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A low-eccentricity ...
A low-eccentricity migration pathway for a 13-h-period Earth analogue in a four-planet system
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- Serrano, L. M. (author)
- Universita degli Studi di Torino,University of Turin
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- Gandolfi, D. (author)
- Universita degli Studi di Torino,University of Turin
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- Mustill, Alexander J. (author)
- Lund University,Lunds universitet,Astronomi - Genomgår omorganisation,Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation,Naturvetenskapliga fakulteten,Lund Observatory - Undergoing reorganization,Department of Astronomy and Theoretical Physics - Undergoing reorganization,Faculty of Science
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- Barragán, O. (author)
- University Of Oxford,University of Oxford
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- Korth, Judith, 1987 (author)
- Chalmers University of Technology
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- Dai, Fei (author)
- California Institute of Technology (Caltech),California Institute of Technology
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- Redfield, S. (author)
- Wesleyan University
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- Fridlund, Malcolm, 1952 (author)
- Chalmers University of Technology
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- Lam, K. W.F. (author)
- Technische Universität Berlin,Technical University of Berlin
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- Díaz, Matías R. (author)
- Las Campanas Observatory,Universidad de Chile (UCH),University of Chile (UCH),University of Chile
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- Grziwa, S. (author)
- Universität zu Köln,University of Cologne
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- Collins, Karen A. (author)
- Harvard-Smithsonian Center for Astrophysics,Smithsonian Astrophysical Observatory
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- Livingston, J.H. (author)
- University of Tokyo, Japan
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- Cochran, William D. (author)
- The University of Texas at Austin, USA,University of Texas at Austin
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- Hellier, Coel (author)
- Keele University
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- Bellomo, Salvatore E. (author)
- Universita degli Studi di Torino,University of Turin
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- Trifonov, T. (author)
- Sofijski universitet (Sveti Kliment Ohridski),Sofia University (St. Kliment Ohridski),Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG),University of Sofia
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- Rodler, F. (author)
- European Southern Observatory Santiago
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- Alarcon, Javier (author)
- European Southern Observatory Santiago,European Southern Observatory
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- Jenkins, Jon M. (author)
- NASA Ames Research Center
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- Latham, D. W. (author)
- Harvard-Smithsonian Center for Astrophysics,Harvard–Smithsonian Center for Astrophysics
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- Ricker, George R. (author)
- Massachusetts Institute of Technology (MIT),Massachusetts Institute of Technology
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- Seager, S. (author)
- Massachusetts Institute of Technology (MIT),Massachusetts Institute of Technology,DLR Institute of Planetary Research
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- Vanderspeck, Roland (author)
- Massachusetts Institute of Technology (MIT),Massachusetts Institute of Technology
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- Winn, J. N. (author)
- Princeton University
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- Albrecht, Simon (author)
- Århus Universitet,Aarhus University
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- Collins, Kevin I. (author)
- George Mason University
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- Csizmadia, Szilárd (author)
- Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR),German Aerospace Center (DLR)
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- Daylan, Tansu (author)
- Massachusetts Institute of Technology (MIT)
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- Deeg, H. (author)
- Universidad de la Laguna,University of La Laguna,Instituto de Astrofísica de Canarias,University of La Laguna (ULL)
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- Esposito, M. (author)
- Thüringer Landessternwarte Tautenburg,Thuringer Landessternwarte Tautenburg
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- Fausnaugh, Michael (author)
- Massachusetts Institute of Technology (MIT),Massachusetts Institute of Technology
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- Georgieva, Iskra (author)
- Universiteit Leiden (UL),Leiden University (UL),Leiden University
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- Goffo, E. (author)
- Universita degli Studi di Torino,University of Turin,Thüringer Landessternwarte Tautenburg,Thuringer Landessternwarte Tautenburg
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- Guenther, E. W. (author)
- Thüringer Landessternwarte Tautenburg,Thuringer Landessternwarte Tautenburg
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- Hatzes, A. (author)
- Thüringer Landessternwarte Tautenburg,Thuringer Landessternwarte Tautenburg
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- Howell, S.B. (author)
- NASA Ames Research Center
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- Jensen, Eric L.N. (author)
- Swarthmore College
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- Luque, R. (author)
- Instituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna,University of La Laguna (ULL)
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- Mann, A. (author)
- The University of North Carolina,The University of North Carolina System,University of North Carolina
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- Murgas, F. (author)
- Universidad de la Laguna,University of La Laguna,Instituto de Astrofísica de Canarias,University of La Laguna (ULL)
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- Osborne, H. L.M. (author)
- University College London (UCL),University College London
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- Palle, Enric (author)
- Instituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna,University of La Laguna (ULL)
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- Persson, Carina, 1964 (author)
- Universiteit Leiden (UL),Leiden University (UL),Leiden University
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Rowden, Pamela (author)
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- Rudat, Alexander (author)
- Massachusetts Institute of Technology (MIT),Massachusetts Institute of Technology
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- Smith, Alexis M. S. (author)
- Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)
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- Twicken, J. D. (author)
- SETI Institute,NASA Ames Research Center
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- Van Eylen, Vincent (author)
- University College London (UCL),University College London
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- Ziegler, C. (author)
- Stephen F. Austin State University,University of Texas at Austin
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- Chile, European Southern Observatory (author)
- European Southern Observatory Santiago
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- Technology, Massachusetts Institute (author)
- Massachusetts Institute of Technology
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- Rowden, Pam (author)
- Royal Astronomical Society, UK
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(creator_code:org_t)
- 2022-04-28
- 2022
- English.
