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Sub-stellar compani...
Sub-stellar companions of intermediate-mass stars with CoRoT: CoRoT-34b, CoRoT-35b, and CoRoT-36b
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- Sebastian, D. (author)
- University of Birmingham
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- Guenther, E. W. (author)
- Thüringer Landessternwarte Tautenburg
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- Deleuil, M. (author)
- Laboratoire d'Astrophysique de Marseille
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- Dorsch, M. (author)
- Friedrich-Alexander-Universität Erlangen Nurnberg (FAU)
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- Heber, U. (author)
- Friedrich-Alexander-Universität Erlangen Nurnberg (FAU)
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- Heuser, C. (author)
- Friedrich-Alexander-Universität Erlangen Nurnberg (FAU)
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- Gandolfi, D. (author)
- Istituto nazionale di astrofisica (INAF)
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- Grziwa, S. (author)
- Universität zu Köln,University of Cologne
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- Deeg, H. J. (author)
- Instituto de Astrofísica de Canarias
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- Alonso, R. (author)
- Universidad de la Laguna,University of La Laguna,Instituto de Astrofísica de Canarias
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- Bouchy, F. (author)
- Université de Genève,University of Geneva
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- Csizmadia, Sz (author)
- Technische Universität Berlin
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- Cusano, F. (author)
- Istituto nazionale di astrofisica (INAF)
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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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- Geier, S. (author)
- Universität Potsdam,University of Potsdam
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- Irrgang, A. (author)
- Friedrich-Alexander-Universität Erlangen Nurnberg (FAU)
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- Korth, Judith, 1987 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Nespral, D. (author)
- Instituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna
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- Rauer, H. (author)
- Freie Universität Berlin,Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)
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- Tal-Or, L. (author)
- Ariel University
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(creator_code:org_t)
- 2022-08-01
- 2022
- English.
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In: Monthly Notices of the Royal Astronomical Society. - : Oxford University Press (OUP). - 0035-8711 .- 1365-2966. ; 516:1, s. 636-655
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Abstract
Subject headings
Close
- Theories of planet formation give contradicting results of how frequent close-in giant planets of intermediate mass stars (IMSs; 1.3 <= M-* <= 3.2 M-circle dot) are. Some theories predict a high rate of IMSs with close-in gas giants, while others predict a very low rate. Thus, determining the frequency of close-in giant planets of IMSs is an important test for theories of planet formation. We use the CoRoT survey to determine the absolute frequency of IMSs that harbour at least one close-in giant planet and compare it to that of solar-like stars. The CoRoT transit survey is ideal for this purpose, because of its completeness for gas-giant planets with orbital periods of less than 10 d and its large sample of main-sequence IMSs. We present a high precision radial velocity follow-up programme and conclude on 17 promising transit candidates of IMSs, observed with CoRoT. We report the detection of CoRoT-34b, a brown dwarf close to the hydrogen burning limit, orbiting a 1.1 Gyr A-type main-sequence star. We also confirm two inflated giant planets, CoRoT-35b, part of a possible planetary system around a metal-poor star, and CoRoT-36b on a misaligned orbit. We find that 0.12 +/- 0.10 per cent of IMSs between 1.3 <= M-* <= 1.6 M-circle dot observed by CoRoT do harbour at least one close-in giant planet. This is significantly lower than the frequency (0.70 +/- 0.16 per cent) for solar-mass stars, as well as the frequency of IMSs harbouring long-period planets (similar to 8 per cent).
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- stars: statistics
- techniques: photometric
- stars: early-type
- techniques: radial velocities
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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Sebastian, D.
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Guenther, E. W.
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Deleuil, M.
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Dorsch, M.
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Heber, U.
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Heuser, C.
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show more...
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Gandolfi, D.
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Grziwa, S.
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Deeg, H. J.
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Alonso, R.
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Bouchy, F.
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Csizmadia, Sz
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Cusano, F.
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Fridlund, Malcol ...
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Geier, S.
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Irrgang, A.
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Korth, Judith, 1 ...
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Nespral, D.
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Rauer, H.
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Tal-Or, L.
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show less...
- 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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Monthly Notices ...
- By the university
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Chalmers University of Technology