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It Takes Two Planet...
It Takes Two Planets in Resonance to Tango around K2-146
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- Lam, Kristine W. F. (author)
- Technische Universität Berlin
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- Korth, Judith (author)
- Universität zu Köln,University of Cologne
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- Masuda, Kento (author)
- Princeton University
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- Csizmadia, Szilard (author)
- Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)
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- Eigmueller, Philipp (author)
- Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)
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- Kari Stefansson, Gumundur (author)
- Pennsylvania State University
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- Endl, Michael (author)
- The University of Texas at Austin, USA,The University of Texas at Austin, USA
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- Albrecht, Simon (author)
- Århus Universitet,Aarhus University
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- Robertson, Paul (author)
- Pennsylvania State University
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- Luque, Rafael (author)
- Universidad de la Laguna,University of La Laguna,Instituto de Astrofísica de Canarias
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- Livingston, John H. (author)
- University of Tokyo, Japan
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- Hirano, Teruyuki (author)
- Tokyo Institute of Technology
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- Alonso Sobrino, Roi (author)
- Universidad de la Laguna,University of La Laguna,Instituto de Astrofísica de Canarias
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- Barragan, Oscar (author)
- University Of Oxford
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- Cabrera, Juan (author)
- Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)
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- Carleo, Ilaria (author)
- Wesleyan University
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- Chaushev, Alexander (author)
- Technische Universität Berlin
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- Cochran, William D. (author)
- The University of Texas at Austin, USA,The University of Texas at Austin, USA
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- Dai, Fei (author)
- Massachusetts Institute of Technology (MIT),Princeton University
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- de Leon, Jerome (author)
- University of Tokyo, Japan
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- Deeg, Hans J. (author)
- Instituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna
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- Erikson, Anders (author)
- Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)
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- Esposito, Massimiliano (author)
- Thüringer Landessternwarte Tautenburg,Technische Universität Berlin
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- Fridlund, Malcolm, 1952 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Fukui, Akihiko (author)
- National Institutes of Natural Sciences (NINS)
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- Gandolfi, Davide (author)
- Universita degli Studi di Torino,University of Turin
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- Georgieva, Iskra (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Gonzalez Cuesta, Luca (author)
- Instituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna
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- Grziwa, Sascha (author)
- Universität zu Köln,University of Cologne
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- Guenther, Eike W. (author)
- Thüringer Landessternwarte Tautenburg
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- Hatzes, Artie P. (author)
- Thüringer Landessternwarte Tautenburg
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- Hidalgo, Diego (author)
- Universidad de la Laguna,University of La Laguna,Instituto de Astrofísica de Canarias
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- Hjorth, Maria (author)
- Århus Universitet,Aarhus University
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- Kabath, Petr (author)
- Czech Academy of Sciences
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- Knudstrup, Emil (author)
- Århus Universitet,Aarhus University
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- Lund, Mikkel N. (author)
- Århus Universitet,Aarhus University
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- Mahadevan, Suvrath (author)
- Pennsylvania State University
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- Mathur, Savita (author)
- Instituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna
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- Montanes Rodriguez, Pilar (author)
- Instituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna
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- Murgas, Felipe (author)
- Instituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna
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- Narita, Norio (author)
- National Institutes of Natural Sciences (NINS),Instituto de Astrofísica de Canarias,Japan Science and Technology Agency (JST)
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- Nespral, David (author)
- Instituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna
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- Niraula, Prajwal (author)
- Massachusetts Institute of Technology (MIT)
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- Palle, Enric (author)
- Instituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna
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- Paetzold, Martin (author)
- Universität zu Köln,University of Cologne
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- Persson, Carina, 1964 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Prieto-Arranz, Jorge (author)
- Instituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna
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- Rauer, Heike (author)
- Technische Universität Berlin,Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR),Freie Universität Berlin
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- Redfield, Seth (author)
- Wesleyan University
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- Ribas, Ignasi (author)
- Institut d'Estudis Espacials de Catalunya (IEEC),Institute of Space Studies of Catalonia (IEEC),Agencia Estatal Consejo Superior de Investigaciones Científicas,Spanish National Research Council
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- Skarka, Marek (author)
- Czech Academy of Sciences,Masarykova Univerzita,Masaryk University
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- Smith, Alexis M. S. (author)
- Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)
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- Subjak, Jan (author)
- Czech Academy of Sciences,Univerzita Karlova,Charles University
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- Van Eylen, Vincent (author)
- University College London (UCL),Princeton University
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(creator_code:org_t)
- 2020-02-21
- 2020
- English.
