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HIP 41378 observed by CHEOPS: Where is planet d?

Sulis, S. and Borsato, L. and Grouffal, S. and Osborn, H. P. and Santerne, A. and Brandeker, A. and Günther, M. N. and Heitzmann, A. and Lendl, M. and Fridlund, M. and Gandolfi, D. and Alibert, Y. and Alonso Sobrino, R. and Bàrczy, T. and Barrado Navascues, D. and Barros, S. C. C. and Baumjohann, W. and Beck, T. and Benz, W. and Bergomi, M. and Billot, N. and Bonfanti, A. and Broeg, C. and Collier Cameron, A. and Corral Van Damme, C. and Correia, A. C. M. and Csizmadia, Sz. and Cubillos, P. E. and Davies, M. B. and Deleuil, M. and Deline, A. and Delrez, L. and Demangeon, O. D. S. and Demory, B. -O. and Derekas, A. and Edwards, B. and Ehrenreich, D. and Erikson, A. and Fortier, A. and Fossati, L. and Gazeas, K. and Gillon, M. and Güdel, M. and Helling, Ch. and Hoyer, S. and Isaak, K. G. and Kiss, L. L. and Korth, J. and Lam, K. W. F. and Laskar, J. and Lecavelier des Etangs, A. and Magrin, D. and Maxted, P. F. L. and Mordasini, C. and Nascimbeni, V. and Olofsson, G. and Ottensamer, R. and Pagano, I. and Palle, E. and Peter, G. and Piazza, D. and Piotto, G. and Pollacco, D. and Queloz, D. and Ragazzoni, R. and Rando, N. and Rauer, H. and Ribas, I. and Santos, N. C. and Scandariato, G. and Ségransan, D. and Simon, A. E. and Smith, A. M. S. and Sousa, S. G. and Stalport, M. and Steinberger, M. and Szabó, Gy. M. and Tuson, A. and Udry, S. and Ulmer-Moll, S. and Van Grootel, V. and Venturini, J. and Villaver, E. and Walton, N. A. and Wilson, T. G. and Wolter, D. and Zingales, T. (2024) HIP 41378 observed by CHEOPS: Where is planet d? Astronomy and Astrophysics, 686, L18. EDP Sciences. doi: 10.1051/0004-6361/202449689. ISSN 0004-6361.

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Official URL: https://www.aanda.org/articles/aa/full_html/2024/06/aa49689-24/aa49689-24.html

Abstract

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.

Item URL in elib:https://elib.dlr.de/209728/
Document Type:Article
Title:HIP 41378 observed by CHEOPS: Where is planet d?
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Sulis, S.Aix Marseille Univ., CNRS, CNES, LAM, 38 Rue Frédéric Joliot-Curie, 13388, Marseille, FranceUNSPECIFIEDUNSPECIFIED
Borsato, L.Dipartimento di Fisica e Astronomia, Universita degli Studi di Padova, via Marzolo 8, 35131 Padova, Italyhttps://orcid.org/0000-0001-8627-9628UNSPECIFIED
Grouffal, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Osborn, H. P.Physikalisches Institut, University of Bern, Sidlerstrasse 5, 3012, Bern, Switzerland; Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USAUNSPECIFIEDUNSPECIFIED
Santerne, A.Aix Marseille Universite, CNRS, LAM (Laboratoire d Astrophysique de Marseille) UMR 7326, 13388, Marseille, Francehttps://orcid.org/0000-0002-3586-1316UNSPECIFIED
Brandeker, A.Department of Astronomy , Stockholm University, SE-106 91 Stockholm, SwedenUNSPECIFIEDUNSPECIFIED
Günther, M. N.European Space Agency (ESA), European Space Research and Technology Centre (ESTEC), Keplerlaan 1, 2201 AZ, Noordwijk, The NetherlandsUNSPECIFIEDUNSPECIFIED
Heitzmann, A.Observatoire Astronomique de l'Université de Genève, Chemin Pegasi 51, 1290, Versoix, SwitzerlandUNSPECIFIEDUNSPECIFIED
Lendl, M.Observatoire de Genève, Université de Genève, Chemin Pegasi, 51, 1290, Versoix, SwitzerlandUNSPECIFIEDUNSPECIFIED
Fridlund, M.Department of Space, Earth and Environment, Onsala Space Observatory, Chalmers University of Technology, SE-439 92, Onsala, Sweden; Leiden Observatory, University of Leiden, PO Box 9513, 2300 RA, Leiden, The NetherlandsUNSPECIFIEDUNSPECIFIED
