] ; B-type Strategic Priority Program of the Chinese Academy of Sciences[XDB41000000] ; Youth Innovation Promotion Association of Chinese Academy of Sciences ; Ten Thousand Talents Program of Yunnan for Top-notch Young Talents ; NASA's Science Mission directorate ; Yunnan Observatories ; NASA High-End Computing (HEC) Program through the NASA Advanced Supercomputing (NAS) Division at Ames Research Center for the production of the SPOC data products ; [PID2019-107187GB-I00] |
内容类型 | 期刊论文 |
版本 | 出版稿 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/24849] |
专题 | 云南天文台_恒星物理研究组 |
通讯作者 | Huber, Daniel |
作者单位 | 1.NASA Ames Research Center, Moffett Field, CA 94035, USA; 2.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing, 100012, People's Republic of China; 3.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; 4.Yunnan Observatories, Chinese Academy of Sciences, 396 Yangfangwang, Guandu District, Kunming, 650216, People's Republic of China; 5.School of Physics, The University of New South Wales, Sydney, NSW 2052, Australia; 6.Vanderbilt Initiative in Data-intensive Astrophysics (VIDA), 6301 Stevenson Center Lane, Nashville, TN 37235, USA; 7.Vanderbilt University, Department of Physics & Astronomy, 6301 Stevenson Center Lane, Nashville, TN 37235, USA; 8.Institut d'Estudis Espacials de Catalunya (IEEC), C/Gran Capita, 2-4, E-08034, Barcelona, Spain; 9.Department of Astrophysical Sciences, Princeton University, 4 Ivy Lane, Princeton, NJ 08544, USA 10.SETI Institute, 189 Bernardo Avenue, Suite 200, Mountain View, CA 94043, USA; |
推荐引用方式 GB/T 7714 | Huber, Daniel,White, Timothy R.,Metcalfe, Travis S.,et al. A 20 Second Cadence View of Solar-type Stars and Their Planets with TESS: Asteroseismology of Solar Analogs and a Recharacterization of pi Men c[J]. ASTRONOMICAL JOURNAL,2022,163(2). |
APA | Huber, Daniel.,White, Timothy R..,Metcalfe, Travis S..,Chontos, Ashley.,Fausnaugh, Michael M..,...&Winn, Joshua N..(2022).A 20 Second Cadence View of Solar-type Stars and Their Planets with TESS: Asteroseismology of Solar Analogs and a Recharacterization of pi Men c.ASTRONOMICAL JOURNAL,163(2). |
MLA | Huber, Daniel,et al."A 20 Second Cadence View of Solar-type Stars and Their Planets with TESS: Asteroseismology of Solar Analogs and a Recharacterization of pi Men c".ASTRONOMICAL JOURNAL 163.2(2022). |
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