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In: Nature Astronomy. - : Springer Science and Business Media LLC. - 2397-3366. ; 6:6, s. 736-750
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Abstract
Subject headings
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- It is commonly accepted that exoplanets with orbital periods shorter than one day, also known as ultra-short-period (USP) planets, formed further out within their natal protoplanetary disks before migrating to their current-day orbits via dynamical interactions. One of the most accepted theories suggests a violent scenario involving high-eccentricity migration followed by tidal circularization. Here we present the discovery of a four-planet system orbiting the bright (V = 10.5) K6 dwarf star TOI-500. The innermost planet is a transiting, Earth-sized USP planet with an orbital period of ~13 hours, a mass of 1.42 ± 0.18 M⊕, a radius of 1.166−0.058+0.061R⊕ and a mean density of 4.89−0.88+1.03gcm−3. Via Doppler spectroscopy, we discovered that the system hosts 3 outer planets on nearly circular orbits with periods of 6.6, 26.2 and 61.3 days and minimum masses of 5.03 ± 0.41 M⊕, 33.12 ± 0.88 M⊕ and 15.05−1.11+1.12M⊕, respectively. The presence of both a USP planet and a low-mass object on a 6.6-day orbit indicates that the architecture of this system can be explained via a scenario in which the planets started on low-eccentricity orbits then moved inwards through a quasi-static secular migration. Our numerical simulations show that this migration channel can bring TOI-500 b to its current location in 2 Gyr, starting from an initial orbit of 0.02 au. TOI-500 is the first four-planet system known to host a USP Earth analogue whose current architecture can be explained via a non-violent migration scenario.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Inbäddad systemteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Embedded Systems (hsv//eng)
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Serrano, L. M.
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Gandolfi, D.
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Mustill, Alexand ...
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Barragán, O.
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Korth, Judith, 1 ...
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Dai, Fei
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show more...
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Redfield, S.
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Fridlund, Malcol ...
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Lam, K. W.F.
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Díaz, Matías R.
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Grziwa, S.
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Collins, Karen A ...
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Livingston, J.H.
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Cochran, William ...
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Hellier, Coel
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Bellomo, Salvato ...
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Trifonov, T.
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Rodler, F.
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Alarcon, Javier
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Jenkins, Jon M.
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Latham, D. W.
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Ricker, George R ...
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Seager, S.
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Vanderspeck, Rol ...
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Winn, J. N.
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Albrecht, Simon
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Collins, Kevin I ...
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Csizmadia, Szilá ...
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Daylan, Tansu
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Deeg, H.
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Esposito, M.
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Fausnaugh, Micha ...
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Georgieva, Iskra
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Goffo, E.
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Guenther, E. W.
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Hatzes, A.
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Howell, S.B.
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Jensen, Eric L.N ...
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Luque, R.
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Mann, A.
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Murgas, F.
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Osborne, H. L.M.
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Palle, Enric
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Persson, Carina, ...
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Rowden, Pamela
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Rudat, Alexander
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Smith, Alexis M. ...
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Twicken, J. D.
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Van Eylen, Vince ...
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Ziegler, C.
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Chile, European ...
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Technology, Mass ...
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Rowden, Pam
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- NATURAL SCIENCES
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NATURAL SCIENCES
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Other Physics To ...
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- ENGINEERING AND TECHNOLOGY
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ENGINEERING AND ...
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and Electrical Engin ...
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and Embedded Systems
- Articles in the publication
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Nature Astronomy
- By the university
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Chalmers University of Technology
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Lund University