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| Indexado |
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| DOI | 10.3847/1538-3881/AB24BA | ||||
| Año | 2019 | ||||
| Tipo | artículo de investigación |
Citas Totales
Autores Afiliación Chile
Instituciones Chile
% Participación
Internacional
Autores
Afiliación Extranjera
Instituciones
Extranjeras
Warm, large exoplanets with 10-100 day orbital periods pose a major challenge to our understanding of how planetary systems form and evolve. Although high eccentricity tidal migration has been invoked to explain their proximity to their host stars, a handful reside in or near orbital resonance with nearby planets, suggesting a gentler history of in situ formation or disk migration. Here we confirm and characterize a pair of warm, large exoplanets discovered by the TESS Mission orbiting K-dwarf TOI-216. Our analysis includes additional transits and transit exclusion windows observed via ground-based follow-up. We find two families of solutions, one corresponding to a sub-Saturn-mass planet accompanied by a Neptune-mass planet and the other to a Jupiter in resonance with a sub-Saturn-mass planet. We prefer the second solution based on the orbital period ratio, the planet radii, the lower free eccentricities, and libration of the 2:1 resonant argument, but cannot rule out the first. The free eccentricities and mutual inclination are compatible with stirring by other, undetected planets in the system, particularly for the second solution. We discuss prospects for better constraints on the planets' properties and orbits through follow-up, including transits observed from the ground.
| Ord. | Autor | Género | Institución - País |
|---|---|---|---|
| 1 | Dawson, Rebekah | Mujer |
PENN STATE UNIV - Estados Unidos
Pennsylvania State University - Estados Unidos |
| 2 | Huang, Chelsea X. | Mujer |
MIT - Estados Unidos
MIT Kavli Institute for Astrophysics and Space Research - Estados Unidos Massachusetts Institute of Technology - Estados Unidos |
| 3 | Lissauer, Jack J. | Hombre |
NASA - Estados Unidos
NASA Ames Research Center - Estados Unidos |
| 4 | Pearce, Logan | Hombre |
Harvard Smithsonian Ctr Astrophys - Estados Unidos
Vanderbilt Univ - Estados Unidos Harvard-Smithsonian Center for Astrophysics - Estados Unidos Vanderbilt University - Estados Unidos |
| 5 | Sha, Lizhou | - |
MIT - Estados Unidos
MIT Kavli Institute for Astrophysics and Space Research - Estados Unidos Massachusetts Institute of Technology - Estados Unidos |
| 6 | Armstrong, James | Hombre |
Univ Hawaii - Estados Unidos
University of Hawaii Institute for Astronomy - Estados Unidos University of Hawaiʻi System - Estados Unidos University Hawaii Institute for Astronomy - Estados Unidos |
| 7 | Conti, Dennis M. | Hombre |
Amer Assoc Variable Star Observers - Estados Unidos
American Association of Variable Star Observers - Estados Unidos |
| 8 | Pearce, Logan | Hombre |
Harvard Smithsonian Ctr Astrophys - Estados Unidos
Vanderbilt Univ - Estados Unidos Harvard-Smithsonian Center for Astrophysics - Estados Unidos Vanderbilt University - Estados Unidos |
| 9 | Evans, Phil | Hombre |
El Sauce Observ - Chile
El Sauce Observatory - Chile |
| 10 | Gan, Tianjun | - |
Tsinghua Univ - China
Tsinghua University - China |
| 11 | Horne, Keith | Hombre |
Univ St Andrews - Reino Unido
University of St Andrews - Reino Unido |
| 12 | Ireland, Michael J. | Hombre |
Australian Natl Univ - Australia
Australian National University - Australia The Australian National University - Australia |
| 13 | Murgas, Felipe | Hombre |
IAC - España
ULL - España Instituto Astrofisico de Canarias - España Universidad de La Laguna - España |
| 14 | Myers, Gordon | Hombre |
AAVSO - Reino Unido
AAVSO - Estados Unidos |
| 15 | Relles, Howard M. | Hombre |
Harvard Smithsonian Ctr Astrophys - Estados Unidos
Harvard-Smithsonian Center for Astrophysics - Estados Unidos |
| 16 | Baran, Andrzej S. | Hombre |
South African Astron Observ - República de Sudáfrica
South African Astronomical Observatory - República de Sudáfrica |
| 17 | Shporer, Avi | - |
MIT - Estados Unidos
MIT Kavli Institute for Astrophysics and Space Research - Estados Unidos Massachusetts Institute of Technology - Estados Unidos |