Gandolfi, D.Dipartimento di Fisica, Universitá di Torino, Via P. Giuria 1, I-10125, Torino, ItalyUNSPECIFIEDUNSPECIFIED
Alibert, Y.University of Bern, SwitzerlandUNSPECIFIEDUNSPECIFIED
Alonso Sobrino, R.Instituto de Astrofisica de Canarias (IAC), 38205, La Laguna, Tenerife, Spain; Departamento de Astrofisica, Universidad de La Laguna, 38206, La Laguna, Tenerife, SpainUNSPECIFIEDUNSPECIFIED
Bàrczy, T.Admatis, Miskolc, HungaryUNSPECIFIEDUNSPECIFIED
Barrado Navascues, D.Depto. de Astrofisica, Centro de Astrobiologia (CSIC-INTA), ESAC Campus, E-28692 Villanueva de la Cañada, Madrid, SpainUNSPECIFIEDUNSPECIFIED
Barros, S. C. C.Instituto de Astrofisica e Ciencias do Espaco, Universidade do Porto, CAUP, Rua das Estrelas, 4150-762 Porto, Portugalhttps://orcid.org/0000-0003-2434-3625UNSPECIFIED
Baumjohann, W.Space Research Institute, Austrian Academy of Sciences, AustriaUNSPECIFIEDUNSPECIFIED
Beck, T.Center for Space and Habitability, University of Bern, Gesellschaftsstraße 6, 3012, Bern, SwitzerlandUNSPECIFIEDUNSPECIFIED
Benz, W.Physikalisches Institut,University of Bern, Sidlerstraße 5, CH-3012 Bern, SwitzerlandUNSPECIFIEDUNSPECIFIED
Bergomi, M.INAF - Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, 35122 Padova, ItalyUNSPECIFIEDUNSPECIFIED
Billot, N.Observatoire de Genève, University of Geneva, SwitzerlandUNSPECIFIEDUNSPECIFIED
Bonfanti, A.Space Research Institute, Austrian Academy of Sciences, AustriaUNSPECIFIEDUNSPECIFIED
Broeg, C.Physikalisches Institut, University of Bern, Bern, SwitzerlandUNSPECIFIEDUNSPECIFIED
Collier Cameron, A.SUPA, School of Physics and Astronomy, University of St. Andrews, North Haugh, Fife KY16 9SS, UKhttps://orcid.org/0000-0002-8863-7828UNSPECIFIED
Corral Van Damme, C.ESA/ESTEC, NiederlandeUNSPECIFIEDUNSPECIFIED
Correia, A. C. M.CFisUC, Department of Physics, University of Coimbra, 3004-516 Coimbra, PortugalUNSPECIFIEDUNSPECIFIED
Csizmadia, Sz.UNSPECIFIEDhttps://orcid.org/0000-0001-6803-9698UNSPECIFIED
Cubillos, P. E.INAF, Osservatorio Astrofisico di Torino, Via Osservatorio, 20, 10025, Pino Torinese, To, Italy; Space Research Institute, Austrian Academy of Sciences, Schmiedlstrasse 6, 8042, Graz, AustriaUNSPECIFIEDUNSPECIFIED
Davies, M. B.Lund Observatory, Department of Astronomy and Theoretical Physics, Lund University, 22100, Lund, SwedenUNSPECIFIEDUNSPECIFIED
Deleuil, M.Aix-Marseille Universite, CNRS, CNES, LAM, Marseille, FranceUNSPECIFIEDUNSPECIFIED
Deline, A.Observatoire de Genève, University of Geneva, SwitzerlandUNSPECIFIEDUNSPECIFIED
Delrez, L.Institut d Astrophysique et de Geophysique, Universite de Liege, Allee du 6 Aout, 17, Bat. B5C, Liege 1, BelgiumUNSPECIFIEDUNSPECIFIED
Demangeon, O. D. S.Instituto de Astrofísica e Ciências do Espaço, Universidade do Porto, CAUP, Rua das Estrelas, 4150-762, Porto, PortugalUNSPECIFIEDUNSPECIFIED
Demory, B. -O.Center for Space and Habitability, University of Bern, SwitzerlandUNSPECIFIEDUNSPECIFIED
Derekas, A.ELTE Eötvös Loránd University, Gothard Astrophysical Observatory, Szent Imre h. u. 112, 9700 Szombathely, HungaryUNSPECIFIEDUNSPECIFIED
Edwards, B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ehrenreich, D.Observatoire de Genève, University of Geneva, Switzerlandhttps://orcid.org/0000-0001-9704-5405UNSPECIFIED
Erikson, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Fortier, A.Physikalisches Institut, University of Bern, Bern, Switzerlandhttps://orcid.org/0000-0001-8450-3374UNSPECIFIED
Fossati, L.Space Research Institute, Austrian Academy of Sciences, Schmiedlstrasse 6, A-8042 Graz, Austriahttps://orcid.org/0000-0003-4426-9530UNSPECIFIED
