TOI-1859b: A 64 Day Warm Jupiter on an Eccentric and Misaligned Orbit
Warm Jupiters are close-in giant planets with relatively large planet–star separations (i.e., 10 < a / R _⋆ < 100). Given their weak tidal interactions with their host stars, measurements of stellar obliquity may be used to probe the initial obliquity distribution and dynamical history for clo...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2023-01-01
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| Series: | The Astrophysical Journal Letters |
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| Online Access: | https://doi.org/10.3847/2041-8213/acd93d |
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| author | Jiayin Dong Songhu Wang Malena Rice George Zhou Chelsea X. Huang Rebekah I. Dawson Gudmundur K. Stefánsson Samuel Halverson Shubham Kanodia Suvrath Mahadevan Michael W. McElwain Jaime A. Alvarado-Montes Joe P. Ninan Paul Robertson Arpita Roy Christian Schwab Sarah E. Logsdon Ryan C. Terrien Karen A. Collins Gregor Srdoc Ramotholo Sefako Didier Laloum David W. Latham Allyson Bieryla Paul A. Dalba Diana Dragomir Steven Villanueva Jr. Steve B. Howell George R. Ricker S. Seager Joshua N. Winn Jon M. Jenkins Avi Shporer David Rapetti |
| author_facet | Jiayin Dong Songhu Wang Malena Rice George Zhou Chelsea X. Huang Rebekah I. Dawson Gudmundur K. Stefánsson Samuel Halverson Shubham Kanodia Suvrath Mahadevan Michael W. McElwain Jaime A. Alvarado-Montes Joe P. Ninan Paul Robertson Arpita Roy Christian Schwab Sarah E. Logsdon Ryan C. Terrien Karen A. Collins Gregor Srdoc Ramotholo Sefako Didier Laloum David W. Latham Allyson Bieryla Paul A. Dalba Diana Dragomir Steven Villanueva Jr. Steve B. Howell George R. Ricker S. Seager Joshua N. Winn Jon M. Jenkins Avi Shporer David Rapetti |
| author_sort | Jiayin Dong |
| collection | DOAJ |
| description | Warm Jupiters are close-in giant planets with relatively large planet–star separations (i.e., 10 < a / R _⋆ < 100). Given their weak tidal interactions with their host stars, measurements of stellar obliquity may be used to probe the initial obliquity distribution and dynamical history for close-in gas giants. Using spectroscopic observations, we confirm the planetary nature of TOI-1859b and determine the stellar obliquity of TOI-1859 to be λ = 38.9 ${}_{-2.7}^{+2.8}$ ° relative to its planetary companion using the Rossiter–McLaughlin effect. TOI-1859b is a 64 day warm Jupiter orbiting around a late F dwarf and has an orbital eccentricity of 0.57 ${}_{-0.16}^{+0.12}$ inferred purely from transit light curves. The eccentric and misaligned orbit of TOI-1859b is likely an outcome of dynamical interactions, such as planet–planet scattering and planet–disk resonance crossing. |
| first_indexed | 2024-03-12T03:51:40Z |
| format | Article |
| id | doaj.art-89b607cfcd604f4182b3c3f642d8430b |
| institution | Directory Open Access Journal |
| issn | 2041-8205 |
| language | English |
| last_indexed | 2024-03-12T03:51:40Z |
| publishDate | 2023-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal Letters |
| spelling | doaj.art-89b607cfcd604f4182b3c3f642d8430b2023-09-03T12:20:53ZengIOP PublishingThe Astrophysical Journal Letters2041-82052023-01-019512L2910.3847/2041-8213/acd93dTOI-1859b: A 64 Day Warm Jupiter on an Eccentric and Misaligned OrbitJiayin Dong0https://orcid.org/0000-0002-3610-6953Songhu Wang1https://orcid.org/0000-0002-7846-6981Malena Rice2https://orcid.org/0000-0002-7670-670XGeorge Zhou3https://orcid.org/0000-0002-4891-3517Chelsea X. Huang4https://orcid.org/0000-0003-0918-7484Rebekah I. Dawson5https://orcid.org/0000-0001-9677-1296Gudmundur K. Stefánsson6https://orcid.org/0000-0001-7409-5688Samuel Halverson7https://orcid.org/0000-0003-1312-9391Shubham Kanodia8https://orcid.org/0000-0001-8401-4300Suvrath Mahadevan9https://orcid.org/0000-0001-9596-7983Michael W. McElwain10https://orcid.org/0000-0003-0241-8956Jaime A. Alvarado-Montes11https://orcid.org/0000-0003-0353-9741Joe P. Ninan12https://orcid.org/0000-0001-8720-5612Paul Robertson13https://orcid.org/0000-0003-0149-9678Arpita