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In: Astronomical Journal. - : American Astronomical Society. - 1538-3881 .- 0004-6256. ; 159:3
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Abstract
Subject headings
Close
- K2-146 is a cool, 0.358M dwarf that was found to host a mini-Neptune with a 2.67 day period. The planet exhibited strong transit timing variations (TTVs) of greater than 30 minutes, indicative of the presence of an additional object in the system. Here we report the discovery of the previously undetected outer planet in the system, K2-146 c, using additional photometric data. K2-146 c was found to have a grazing transit geometry and a 3.97 day period. The outer planet was only significantly detected in the latter K2 campaigns presumably because of precession of its orbital plane. The TTVs of K2-146 b and c were measured using observations spanning a baseline of almost 1200 days. We found strong anti -correlation in the TTVs, suggesting the two planets are gravitationally interacting. Our TTV and transit model analyses revealed that K2-146 b has a radius of 2.25 0.10 Re and a mass of 5.6 0.7 Me, whereas K2-146 c has a radius of 2.591 Re and a mass of 7.1 0.9 Me. The inner and outer planets likely have moderate eccentricities of e = 0.14 0.07 and 0.16 0.07, respectively. Long-term numerical integrations of the two -planet orbital solution show that it can be dynamically stable for at least 2 Myr. We show that the resonance angles of the planet pair are librating, which may be an indication that K2-146 b and c are in a 3:2 mean motion resonance. The orbital architecture of the system points to a possible convergent migration origin.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Rymd- och flygteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Aerospace Engineering (hsv//eng)
- 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)
Keyword
- MASS
- DYNAMICS
- PHOTOMETRY
- SPECTRAL-ANALYSIS
- ALGORITHM
- CURVES
- TERRESTRIAL PLANETS
- MIGRATION
- SUPER-EARTHS
Publication and Content Type
- art (subject category)
- ref (subject category)
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To the university's database
- By the author/editor
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Lam, Kristine W. ...
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Korth, Judith
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Masuda, Kento
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Csizmadia, Szila ...
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Eigmueller, Phil ...
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Kari Stefansson, ...
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show more...
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Endl, Michael
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Albrecht, Simon
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Robertson, Paul
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Luque, Rafael
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Livingston, John ...
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Hirano, Teruyuki
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Alonso Sobrino, ...
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Barragan, Oscar
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Cabrera, Juan
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Carleo, Ilaria
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Chaushev, Alexan ...
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Cochran, William ...
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Dai, Fei
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de Leon, Jerome
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Deeg, Hans J.
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Erikson, Anders
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Esposito, Massim ...
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Fridlund, Malcol ...
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Fukui, Akihiko
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Gandolfi, Davide
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Georgieva, Iskra
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Gonzalez Cuesta, ...
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Grziwa, Sascha
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Guenther, Eike W ...
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Hatzes, Artie P.
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Hidalgo, Diego
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Hjorth, Maria
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Kabath, Petr
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Knudstrup, Emil
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Lund, Mikkel N.
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Mahadevan, Suvra ...
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Mathur, Savita
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Montanes Rodrigu ...
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Murgas, Felipe
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Narita, Norio
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Nespral, David
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Niraula, Prajwal
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Palle, Enric
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Paetzold, Martin
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Persson, Carina, ...
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Prieto-Arranz, J ...
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Rauer, Heike
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Redfield, Seth
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Ribas, Ignasi
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Skarka, Marek
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Smith, Alexis M. ...
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Subjak, Jan
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Van Eylen, Vince ...
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- About the subject
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- ENGINEERING AND TECHNOLOGY
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ENGINEERING AND ...
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and Mechanical Engin ...
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and Aerospace Engine ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Astronomy Astrop ...
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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 ...
- Articles in the publication
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Astronomical Jou ...
- By the university
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Chalmers University of Technology