Gazeas, K.Section of Astrophysics, Astronomy and Mechanics, Department of Physics, AthensUNSPECIFIEDUNSPECIFIED
Gillon, M.Astrobiology Research Unit, Université de Liège, 19C Allée du 6 Août, 4000, Liège, BelgiumUNSPECIFIEDUNSPECIFIED
Güdel, M.University of Vienna, Department of Astrophysics, Türkenschanzstrasse 17, 1180, Vienna, AustriaUNSPECIFIEDUNSPECIFIED
Helling, Ch.Space Research Institute, Austrian Academy of Sciences, Graz, AustriaUNSPECIFIEDUNSPECIFIED
Hoyer, S.Aix Marseille Univ, CNRS, CNES, LAM, F-13013 Marseille, FranceUNSPECIFIEDUNSPECIFIED
Isaak, K. G.Science and Operations Department - Science Division (SCI-SC), Directorate of Science, European Space Agency (ESA), European Space Research and Technology Centre (ESTEC), Keplerlaan 1, 2201-AZ, Noordwijk, The NetherlandsUNSPECIFIEDUNSPECIFIED
Kiss, L. L.Konkoly Observatory, Research Centre for Astronomy and Earth, Budapest, HungaryUNSPECIFIEDUNSPECIFIED
Korth, J.Lund Observatory, Division of Astrophysics, Department of Physics, Lund University, Lund, SwedenUNSPECIFIEDUNSPECIFIED
Lam, K. W. F.UNSPECIFIEDhttps://orcid.org/0000-0002-9910-6088UNSPECIFIED
Laskar, J.IMCCE, UMR8028 CNRS, Observatoire de Paris, PSL Univ.,Sorbonne Univ., 77 av. Denfert-Rochereau, 75014 Paris, FranceUNSPECIFIEDUNSPECIFIED
Lecavelier des Etangs, A.Institut d Astrophysique de Paris, CNRS, UMR 7095 & Sorbonne Universites, UPMC Paris 6, 98 bis bd Arago, 75014 Paris, FranceUNSPECIFIEDUNSPECIFIED
Magrin, D.INAF,OsservatorioAstronomicodiPadova,Vicolodell’Osservatorio 5, 35122 Padova, ItalyUNSPECIFIEDUNSPECIFIED
Maxted, P. F. L.Astrophysics Group, Keele University, Staffordshire ST5 5BG, UKUNSPECIFIEDUNSPECIFIED
Mordasini, C.Physikalisches Institut, University of Bern, Gesellschaftsstrasse 6, 3012, Bern, SwitzerlandUNSPECIFIEDUNSPECIFIED
Nascimbeni, V.INAF, Osservatorio Astrofisico di Catania, Via S. Sofia 78, I-95123 Catania, ItalyUNSPECIFIEDUNSPECIFIED
Olofsson, G.Department of Astronomy, Stockholm University, AlbaNova University Center, 10691 Stockholm, SwedenUNSPECIFIEDUNSPECIFIED
Ottensamer, R.Dept. of Astrophysics, University of Vienna, AustriaUNSPECIFIEDUNSPECIFIED
Pagano, I.INAF – Osservatorio Astrofisico di Catania, via S. Sofia 78, 95123 Catania, ItalyUNSPECIFIEDUNSPECIFIED
Palle, E.Instituto de Astrofısica de Canarias, 38205 La Laguna, Tenerife, SpainUNSPECIFIEDUNSPECIFIED
Peter, G.UNSPECIFIEDhttps://orcid.org/0000-0001-6101-2513UNSPECIFIED
Piazza, D.physics institute, space research & planetary sciences, university of bern, sidlerstr. 5, ch-3012 bern, switzerlandUNSPECIFIEDUNSPECIFIED
Piotto, G.INAF – Osservatorio Astronomico di Padova, vicolo dell Osservatorio 5, 35122 Padova, ItalyUNSPECIFIEDUNSPECIFIED
Pollacco, D.Department of Physics, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, UK; Centre for Exoplanets and Habitability, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, UKUNSPECIFIEDUNSPECIFIED
Queloz, D.ETH Zurich, Department of Physics, Wolfgang-Pauli-Strasse 2, 8093, Zurich, Switzerland; Cavendish Laboratory, JJ Thomson Avenue, Cambridge, CB3 0HE, UKUNSPECIFIEDUNSPECIFIED
Ragazzoni, R.Dipartimento di Fisica e Astronomia, Universita degli Studi di Padova, Vicolo dell Osservatorio 3, 35122 Padova, ItalyUNSPECIFIEDUNSPECIFIED
Rando, N.ESA/ESTEC, Noordwijk, NiederlandeUNSPECIFIEDUNSPECIFIED
Rauer, H.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ribas, I.Institut de Ciències de l’Espai (CSIC), Campus UAB, c/ de Can Magrans s/n, Barcelona, Spain; Institut d’Estudis Espacials de Catalunya, Barcelona, SpainUNSPECIFIEDUNSPECIFIED