Roy14https://orcid.org/0000-0001-8127-5775Christian Schwab15https://orcid.org/0000-0002-4046-987XSarah E. Logsdon16https://orcid.org/0000-0002-9632-9382Ryan C. Terrien17https://orcid.org/0000-0002-4788-8858Karen A. Collins18https://orcid.org/0000-0001-6588-9574Gregor Srdoc19Ramotholo Sefako20https://orcid.org/0000-0003-3904-6754Didier Laloum21David W. Latham22https://orcid.org/0000-0001-9911-7388Allyson Bieryla23https://orcid.org/0000-0001-6637-5401Paul A. Dalba24https://orcid.org/0000-0002-4297-5506Diana Dragomir25https://orcid.org/0000-0003-2313-467XSteven Villanueva Jr.26https://orcid.org/0000-0001-6213-8804Steve B. Howell27https://orcid.org/0000-0002-2532-2853George R. Ricker28https://orcid.org/0000-0003-2058-6662S. Seager29https://orcid.org/0000-0002-6892-6948Joshua N. Winn30https://orcid.org/0000-0002-4265-047XJon M. Jenkins31https://orcid.org/0000-0002-4715-9460Avi Shporer32https://orcid.org/0000-0002-1836-3120David Rapetti33https://orcid.org/0000-0003-2196-6675Center for Computational Astrophysics, Flatiron Institute , 162 Fifth Avenue, New York, NY 10010, USA ; jdong@flatironinstitute.org; Department of Astronomy & Astrophysics, 525 Davey Laboratory, The Pennsylvania State University , University Park, PA 16802, USA; Center for Exoplanets and Habitable Worlds, 525 Davey Laboratory, The Pennsylvania State University , University Park, PA 16802, USADepartment of Astronomy, Indiana University , Bloomington, IN 47405, USADepartment of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology , Cambridge, MA 02139, USA; Department of Astronomy, Yale University , New Haven, CT 06511, USAUniversity of Southern Queensland , Centre for Astrophysics, West Street, Toowoomba, QLD 4350, AustraliaUniversity of Southern Queensland , Centre for Astrophysics, West Street, Toowoomba, QLD 4350, AustraliaDepartment of Astronomy & Astrophysics, 525 Davey Laboratory, The Pennsylvania State University , University Park, PA 16802, USA; Center for Exoplanets and Habitable Worlds, 525 Davey Laboratory, The Pennsylvania State University , University Park, PA 16802, USADepartment of Astrophysical Sciences, Princeton University , 4 Ivy Lane, Princeton, NJ 08540, USAJet Propulsion Laboratory, California Institute of Technology , 4800 Oak Grove Drive, Pasadena, CA 91109, USAEarth and Planets Laboratory, Carnegie Institution for Science , 5241 Broad Branch Road, NW, Washington, DC 20015, USADepartment of Astronomy & Astrophysics, 525 Davey Laboratory, The Pennsylvania State University , University Park, PA 16802, USA; Center for Exoplanets and Habitable Worlds, 525 Davey Laboratory, The Pennsylvania State University , University Park, PA 16802, USA; ETH Zurich, Institute for Particle Physics & Astrophysics, Zurich, SwitzerlandExoplanets and Stellar Astrophysics Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USASchool of Mathematical and Physical Sciences, Macquarie University , Balaclava Road, North Ryde, NSW 2109, Australia; Research Centre for Astronomy, Astrophysics and Astrophotonics, Macquarie University , Balaclava Road, North Ryde, NSW 2109, AustraliaDepartment of Astronomy & Astrophysics, 525 Davey Laboratory, The Pennsylvania State University , University Park, PA 16802, USA; Center for Exoplanets and Habitable Worlds, 525 Davey Laboratory, The Pennsylvania State University , University Park, PA 16802, USADepartment of Physics & Astronomy, The University of California , Irvine, Irvine, CA 92697, USASpace Telescope Science Institute , 3700 San Martin Drive, Baltimore, MD 21218, USA; Department of Physics and Astronomy, Johns Hopkins University , 3400 N Charles Street, Baltimore, MD 21218, USASchool of Mathematical and Physical Sciences, Macquarie University , Balaclava Road, North Ryde, NSW 2109, Australia; Research Centre for Astronomy, Astrophysics and Astrophotonics, Macquarie University , Balaclava Road, North Ryde, NSW 2109, AustraliaNSF’s National Optical-Infrared Astronomy Research Laboratory , 950 N. Cherry Avenue, Tucson, AZ 85719, USACarleton College, One North College Street, Northfield, MN 55057, USACenter for Astrophysics ∣ Harvard & Smithsonian, 60 Garden Street, Cambridge, MA 02138, USAKotizarovci Observatory, Sarsoni 90, 51216 Viskovo, CroatiaSouth African Astronomical Observatory, P.O. Box 9, Observatory, Cape Town 7935, South AfricaAAVSO, 185 Alewife Brook Parkway, Suite 410, Cambridge, MA 02138, USACenter for Astrophysics ∣ Harvard & Smithsonian, 60 Garden Street, Cambridge, MA 02138, USACenter for Astrophysics ∣ Harvard & Smithsonian, 60 Garden Street, Cambridge, MA 02138, USADepartment of Astronomy and Astrophysics, University of California , Santa Cruz, CA 95064, USA; SETI Institute, Carl Sagan Center , 339 Bernardo Avenue, Suite 200, Mountain View, CA 94043, USADepartment of Physics and Astronomy, University of New Mexico , Albuquerque, NM, USANASA Goddard Space Flight Center , Exoplanets and Stellar Astrophysics Laboratory (Code 667), Greenbelt, MD 20771, USANASA Ames Research Center , Moffett Field, CA 94035, USADepartment of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology , Cambridge, MA 02139, USADepartment of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology , Cambridge, MA 02139, USA; 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, USADepartment of Astrophysical Sciences, Princeton University , 4 Ivy Lane, Princeton, NJ 08540, USANASA Ames Research Center , Moffett Field, CA 94035, USADepartment of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology , Cambridge, MA 02139, USANASA Ames Research Center , Moffett Field, CA 94035, USA; Research Institute for Advanced Computer Science, Universities Space Research Association , Washington, DC 20024, USAWarm Jupiters are close-in giant planets with relatively large planet–star separations (i.e., 10 < a / R _⋆ < 100). Given their weak tidal interactions with their host stars, measurements of stellar obliquity may be used to probe the initial obliquity distribution and dynamical history for close-in gas giants. Using spectroscopic observations, we confirm the planetary nature of TOI-1859b and determine the stellar obliquity of TOI-1859 to be λ = 38.9 ${}_{-2.7}^{+2.8}$ ° relative to its planetary companion using the Rossiter–McLaughlin effect. TOI-1859b is a 64 day warm Jupiter orbiting around a late F dwarf and has an orbital eccentricity of 0.57 ${}_{-0.16}^{+0.12}$ inferred purely from transit light curves. The eccentric and misaligned orbit of TOI-1859b is likely an outcome of dynamical interactions, such as planet–planet scattering and planet–disk resonance crossing.https://doi.org/10.3847/2041-8213/acd93dExtrasolar gaseous giant planetsExoplanet dynamicsRadial velocityTransit photometry |
| spellingShingle | Jiayin Dong Songhu Wang Malena Rice George Zhou Chelsea X. Huang Rebekah I. Dawson Gudmundur K. Stefánsson Samuel Halverson Shubham Kanodia Suvrath Mahadevan Michael W. McElwain Jaime A. Alvarado-Montes Joe P. Ninan Paul Robertson Arpita Roy Christian Schwab Sarah E. Logsdon Ryan C. Terrien Karen A. Collins Gregor Srdoc Ramotholo Sefako Didier Laloum David W. Latham Allyson Bieryla Paul A. Dalba Diana Dragomir Steven Villanueva Jr. Steve B. Howell George R. Ricker S. Seager Joshua N. Winn Jon M. Jenkins Avi Shporer David Rapetti TOI-1859b: A 64 Day Warm Jupiter on an Eccentric and Misaligned Orbit The Astrophysical Journal Letters Extrasolar gaseous giant planets Exoplanet dynamics Radial velocity Transit photometry |
| title | TOI-1859b: A 64 Day Warm Jupiter on an Eccentric and Misaligned Orbit |
| title_full | TOI-1859b: A 64 Day Warm Jupiter on an Eccentric and Misaligned Orbit |
| title_fullStr | TOI-1859b: A 64 Day Warm Jupiter on an Eccentric and Misaligned Orbit |
| title_full_unstemmed | TOI-1859b: A 64 Day Warm Jupiter on an Eccentric and Misaligned Orbit |
| title_short | TOI-1859b: A 64 Day Warm Jupiter on an Eccentric and Misaligned Orbit |
| title_sort | toi 1859b a 64 day warm jupiter on an eccentric and misaligned orbit |
| topic | Extrasolar gaseous giant planets Exoplanet dynamics Radial velocity Transit photometry |
| url | https://doi.org/10.3847/2041-8213/acd93d |
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