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K2-290: A warm Jupi...
K2-290: A warm Jupiter and a mini-Neptune in a triple-star system
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- Hjorth, M. (author)
- Århus Universitet,Aarhus University
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- Justesen, A.B. (author)
- Århus Universitet,Aarhus University
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- Hirano, T. (author)
- Tokyo Institute of Technology
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- Albrecht, Simon (author)
- Århus Universitet,Aarhus University
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- Gandolfi, D. (author)
- Universita degli Studi di Torino,University of Turin
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- Dai, Fei (author)
- Princeton University,Massachusetts Institute of Technology (MIT)
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- Alonso, R. (author)
- Instituto de Astrofísica de Canarias
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- Barragán, O. (author)
- Universita degli Studi di Torino,University of Turin
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- Esposito, M. (author)
- Thüringer Landessternwarte Tautenburg
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- Kuzuhara, M. (author)
- National Astronomical Observatory of Japan,National Institutes of Natural Sciences (NINS)
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- Lam, K. W.F. (author)
- Technische Universität Berlin
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- Livingston, J. (author)
- University of Tokyo, Japan
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- Rodriguez, P. M. (author)
- Instituto de Astrofísica de Canarias
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- Narita, Norio (author)
- University of Tokyo, Japan,National Astronomical Observatory of Japan,National Institutes of Natural Sciences (NINS),Instituto de Astrofísica de Canarias
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- Nowak, G. (author)
- Instituto de Astrofísica de Canarias
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- Prieto-Arranz, J. (author)
- Instituto de Astrofísica de Canarias
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- Redfield, S. (author)
- Wesleyan University
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- Rodler, F. (author)
- European Southern Observatory Santiago
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- Van Eylen, Vincent (author)
- Princeton University
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- Winn, J. N. (author)
- Princeton University
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- Antoniciello, Giuliano (author)
- Universita degli Studi di Torino,University of Turin
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- Cabrera, J. (author)
- Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)
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- Cochran, William D. (author)
- The University of Texas at Austin, USA
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- Csizmadia, Szilard (author)
- Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)
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- De Leon, Jerome P. (author)
- University of Tokyo, Japan
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- Deeg, H. (author)
- Instituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna
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- Eigmüller, P. (author)
- Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)
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- Endl, M. (author)
- The University of Texas at Austin, USA
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- Erikson, Anders (author)
- Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)
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- Fridlund, Malcolm, 1952 (author)
- Chalmers tekniska högskola,Chalmers University of Technology,Universiteit Leiden (UL),Leiden University (UL)
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- Grziwa, S. (author)
- Universität zu Köln,University of Cologne
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- Guenther, E. W. (author)
- Thüringer Landessternwarte Tautenburg
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- Hatzes, A. (author)
- Thüringer Landessternwarte Tautenburg
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Heeren, P. (author)
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- Hidalgo, D. (author)
- Universidad de la Laguna,University of La Laguna,Instituto de Astrofísica de Canarias
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- Korth, Judith (author)
- Universität zu Köln,University of Cologne
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- Luque, R. (author)
- Instituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna
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- Nespral, David (author)
- Universidad de la Laguna,University of La Laguna,Instituto de Astrofísica de Canarias
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- Palle, Enric (author)
- Universidad de la Laguna,University of La Laguna,Instituto de Astrofísica de Canarias
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- Pätzold, 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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- Rauer, H. (author)
- Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR),Technische Universität Berlin,Freie Universität Berlin
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- Smith, Alexis M. S. (author)
- Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)
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- Trifonov, T. (author)
- Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
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(creator_code:org_t)
- 2019-01-15
- 2019
- English.
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In: Monthly Notices of the Royal Astronomical Society. - : Oxford University Press (OUP). - 0035-8711 .- 1365-2966. ; 484:3, s. 3522-3536
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Abstract
Subject headings
Close
- We report the discovery of two transiting planets orbiting K2-290 (EPIC 249624646), a bright (V = 11.11) late F-type star residing in a triple-star system. It was observed during Campaign 15 of the K2 mission, and in order to confirm and characterize the system, follow-up spectroscopy and AO imaging were carried out using the FIES, HARPS, HARPS-N, and IRCS instruments. From AO imaging and Gaia data we identify two M-dwarf companions at a separation of 113 ± 2 and 2467+−177155 au. From radial velocities, K2 photometry, and stellar characterization of the host star, we find the inner planet to be a mini-Neptune with a radius of 3.06 ± 0.16 R and an orbital period of P = 9.2 d. The radius of the mini-Neptune suggests that the planet is located above the radius valley, and with an incident flux of F ∼ 400 F, it lies safely outside the super-Earth desert. The outer warm Jupiter has a mass of 0.774 ± 0.047 MJ and a radius of 1.006 ± 0.050 RJ, and orbits the host star every 48.4 d on an orbit with an eccentricity e < 0.241. Its mild eccentricity and mini-Neptune sibling suggest that the warm Jupiter originates from in situ formation or disc migration.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Annan geovetenskap och miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Other Earth and Related Environmental Sciences (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Geologi (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Geology (hsv//eng)
Keyword
- Satellites: individual: EPIC 249624646
- Planets and satellites: individual: K2-290
- Planets
- Planets and satellites: formation
- Planets and satellites: detection
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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Hjorth, M.
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Justesen, A.B.
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Hirano, T.
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Albrecht, Simon
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Gandolfi, D.
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Dai, Fei
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show more...
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Alonso, R.
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Barragán, O.
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Esposito, M.
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Kuzuhara, M.
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Lam, K. W.F.
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Livingston, J.
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Rodriguez, P. M.
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Narita, Norio
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Nowak, G.
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Prieto-Arranz, J ...
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Redfield, S.
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Rodler, F.
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Van Eylen, Vince ...
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Winn, J. N.
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Antoniciello, Gi ...
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Cabrera, J.
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Cochran, William ...
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Csizmadia, Szila ...
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De Leon, Jerome ...
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Deeg, H.
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Eigmüller, P.
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Endl, M.
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Erikson, Anders
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Fridlund, Malcol ...
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Grziwa, S.
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Guenther, E. W.
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Hatzes, A.
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Heeren, P.
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Hidalgo, D.
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Korth, Judith
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Luque, R.
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Nespral, David
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Palle, Enric
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Pätzold, Martin
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Persson, Carina, ...
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Rauer, H.
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Smith, Alexis M. ...
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Trifonov, T.
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- About the subject
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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 Earth and Relate ...
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and Other Earth and ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
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and Geology
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Monthly Notices ...
- By the university
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Chalmers University of Technology