ASTEROSEISMIC DETERMINATION OF OBLIQUITIES OF THE EXOPLANET SYSTEMS KEPLER-50 AND KEPLER-65
Results on the obliquity of exoplanet host stars—the angle between the stellar spin axis and the planetary orbital axis—provide important diagnostic information for theories describing planetary formation. Here we present the first application of asteroseismology to the problem of stellar obliquity...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | en_US |
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IOP Publishing
2014
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| Online Access: | http://hdl.handle.net/1721.1/89201 https://orcid.org/0000-0002-4265-047X |
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| author | Chaplin, William J. Campante, T. L. Handberg, R. Stello, D. Basu, S. Christensen-Dalsgaard, J. Davies, Guy R. Metcalfe, T. S. Buchhave, Lars A. Fischer, Debra A. Bedding, Timothy R. Cochran, William D. Elsworth, Y. Gilliland, Ronald L. Hekker, Saskia Huber, Daniel Isaacson, Howard Karoff, C. Kawaler, S. D. Kjeldsen, H. Latham, David W. Lund, Mikkel N. Lundkvist, M. Marcy, Geoffrey W. Miglio, A. Barclay, Thomas Lissauer, Jack J. Sanchis Ojeda, Roberto Winn, Joshua Nathan |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Chaplin, William J. Campante, T. L. Handberg, R. Stello, D. Basu, S. Christensen-Dalsgaard, J. Davies, Guy R. Metcalfe, T. S. Buchhave, Lars A. Fischer, Debra A. Bedding, Timothy R. Cochran, William D. Elsworth, Y. Gilliland, Ronald L. Hekker, Saskia Huber, Daniel Isaacson, Howard Karoff, C. Kawaler, S. D. Kjeldsen, H. Latham, David W. Lund, Mikkel N. Lundkvist, M. Marcy, Geoffrey W. Miglio, A. Barclay, Thomas Lissauer, Jack J. Sanchis Ojeda, Roberto Winn, Joshua Nathan |
| author_sort | Chaplin, William J. |
| collection | MIT |
| description | Results on the obliquity of exoplanet host stars—the angle between the stellar spin axis and the planetary orbital axis—provide important diagnostic information for theories describing planetary formation. Here we present the first application of asteroseismology to the problem of stellar obliquity determination in systems with transiting planets and Sun-like host stars. We consider two systems observed by the NASA Kepler mission which have multiple transiting small (super-Earth sized) planets: the previously reported Kepler-50 and a new system, Kepler-65, whose planets we validate in this paper. Both stars show rich spectra of solar-like oscillations. From the asteroseismic analysis we find that each host has its rotation axis nearly perpendicular to the line of sight with the sines of the angles constrained at the 1σ level to lie above 0.97 and 0.91, respectively. We use statistical arguments to show that coplanar orbits are favored in both systems, and that the orientations of the planetary orbits and the stellar rotation axis are correlated. |
| first_indexed | 2024-09-23T09:16:36Z |
| format | Article |
| id | mit-1721.1/89201 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T09:16:36Z |
| publishDate | 2014 |
| publisher | IOP Publishing |
