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Search: onr:"swepub:oai:research.chalmers.se:547999b0-03e4-4b25-adbc-a2fc5a07c6d8" > K2-99 revisited: A ...

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K2-99 revisited: A non-inflated warm Jupiter, and a temperate giant planet on a 522-d orbit around a subgiant

Smith, Alexis M. S. (author)
Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)
Breton, S. N. (author)
Université Paris-Saclay,University Paris-Saclay
Csizmadia, Szilard (author)
Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)
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Dai, F. (author)
California Institute of Technology (Caltech)
Gandolfi, D. (author)
Universita degli Studi di Torino,University of Turin
García, R. A. (author)
Université Paris-Saclay,University Paris-Saclay
Howard, A. W. (author)
California Institute of Technology (Caltech)
Isaacson, H. (author)
University of California
Korth, Judith, 1987 (author)
Chalmers tekniska högskola,Chalmers University of Technology
Lam, K. W.F. (author)
Technische Universität Berlin,Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)
Mathur, S. (author)
Instituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna
Nowak, G. (author)
Instituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna
Pérez Hernández, F. (author)
Instituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna
Persson, Carina, 1964 (author)
Chalmers tekniska högskola,Chalmers University of Technology
Albrecht, S. H. (author)
Århus Universitet,Aarhus University
Barragán, O. (author)
University Of Oxford
Cabrera, J. (author)
Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)
Cochran, W. D. (author)
The University of Texas at Austin, USA
Deeg, H. J. (author)
Universidad de la Laguna,University of La Laguna,Instituto de Astrofísica de Canarias
Fridlund, Malcolm, 1952 (author)
Universiteit Leiden (UL),Leiden University (UL),Chalmers tekniska högskola,Chalmers University of Technology
Georgieva, Iskra, 1987 (author)
Chalmers tekniska högskola,Chalmers University of Technology
Gof fo, E. (author)
Universita degli Studi di Torino,University of Turin,Thüringer Landessternwarte Tautenburg
Guenther, E. W. (author)
Thüringer Landessternwarte Tautenburg
Hatzes, A. (author)
Thüringer Landessternwarte Tautenburg
Kabath, Petr (author)
Czech Academy of Sciences
Livingston, J. H. (author)
University of Tokyo, Japan
Luque, R. (author)
Instituto de Astrofisica de Andalucía (IAA),Institute of Astrophysics of Andalusia (IAA)
Palle, Enric (author)
Universidad de la Laguna,University of La Laguna,Instituto de Astrofísica de Canarias
Redfield, S. (author)
Wesleyan University
Rodler, F. (author)
European Southern Observatory Santiago
Serrano, L. M. (author)
Universita degli Studi di Torino,University of Turin
Van Eylen, Vincent (author)
University College London (UCL)
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 (creator_code:org_t)
2021-12-02
2022
English.
In: Monthly Notices of the Royal Astronomical Society. - : Oxford University Press (OUP). - 0035-8711 .- 1365-2966. ; 510:4, s. 5035-5049
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  • Journal article (peer-reviewed)
Abstract Subject headings
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  • We report new photometric and spectroscopic observations of the K2-99 planetary system. Asteroseismic analysis of the short-cadence light curve from K2's Campaign 17 allows us to refine the stellar properties. We find K2-99 to be significantly smaller than previously thought, with R = 2.55 ± 0.02 R. The new light curve also contains four transits of K2-99 b, which we use to improve our knowledge of the planetary properties. We find the planet to be a non-inflated warm Jupiter, with Rb = 1.06 ± 0.01 RJup. 60 new radial velocity measurements from HARPS, HARPS-N, and HIRES enable the determination of the orbital parameters of K2-99 c, which were previously poorly constrained. We find that this outer planet has a minimum mass Mcsin ic = 8.4 ± 0.2 MJup, and an eccentric orbit (ec = 0.210 ± 0.009) with a period of 522.2 ± 1.4 d. Upcoming TESS observations in 2022 have a good chance of detecting the transit of this planet, if the mutual inclination between the two planetary orbits is small.

Subject headings

NATURVETENSKAP  -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
NATURVETENSKAP  -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
NATURVETENSKAP  -- Fysik -- Annan fysik (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Other Physics Topics (hsv//eng)

Keyword

Planetary systems
Planets and satellites: Individual: K2-99 b
Planets and satellites: Individual: K2-99 c
Planets and satellites: Detection

Publication and Content Type

art (subject category)
ref (subject category)

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