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HIP 41378 observed by CHEOPS: Where is planet d?

Sulis, S. (author)
Laboratoire d'Astrophysique de Marseille
Borsato, L. (author)
Istituto nazionale di astrofisica (INAF)
Grouffal, S. (author)
Laboratoire d'Astrophysique de Marseille
show more...
Osborn, H. P. (author)
Massachusetts Institute of Technology (MIT),Universität Bern,University of Bern
Santerne, A. (author)
Laboratoire d'Astrophysique de Marseille
Brandeker, A. (author)
Stockholms universitet,Stockholm University
Günther, Maximilian N. (author)
European Space Research and Technology Centre (ESA ESTEC)
Heitzmann, A. (author)
Université de Genève,University of Geneva
Lendl, M. (author)
Université de Genève,University of Geneva
Fridlund, Malcolm, 1952 (author)
Universiteit Leiden (UL),Leiden University (UL),Chalmers tekniska högskola,Chalmers University of Technology
Gandolfi, D. (author)
Universita degli Studi di Torino,University of Turin
Alibert, Y. (author)
Universität Bern,University of Bern
Alonso, R. (author)
Instituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna
Bárczy, T. (author)
Barrado Navascues, D. (author)
European Space Astronomy Centre (ESAC)
Barros, S.C.C. (author)
Universidade do Porto,University of Porto
Baumjohann, W. (author)
Beck, T. (author)
Universität Bern,University of Bern
Benz, W. (author)
Universität Bern,University of Bern
Bergomi, M. (author)
Istituto nazionale di astrofisica (INAF)
Billot, N. (author)
Université de Genève,University of Geneva
Bonfanti, A. (author)
Broeg, C. (author)
Universität Bern,University of Bern
Collier Cameron, A. (author)
University of St Andrews
Corral Van Damme, C. (author)
European Space Research and Technology Centre (ESA ESTEC)
Correia, A. (author)
Csizmadia, Szilard (author)
Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)
Cubillos, P. E. (author)
Istituto nazionale di astrofisica (INAF)
Davies, M. B. (author)
Lunds universitet,Lund University
Deleuil, M. (author)
Laboratoire d'Astrophysique de Marseille
Deline, A. (author)
Université de Genève,University of Geneva
Delrez, L. (author)
Universite de Liège,University of Liège,Katholieke Universiteit Leuven
Demangeon, O. (author)
Universidade do Porto,University of Porto
Demory, B.O. (author)
Universität Bern,University of Bern
Derekas, A. (author)
Eötvös Loránd University (ELTE)
Edwards, Billy (author)
Netherlands Institute for Space Research (SRON)
Ehrenreich, D. (author)
Université de Genève,University of Geneva
Erikson, Anders (author)
Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)
Fortier, A. (author)
Universität Bern,University of Bern
Fossati, L. (author)
Gazeas, K. (author)
University of Athens
Gillon, Michaël (author)
Universite de Liège,University of Liège
Gudel, M. (author)
Universität Wien,University of Vienna
Helling, Ch. (author)
Technische Universität Graz
Hoyer, S. (author)
Laboratoire d'Astrophysique de Marseille
Isaak, K. (author)
European Space Research and Technology Centre (ESA ESTEC)
Kiss, L. L. (author)
Eötvös Loránd University (ELTE),Magyar Tudomanyos Akademia,Hungarian Academy of Sciences
Korth, Judith (author)
Lunds universitet,Lund University
Lam, K. W.F. (author)
Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)
Laskar, J. (author)
Observatoire de Paris,Paris Observatory
des Etangs, A. L. (author)
Institut d 'Astrophysique de Paris
Magrin, D. (author)
Istituto nazionale di astrofisica (INAF)
Maxted, P. (author)
Keele University
Mordasini, C. (author)
Universität Bern,University of Bern
Nascimbeni, Valerio (author)
Istituto nazionale di astrofisica (INAF)
Olofsson, G. (author)
Stockholms universitet,Stockholm University
Ottensamer, R. (author)
Universität Wien,University of Vienna
Pagano, I. (author)
Istituto nazionale di astrofisica (INAF)
Palle, Enric (author)
Instituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna
Peter, G. (author)
Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)
Piazza, D. (author)
Universität Bern,University of Bern
Piotto, Giampaolo P. (author)
Università Degli Studi di Padova,University of Padua,Istituto nazionale di astrofisica (INAF)
Pollacco, Don L. (author)
The University of Warwick
Queloz, D. (author)
Eidgenössische Technische Hochschule Zürich (ETH),Swiss Federal Institute of Technology in Zürich (ETH),University Of Cambridge
Ragazzoni, Roberto (author)
Università Degli Studi di Padova,University of Padua,Istituto nazionale di astrofisica (INAF)
Rando, N. (author)
European Space Research and Technology Centre (ESA ESTEC)
Rauer, H. (author)
Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR),Freie Universität Berlin
Ribas, I. (author)
Institut d'Estudis Espacials de Catalunya (IEEC),Institute of Space Studies of Catalonia (IEEC),Institut de Ciències de l'Espai (ICE) - CSIC,Institute of Space Sciences (ICE) - CSIC
Santos, N. C. (author)
Universidade do Porto,University of Porto
Scandariato, Gaetano (author)
Istituto nazionale di astrofisica (INAF)
Segransan, D. (author)
Université de Genève,University of Geneva
Simon, A.E. (author)
Universität Bern,University of Bern
Smith, A. M.S. (author)
Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)
Sousa, S.G. (author)
Universidade do Porto,University of Porto
Stalport, M. (author)
Universite de Liège,University of Liège
Steinberger, M. (author)
Szabó, Gy M. (author)
Eötvös Loránd University (ELTE)
Tuson, A. (author)
University Of Cambridge
Udry, S. (author)
Université de Genève,University of Geneva
Ulmer-Moll, S. (author)
Université de Genève,University of Geneva
Van Grootel, V. (author)
Universite de Liège,University of Liège
Venturini, J. (author)
Université de Genève,University of Geneva
Villaver, E. (author)
Universidad de la Laguna,University of La Laguna,Instituto de Astrofísica de Canarias
Walton, N. A. (author)
University Of Cambridge
Wilson, T.G. (author)
The University of Warwick
Wolter, D. (author)
Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)
Zingales, Tiziano (author)
Università Degli Studi di Padova,University of Padua,Istituto nazionale di astrofisica (INAF)
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 (creator_code:org_t)
2024
2024
English.
In: Astronomy and Astrophysics. - 0004-6361 .- 1432-0746. ; 686
  • Journal article (peer-reviewed)
Abstract Subject headings
Close  
  • HIP 41378 d is a long-period planet that has only been observed to transit twice, three years apart, with K2. According to stability considerations and a partial detection of the Rossiter- McLaughlin effect, Pd = 278.36 d has been determined to be the most likely orbital period. We targeted HIP 41378 d with CHEOPS at the predicted transit timing based on Pd = 278.36 d, but the observations show no transit. We find that large (> 22.4 h) transit timing variations (TTVs) could explain this non-detection during the CHEOPS observation window. We also investigated the possibility of an incorrect orbital solution, which would have major implications for our knowledge of this system. If Pd ≠ 278.36 d, the periods that minimize the eccentricity would be 101.22 d and 371.14 d. The shortest orbital period will be tested by TESS, which will observe HIP 41378 in Sector 88 starting in January 2025. Our study shows the importance of a mission like CHEOPS, which today is the only mission able to make long observations (i.e., from space) to track the ephemeris of long-period planets possibly affected by large TTVs.