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| spelling | mit-1721.1/892012022-09-30T14:08:44Z ASTEROSEISMIC DETERMINATION OF OBLIQUITIES OF THE EXOPLANET SYSTEMS KEPLER-50 AND KEPLER-65 Chaplin, William J. Campante, T. L. Handberg, R. Stello, D. Basu, S. Christensen-Dalsgaard, J. Davies, Guy R. Metcalfe, T. S. Buchhave, Lars A. Fischer, Debra A. Bedding, Timothy R. Cochran, William D. Elsworth, Y. Gilliland, Ronald L. Hekker, Saskia Huber, Daniel Isaacson, Howard Karoff, C. Kawaler, S. D. Kjeldsen, H. Latham, David W. Lund, Mikkel N. Lundkvist, M. Marcy, Geoffrey W. Miglio, A. Barclay, Thomas Lissauer, Jack J. Sanchis Ojeda, Roberto Winn, Joshua Nathan Massachusetts Institute of Technology. Department of Physics MIT Kavli Institute for Astrophysics and Space Research Sanchis Ojeda, Roberto Winn, Joshua Nathan Results on the obliquity of exoplanet host stars—the angle between the stellar spin axis and the planetary orbital axis—provide important diagnostic information for theories describing planetary formation. Here we present the first application of asteroseismology to the problem of stellar obliquity determination in systems with transiting planets and Sun-like host stars. We consider two systems observed by the NASA Kepler mission which have multiple transiting small (super-Earth sized) planets: the previously reported Kepler-50 and a new system, Kepler-65, whose planets we validate in this paper. Both stars show rich spectra of solar-like oscillations. From the asteroseismic analysis we find that each host has its rotation axis nearly perpendicular to the line of sight with the sines of the angles constrained at the 1σ level to lie above 0.97 and 0.91, respectively. We use statistical arguments to show that coplanar orbits are favored in both systems, and that the orientations of the planetary orbits and the stellar rotation axis are correlated. United States. National Aeronautics and Space Administration (Kepler Participating Scientist Program Grant NNX12AC76G) 2014-09-05T15:05:21Z 2014-09-05T15:05:21Z 2013-03 2012-11 Article http://purl.org/eprint/type/JournalArticle 0004-637X 1538-4357 http://hdl.handle.net/1721.1/89201 Chaplin, W. J., R. Sanchis-Ojeda, T. L. Campante, R. Handberg, D. Stello, J. N. Winn, S. Basu, et al. “ASTEROSEISMIC DETERMINATION OF OBLIQUITIES OF THE EXOPLANET SYSTEMS KEPLER-50 AND KEPLER-65.” The Astrophysical Journal 766, no. 2 (March 14, 2013): 101. https://orcid.org/0000-0002-4265-047X en_US http://dx.doi.org/10.1088/0004-637x/766/2/101 The Astrophysical Journal Creative Commons Attribution-Noncommercial-Share Alike http://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf IOP Publishing arXiv |
| spellingShingle | Chaplin, William J. Campante, T. L. Handberg, R. Stello, D. Basu, S. Christensen-Dalsgaard, J. Davies, Guy R. Metcalfe, T. S. Buchhave, Lars A. Fischer, Debra A. Bedding, Timothy R. Cochran, William D. Elsworth, Y. Gilliland, Ronald L. Hekker, Saskia Huber, Daniel Isaacson, Howard Karoff, C. Kawaler, S. D. Kjeldsen, H. Latham, David W. Lund, Mikkel N. Lundkvist, M. Marcy, Geoffrey W. Miglio, A. Barclay, Thomas Lissauer, Jack J. Sanchis Ojeda, Roberto Winn, Joshua Nathan ASTEROSEISMIC DETERMINATION OF OBLIQUITIES OF THE EXOPLANET SYSTEMS KEPLER-50 AND KEPLER-65 |
| title | ASTEROSEISMIC DETERMINATION OF OBLIQUITIES OF THE EXOPLANET SYSTEMS KEPLER-50 AND KEPLER-65 |
| title_full | ASTEROSEISMIC DETERMINATION OF OBLIQUITIES OF THE EXOPLANET SYSTEMS KEPLER-50 AND KEPLER-65 |
| title_fullStr | ASTEROSEISMIC DETERMINATION OF OBLIQUITIES OF THE EXOPLANET SYSTEMS KEPLER-50 AND KEPLER-65 |
| title_full_unstemmed | ASTEROSEISMIC DETERMINATION OF OBLIQUITIES OF THE EXOPLANET SYSTEMS KEPLER-50 AND KEPLER-65 |
| title_short | ASTEROSEISMIC DETERMINATION OF OBLIQUITIES OF THE EXOPLANET SYSTEMS KEPLER-50 AND KEPLER-65 |
| title_sort | asteroseismic determination of obliquities of the exoplanet systems kepler 50 and kepler 65 |
| url | http://hdl.handle.net/1721.1/89201 https://orcid.org/0000-0002-4265-047X |
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