elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

A new dynamical modeling of the WASP-47 system with CHEOPS observations

Nascimbeni, V. and Borsato, L. and Zingales, T. and Piotto, G. and Pagano, I. and Beck, M. and Broeg, C. and Ehrenreich, D. and Hoyer, S. and Majidi, F. Z. and Granata, V. and Sousa, S. G. and Wilson, T. G. and Van Grootel, V. and Bonfanti, A. and Salmon, S. and Mustill, A. J. and Delrez, L. and Alibert, Y. and Alonso, R. and Anglada, G. and Bàrczy, T. and Barrado, D. and Barros, S. C. C. and Baumjohann, W. and Beck, T. and Benz, W. and Bergomi, M. and Billot, N. and Bonfils, X. and Brandeker, A. and Cabrera, J. and Charnoz, S. and Collier Cameron, A. and Csizmadia, Sz. and Cubillos, P. E. and Davies, M. B. and Deleuil, M. and Deline, A. and Demangeon, O. D. S. and Demory, B. -O. and Erikson, A. and Fortier, A. and Fossati, L. and Fridlund, M. and Gandolfi, D. and Gillon, M. and Güdel, M. and Isaak, K. G. and Kiss, L. L. and Laskar, J. and Lecavelier des Etangs, A. and Lendl, M. and Lovis, C. and Luque, R. and Magrin, D. and Maxted, P. F. L. and Mordasini, C. and Olofsson, G. and Ottensamer, R. and Palle, E. and Peter, G. and Piazza, D. and Pollacco, D. and Queloz, D. and Ragazzoni, R. and Rando, N. and Ratti, F. and Rauer, H. and Ribas, I. and Santos, N. C. and Scandariato, G. and Segransan, D. and Simon, A. E. and Smith, A. M. S. and Steinberger, M. and Steller, M. and Szabó, Gy. M. and Thomas, N. and Udry, S. and Venturini, J. and Walton, N. A. and Wolter, D. (2023) A new dynamical modeling of the WASP-47 system with CHEOPS observations. Astronomy & Astrophysics, 673, A42. EDP Sciences. doi: 10.1051/0004-6361/202245486. ISSN 0004-6361.

[img] PDF - Published version
1MB

Official URL: https://www.aanda.org/articles/aa/full_html/2023/05/aa45486-22/aa45486-22.html

Abstract

Among the hundreds of known hot Jupiters (HJs), only five have been found to have companions on short-period orbits. Within this rare class of multiple planetary systems, the architecture of WASP-47 is unique, hosting an HJ (planet-b) with both an inner and an outer sub-Neptunian mass companion (-e and -d, respectively) as well as an additional non-transiting, long-period giant (-c). The small period ratio between planets -b and -d boosts the transit time variation (TTV) signal, making it possible to reliably measure the masses of these planets in synergy with the radial velocity (RV) technique. In this paper, we present new space- and ground-based photometric data of WASP-47b and WASP-47-d, including 11 unpublished light curves from the ESA mission CHaracterising ExOPlanet Satellite (CHEOPS). We analyzed the light curves in a homogeneous way together with all the publicly available data to carry out a global N-body dynamical modeling of the TTV and RV signals. We retrieved, among other parameters, a mass and density for planet -d of Md = 15.5 ± 0.8 M⊕ and ρd = 1.69 ± 0.22 g cm−3, which is in good agreement with the literature and consistent with a Neptune-like composition. For the inner planet (-e), we found a mass and density of Me = 9.0 ± 0.5 M⊕ and ρe = 8.1 ± 0.5 g cm−3, suggesting an Earth-like composition close to other ultra-hot planets at similar irradiation levels. Though this result is in agreement with previous RV plus TTV studies, it is not in agreement with the most recent RV analysis (at 2.8σ), which yielded a lower density compatible with a pure silicate composition. This discrepancy highlights the still unresolved issue of suspected systematic offsets between RV and TTV measurements. In this paper, we also significantly improve the orbital ephemerides of all transiting planets, which will be crucial for any future follow-up.