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)

Keyword

HIP 41378
Planets and satellites
individual

Publication and Content Type

art (subject category)
ref (subject category)

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Sulis, S.
Borsato, L.
Grouffal, S.
Osborn, H. P.
Santerne, A.
Brandeker, A.
show more...
Günther, Maximil ...
Heitzmann, A.
Lendl, M.
Fridlund, Malcol ...
Gandolfi, D.
Alibert, Y.
Alonso, R.
Bárczy, T.
Barrado Navascue ...
Barros, S.C.C.
Baumjohann, W.
Beck, T.
Benz, W.
Bergomi, M.
Billot, N.
Bonfanti, A.
Broeg, C.
Collier Cameron, ...
Corral Van Damme ...
Correia, A.
Csizmadia, Szila ...
Cubillos, P. E.
Davies, M. B.
Deleuil, M.
Deline, A.
Delrez, L.
Demangeon, O.
Demory, B.O.
Derekas, A.
Edwards, Billy
Ehrenreich, D.
Erikson, Anders
Fortier, A.
Fossati, L.
Gazeas, K.
Gillon, Michaël
Gudel, M.
Helling, Ch.
Hoyer, S.
Isaak, K.
Kiss, L. L.
Korth, Judith
Lam, K. W.F.
Laskar, J.
des Etangs, A. L ...
Magrin, D.
Maxted, P.
Mordasini, C.
Nascimbeni, Vale ...
Olofsson, G.
Ottensamer, R.
Pagano, I.
Palle, Enric
Peter, G.
Piazza, D.
Piotto, Giampaol ...
Pollacco, Don L.
Queloz, D.
Ragazzoni, Rober ...
Rando, N.
Rauer, H.
Ribas, I.
Santos, N. C.
Scandariato, Gae ...
Segransan, D.
Simon, A.E.
Smith, A. M.S.
Sousa, S.G.
Stalport, M.
Steinberger, M.
Szabó, Gy M.
Tuson, A.
Udry, S.
Ulmer-Moll, S.
Van Grootel, V.
Venturini, J.
Villaver, E.
Walton, N. A.
Wilson, T.G.
Wolter, D.
Zingales, Tizian ...
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NATURAL SCIENCES
NATURAL SCIENCES
and Physical Science ...
and Astronomy Astrop ...
NATURAL SCIENCES
NATURAL SCIENCES
and Physical Science ...
and Other Physics To ...
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Astronomy and As ...
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Chalmers University of Technology

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