Santos, N. C.Instituto de Astrofisica e Ciencias do Espaco, Universidade do Porto, CAUP, Rua das Estrelas, 4150-762 Porto, Portugal; Departamento de Fisica e Astronomia, Faculdade de Ciencias, Universidade do Porto, Rua Campo Alegre, 4169-007 Porto, PortugalUNSPECIFIEDUNSPECIFIED
Scandariato, G.INAF, Osservatorio Astrofisico di Catania, Via S. Sofia 78, I-95123 Catania, ItalyUNSPECIFIEDUNSPECIFIED
Ségransan, D.Geneva Observatory, University of Geneva, Chemin Pegasi 51, CH-1290 Versoix, SwitzerlandUNSPECIFIEDUNSPECIFIED
Simon, A. E.Center for Space and Habitability, University of Bern, SwitzerlandUNSPECIFIEDUNSPECIFIED
Smith, A. M. S.UNSPECIFIEDhttps://orcid.org/0000-0002-2386-4341UNSPECIFIED
Sousa, S. G.Instituto de Astrofísica e Ciências do Espaço, Universidade do Porto, CAUP, Rua das Estrelas, 4150-762, Porto, PortugalUNSPECIFIEDUNSPECIFIED
Stalport, M.Geneva Observatory, University of Geneva, Chemin des Mailettes 51, 1290, Versoix, SwitzerlandUNSPECIFIEDUNSPECIFIED
Steinberger, M.Space Research Institute, Austrian Academy of Sciences, Schmiedlstrasse 6, A-8042 Graz, AustriaUNSPECIFIEDUNSPECIFIED
Szabó, Gy. M.ELTE Eötvös Loránd University, Gothard Astrophysical Observatory, 9700, Szombathely, Szent Imre h. u. 112, Hungary ; MTA-ELTE Exoplanet Research Group, 9700, Szombathely, Szent Imre h. u. 112, HungaryUNSPECIFIEDUNSPECIFIED
Tuson, A.Astrophysics Group, Cavendish Laboratory, University of Cambridge, J.J. Thomson Avenue, Cambridge, CB3 0HE, UKUNSPECIFIEDUNSPECIFIED
Udry, S.Department of Astronomy, University of Geneva, Chemin Pegasi 51, Versoix, CH-1290, SwitzerlandUNSPECIFIEDUNSPECIFIED
Ulmer-Moll, S.Observatoire de Genève, Université de Genève, Chemin Pegasi, 51, 1290, Versoix, SwitzerlandUNSPECIFIEDUNSPECIFIED
Van Grootel, V.Space sciences, Technologies and Astrophysics Research (STAR) Institute, Université de Liège, Allée du 6 Août 19C, 4000 Liège, BelgiumUNSPECIFIEDUNSPECIFIED
Venturini, J.Observatoire Astronomique de l'Université de Genève, Chemin Pegasi 51, 1290, Versoix, SwitzerlandUNSPECIFIEDUNSPECIFIED
Villaver, E.Instituto de Astrofisica de Canarias, Via Lactea s/n, 38200, La Laguna, Tenerife, Spain; Departamento de Astrofisica, Universidad de La Laguna, Astrofísico Francisco Sanchez s/n, 38206, La Laguna, Tenerife, SpainUNSPECIFIEDUNSPECIFIED
Walton, N. A.Institute of Astronomy, University of Cambridge, Cambridge, UKUNSPECIFIEDUNSPECIFIED
Wilson, T. G.Department of Physics, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, UKUNSPECIFIEDUNSPECIFIED
Wolter, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Zingales, T.Dipartimento di Fisica e Astronomia "Galileo Galilei", Universita degli Studi di Padova, Vicolo dell'Osservatorio 3, 35122, Padova, Italy; INAF, Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, 35122, Padova, ItalyUNSPECIFIEDUNSPECIFIED
Date:2024
Journal or Publication Title:Astronomy and Astrophysics
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:686
DOI:10.1051/0004-6361/202449689
Page Range:L18
Publisher:EDP Sciences
ISSN:0004-6361
Status:Published
Keywords:planets and satellites: individual: HIP 41378, Astrophysics - Earth and Planetary Astrophysics
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Space Exploration
DLR - Research theme (Project):R - CHEOPS Science, R - Project CHEOPS
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Extrasolar Planets and Atmospheres
Institute of Planetary Research > Leitungsbereich PF
Institute of Planetary Research > Planetary Sensor Systems
Institute of Optical Sensor Systems > Space Instruments
Deposited By: Smith, Dr Alexis M S
Deposited On:03 Dec 2024 08:06
Last Modified:03 Dec 2024 08:06

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