| 18 | Stockdale, Chris | Hombre |
Hazelwood Observ - Australia
Hazelwood Observatory - Australia |
| 19 | Zerjal, M. | Mujer |
Australian Natl Univ - Australia
Australian National University - Australia The Australian National University - Australia |
| 20 | Zhou, George | Hombre |
Harvard Smithsonian Ctr Astrophys - Estados Unidos
Harvard-Smithsonian Center for Astrophysics - Estados Unidos |
| 21 | Ricker, George R. | Hombre |
MIT - Estados Unidos
MIT Kavli Institute for Astrophysics and Space Research - Estados Unidos Massachusetts Institute of Technology - Estados Unidos |
| 22 | Vanderspek, R. | Hombre |
MIT - Estados Unidos
MIT Kavli Institute for Astrophysics and Space Research - Estados Unidos Massachusetts Institute of Technology - Estados Unidos |
| 23 | Latham, David W. | Hombre |
Harvard Smithsonian Ctr Astrophys - Estados Unidos
Harvard-Smithsonian Center for Astrophysics - Estados Unidos |
| 24 | Stalport, M. | Hombre |
MIT - Estados Unidos
MIT Kavli Institute for Astrophysics and Space Research - Estados Unidos Massachusetts Institute of Technology - Estados Unidos MIT School of Engineering - Estados Unidos |
| 25 | Hart, R. | Hombre |
Princeton Univ - Estados Unidos
Princeton University - Estados Unidos |
| 26 | JENKINS, JAMES STEWART | Hombre |
NASA - Estados Unidos
NASA Ames Research Center - Estados Unidos |
| 27 | Bouma, L. G. | Hombre |
Princeton Univ - Estados Unidos
Princeton University - Estados Unidos |
| 28 | Caldwell, Douglas A. | Hombre |
NASA - Estados Unidos
SETI Inst - Estados Unidos NASA Ames Research Center - Estados Unidos SETI Institute - Estados Unidos |
| 29 | Daylan, Tansu | - |
MIT - Estados Unidos
MIT Kavli Institute for Astrophysics and Space Research - Estados Unidos Massachusetts Institute of Technology - Estados Unidos |
| 30 | Doty, John P. | Hombre |
Noqsi Aerosp Ltd - Estados Unidos
Noqsi Aerospace - Estados Unidos |
| 31 | Dynes, Scott | Hombre |
MIT - Estados Unidos
MIT Kavli Institute for Astrophysics and Space Research - Estados Unidos Massachusetts Institute of Technology - Estados Unidos |
| 32 | Esquerdo, Gilbert | Hombre |
Harvard Smithsonian Ctr Astrophys - Estados Unidos
Harvard-Smithsonian Center for Astrophysics - Estados Unidos |
| 33 | Rose, Mark E. | Hombre |
NASA - Estados Unidos
NASA Ames Research Center - Estados Unidos |
| 34 | Smith, J. C. | Hombre |
NASA - Estados Unidos
SETI Inst - Estados Unidos NASA Ames Research Center - Estados Unidos SETI Institute - Estados Unidos |
| 35 | Yu, Liang | - |
MIT - Estados Unidos
MIT Kavli Institute for Astrophysics and Space Research - Estados Unidos Massachusetts Institute of Technology - Estados Unidos |
| Fuente |
|---|
| National Science Foundation |
| Australian Research Council |
| Vanderbilt University |
| NASA |
| STFC |
| Pennsylvania State University |
| Princeton University |
| Australian National University |
| Ames Research Center |
| Eberly College of Science |
| Pennsylvania Space Grant Consortium |
| Massachusetts Institute of Technology |
| Universidad de La Laguna |
| University of Hawai'i |
| Tsinghua University |
| Kavli Institute for Astrophysics and Space Research |
| Instituto de Astrofsica de Canarias |
| Nanjing University of Aeronautics and Astronautics |
| Secretário de Ciência, Tecnologia e Ensino Superior, Governo do Estado de Parana |
| Advanced Cardiac Therapeutics |
| Noqsi Aerospace Ltd |
| Agradecimiento |
|---|
| We gratefully acknowledge support by NASA XRP NNX16AB50G and NASA TESS GO 80NSSC18K1695. The Center for Exoplanets and Habitable Worlds is supported by the Pennsylvania State University, the Eberly College of Science, and the Pennsylvania Space Grant Consortium. T.D. acknowledges support from MIT's Kavli Institute as a Kavli postdoctoral fellow. K.H. acknowledges support from STFC grant ST/R000824/1. M.Z. acknowledges funding from the Australian Research Council (grant DP170102233). This research was supported in part by the National Science Foundation under Grant No. NSF PHY-1748958. |
