Asteroseismology of the Solar Analogs 16 Cyg A and B from Kepler Observations
| العنوان: | Asteroseismology of the Solar Analogs 16 Cyg A and B from Kepler Observations |
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| المؤلفون: | T. Stahn, S. Mathur, T. S. Metcalfe, J. Christensen-Dalsgaard, T. Appourchaux, Martin Still, H. M. Antia, R. L. Gilliland, B. Mosser, Guy R. Davies, G. Doğan, H. Kjeldsen, P. Eggenberger, D. Stello, Yvonne Elsworth, R. A. Garcia, O. L. Creevey, S. D. Kawaler, S. Basu, Andrea Miglio, Christoffer Karoff, William J. Chaplin, T. R. Bedding, S. T. Bryson, I. M. Brandão, D. Salabert, Mutlu Yildiz, S. Hekker, Laurent Gizon, Z. Celik, Clara Régulo, O. Benomar, Khadeejah A. Ibrahim, Todd C. Klaus, Jie Li, Sébastien Deheuvels, Roger T. Howe |
| المساهمون: | Joseph Louis LAGRANGE (LAGRANGE), Université Côte d'Azur (UCA)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Observatoire de la Côte d'Azur, Université Côte d'Azur (UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Ege Üniversitesi, Low Energy Astrophysics (API, FNWI) |
| المصدر: | The Astrophysical journal letters The Astrophysical journal letters, Bristol : IOP Publishing, 2012, 748, pp.L10. ⟨10.1088/2041-8205/748/1/l10⟩ Metcalfe, T S, Chaplin, W J, Appourchaux, T, García, R A, Basu, S, Brandão, I, Creevey, O L, Deheuvels, S, Doǧan, G, Eggenberger, P, Karoff, C, Miglio, A, Stello, D, Yıldız, M, Çelik, Z, Antia, H M, Benomar, O, Howe, R, Régulo, C, Salabert, D, Stahn, T, Bedding, T R, Davies, G R, Elsworth, Y, Gizon, L, Hekker, S, Mathur, S, Mosser, B, Bryson, S T, Still, M D, Christensen-Dalsgaard, J, Gilliland, R L, Kawaler, S D, Kjeldsen, H, Ibrahim, K A, Klaus, T C & Li, J 2012, ' Asteroseismology of the Solar Analogs 16 Cyg A and B from Kepler Observations ', The Astrophysical Journal Letters, vol. 748, no. 1 . https://doi.org/10.1088/2041-8205/748/1/L10 Astrophysical Journal Letters, 748(1). IOP Publishing Ltd. \apjl |
| بيانات النشر: | HAL CCSD, 2012. |
| سنة النشر: | 2012 |
| مصطلحات موضوعية: | FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, stars: interiors, 01 natural sciences, 7. Clean energy, Asteroseismology, Photometry (optics), Spitzer Space Telescope, 0103 physical sciences, Differential rotation, Astrophysics::Solar and Stellar Astrophysics, 010303 astronomy & astrophysics, Stellar evolution, Solar and Stellar Astrophysics (astro-ph.SR), Astrophysics::Galaxy Astrophysics, ComputingMilieux_MISCELLANEOUS, Physics, Earth and Planetary Astrophysics (astro-ph.EP), 010308 nuclear & particles physics, Astronomy and Astrophysics, stars: solar-type, Orbital period, Stars, Astrophysics - Solar and Stellar Astrophysics, Convection zone, 13. Climate action, Space and Planetary Science, stars: individual (HD 186408, HD 186427), stars: fundamental parameters, stars: oscillations, Astrophysics::Earth and Planetary Astrophysics, Astrophysics - Earth and Planetary Astrophysics |
| الوصف: | WOS: 000301297500010 The evolved solar-type stars 16 Cyg A and B have long been studied as solar analogs, yielding a glimpse into the future of our own Sun. The orbital period of the binary system is too long to provide meaningful dynamical constraints on the stellar properties, but asteroseismology can help because the stars are among the brightest in the Kepler field. We present an analysis of three months of nearly uninterrupted photometry of 16 Cyg A and B from the Kepler space telescope. We extract a total of 46 and 41 oscillation frequencies for the two components, respectively, including a clear detection of octupole (l = 3) modes in both stars. We derive the properties of each star independently using the Asteroseismic Modeling Portal, fitting the individual oscillation frequencies and other observational constraints simultaneously. We evaluate the systematic uncertainties from an ensemble of results generated by a variety of stellar evolution codes and fitting methods. The optimal models derived by fitting each component individually yield a common age (t = 6.8 +/- 0.4 Gyr) and initial composition (Z(i) = 0.024 +/- 0.002, Y-i = 0.25 +/- 0.01) within the uncertainties, as expected for the components of a binary system, bolstering our confidence in the reliability of asteroseismic techniques. The longer data sets that will ultimately become available will allow future studies of differential rotation, convection zone depths, and long-term changes due to stellar activity cycles. NASA's Science Mission Directorate; NASANational Aeronautics & Space Administration (NASA) [NNX09AE59G]; National Science FoundationNational Science Foundation (NSF) [NSF PHY05-51164]; Science and Technology Facilities CouncilScience & Technology Facilities Council (STFC) [ST/J001163/1] Funding for this Discovery mission is provided by NASA's Science Mission Directorate. This work was supported in part by NASA grant NNX09AE59G. Computational time on Kraken at the National Institute of Computational Sciences was provided through NSF TeraGrid allocation TG-AST090107. We acknowledge the KITP staff at UCSB for their warm hospitality during the research program "Asteroseismology in the Space Age." This research was supported in part by the National Science Foundation under Grant No. NSF PHY05-51164. The authors thank Jeff Hall, Todd Henry, Dave Soderblom, and Russel White for helpful discussions, as well as the entire Kepler team, without whom these results would not be possible. We also thank all funding councils and agencies that have supported the activities of the Kepler Asteroseismic Science Consortium Working Group 1, including the Pale Blue Dot Project hosted by White Dwarf Research Corporation (http://whitedwarf.org/palebluedot/). |
| اللغة: | English |
| تدمد: | 2041-8205 2041-8213 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::264fa39ba02135eb8129ee296934546d https://hal.archives-ouvertes.fr/hal-00722069 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....264fa39ba02135eb8129ee296934546d |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 20418205 20418213 |
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