| Rebekah I. Dawson Chelsea X. Huang Jack J. Lissauer Karen A. Collins Lizhou Sha James Armstrong Dennis M. Conti Kevin I. Collins Phil Evans Tianjun Gan Keith Horne Michael Ireland Felipe Murgas Gordon Myers Howard M. Relles Ramotholo Sefako Avi Shporer Chris Stockdale Maruša Žerjal George Zhou G. Ricker R. Vanderspek David W. Latham S. Seager J. Winn Jon M. Jenkins L. G. Bouma Douglas A. Caldwell Tansu Daylan John P. Doty Scott Dynes Gilbert A. Esquerdo Mark Rose Jeffrey C. Smith Liang Yu Rebekah I. Dawson Chelsea X. Huang Jack J. Lissauer Karen A. Collins Lizhou Sha James Armstrong Dennis M. Conti Kevin I. Collins Phil Evans Tianjun Gan Keith Horne Michael Ireland Felipe Murgas Gordon Myers Howard M. Relles Ramotholo Sefako Avi Shporer Chris Stockdale Maruša Žerjal George Zhou G. Ricker R. Vanderspek David W. Latham S. Seager J. Winn Jon M. Jenkins L. G. Bouma Douglas A. Caldwell Tansu Daylan John P. Doty Scott Dynes Gilbert A. Esquerdo Mark Rose Jeffrey C. Smith Liang Yu Department of Astronomy & Astrophysics, Center for Exoplanets and Habitable Worlds, The Pennsylvania State University, University Park, PA 16802, USA Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA NASA Ames Research Center, Moffett Field, CA 94035, USA Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA, 02138, USA University of Hawaii Institute for Astronomy, Pukalani, HI 96768, USA American Association of Variable Star Observers, 49 Bay State Road, Cambridge, MA 02138, USA Department of Physics and Astronomy, Vanderbilt University, Nashville, TN 37235, USA El Sauce Observatory, Coquimbo Province, Chile Physics Department and Tsinghua Centre for Astrophysics, Tsinghua University, Beijing 100084, People’s Republic of China SUPA Physics & Astronomy, University of St. Andrews, North Haugh, St. Andrews, KY16 9SS, Scotland, UK Research School of Astronomy and Astrophysics, Australian National University, Canberra, ACT 2611, Australia Instituto de Astrofsica de Canarias (IAC), E-38205 La Laguna, Tenerife, Spain Departamento de Astrofsica, Universidad de La Laguna (ULL), E-38206 La Laguna, Tenerife, Spain AAVSO, 5 Inverness Way, Hillsborough, CA 94010, USA South African Astronomical Observatory, PO Box 9, Observatory, 7935, South Africa Hazelwood Observatory, Australia Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, USA Department of Aeronautics and Astronautics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA Department of Astrophysical Sciences, Princeton University, 4 Ivy Lane, Princeton, NJ 08540, USA SETI Institute, Mountain View, CA 94043, USA Noqsi Aerospace Ltd., 2822 South Nova Road, Pine, CO 80470, USA Juan Carlos Torres Fellow. Kavli Fellow. Rebekah I. Dawson, Chelsea X. Huang, Jack J. Lissauer, Karen A. Collins, Lizhou Sha, James Armstrong, Dennis M. Conti, Kevin I. Collins, Phil Evans, Tianjun Gan, Keith Horne, Michael Ireland, Felipe Murgas, Gordon Myers, Howard M. Relles, Ramotholo Sefako, Avi Shporer, Chris Stockdale, Maruša Žerjal, George Zhou, G. Ricker, R. Vanderspek, David W. Latham, S. Seager, J. Winn, Jon M. Jenkins, L. G. Bouma, Douglas A. Caldwell, Tansu Daylan, John P. Doty, Scott Dynes, Gilbert A. Esquerdo, Mark Rose, Jeffrey C. Smith and Liang Yu 2019-08-01 2019-07-16 15:47:44 cgi/release: Article released bin/incoming: New from .zip yes Warm, large exoplanets with 10–100 day orbital periods pose a major challenge to our understanding of how planetary systems form and evolve. Although high eccentricity tidal migration has been invoked to explain their proximity to their host stars, a handful reside in or near orbital resonance with nearby planets, suggesting a gentler history of in situ formation or disk migration. Here we confirm and characterize a pair of warm, large exoplanets discovered by the TESS Mission orbiting K-dwarf TOI-216. Our analysis includes additional transits and transit exclusion windows observed via ground-based follow-up. We find two families of solutions, one corresponding to a sub-Saturn-mass planet accompanied by a Neptune-mass planet and the other to a Jupiter in resonance with a sub-Saturn-mass planet. We prefer the second solution based on the orbital period ratio, the planet radii, the lower free eccentricities, and libration of the 2:1 resonant argument, but cannot rule out the first. 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