Item URL in elib:https://elib.dlr.de/195172/
Document Type:Article
Title:A new dynamical modeling of the WASP-47 system with CHEOPS observations
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Nascimbeni, V.INAF – Osservatorio Astronomico di Padova, vicolo dell Osservatorio 5, 35122 Padova, ItalyUNSPECIFIEDUNSPECIFIED
Borsato, L.Dipartimento di Fisica e Astronomia, Universita degli Studi di Padova, via Marzolo 8, 35131 Padova, ItalyUNSPECIFIEDUNSPECIFIED
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
Piotto, G.INAF – Osservatorio Astronomico di Padova, vicolo dell Osservatorio 5, 35122 Padova, ItalyUNSPECIFIEDUNSPECIFIED
Pagano, I.INAF – Osservatorio Astrofisico di Catania, Via S.Sofia 78, 95123 Catania, ItalyUNSPECIFIEDUNSPECIFIED
Beck, M.Université de Genève, SwitzerlandUNSPECIFIEDUNSPECIFIED
Broeg, C.Physikalisches Institut, University of Bern, Bern, SwitzerlandUNSPECIFIEDUNSPECIFIED
Ehrenreich, D.Observatoire de Genève, University of Geneva, Switzerlandhttps://orcid.org/0000-0001-9704-5405UNSPECIFIED
Hoyer, S.Laboratoire d’Astrophysique de Marseille, Univ. de Provence, FranceUNSPECIFIEDUNSPECIFIED
Majidi, F. Z.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
Granata, V.INAF – Osservatorio Astronomico di Padova, vicolo dell Osservatorio 5, 35122 Padova, ItalyUNSPECIFIEDUNSPECIFIED
Sousa, S. G.Instituto de Astrofisica e Ciencias do Espaco, Universidade do Porto, CAUP, Rua das Estrelas, 4150-762 Porto, PortugalUNSPECIFIEDUNSPECIFIED
Wilson, T. G.School of Physics and Astronomy, St. Andrews, UKhttps://orcid.org/0000-0001-8749-1962UNSPECIFIED
Van Grootel, V.STAR, Université de Liège, BelgiumUNSPECIFIEDUNSPECIFIED
Bonfanti, A.Space Research Institute, Austrian Academy of Sciences, AustriaUNSPECIFIEDUNSPECIFIED
Salmon, S.STAR, Université de Liège, BelgiumUNSPECIFIEDUNSPECIFIED
Mustill, A. J.Lund Observatory, Department of Astronomy and Theoretical Physics, Lund University, 22100, Lund, SwedenUNSPECIFIEDUNSPECIFIED
Delrez, L.Institut d’Astrophysique et de Geophysique, Universite de Liege, BelgiumUNSPECIFIEDUNSPECIFIED
Alibert, Y.Physikalisches Institut, University of Bern, Sidlerstrasse 5, 3012, Bern, SwitzerlandUNSPECIFIEDUNSPECIFIED
Alonso, R.Instituto de Astrofisica de Canarias (IAC), Via Lactea s/n 38200, La Laguna, SpainUNSPECIFIEDUNSPECIFIED
Anglada, G.Institut de Ciencies de l'Espai (ICE, CSIC), Campus UAB, Can Magrans s/n, 08193, Bellaterra, Spain; Institut d'Estudis Espacials de Catalunya (IEEC), Carrer del Gran Capità, 2, 08034, Barcelona, SpainUNSPECIFIEDUNSPECIFIED
Bàrczy, T.Admatis, Miskolc, HungaryUNSPECIFIEDUNSPECIFIED
Barrado, D.Departamento de Astrofisica, Centro de Astrobiologia (INTA-CSIC), Campus ESAC (ESA)Camino Bajo del Castillo s/n 28692 Villanueva de la Canada, SpainUNSPECIFIEDUNSPECIFIED
Barros, S. C. C.Instituto de Astrofisica e Ciencias do Espaco, Universidade do Porto, CAUP, Rua das Estrelas, 4150-762 Porto, PortugalUNSPECIFIEDUNSPECIFIED
Baumjohann, W.Space Research Institute, Graz, AustriaUNSPECIFIEDUNSPECIFIED
Beck, T.Center for Space and Habitability, University of Bern, Gesellschaftsstraße 6, 3012, Bern, SwitzerlandUNSPECIFIEDUNSPECIFIED
Benz, W.Physikalisches Institut, Universität Bern, CHUNSPECIFIEDUNSPECIFIED
Bergomi, M.INAF – Osservatorio Astronomico di Padova, Vicolo dell’Osservatorio 5, 35122 Padova, ItalyUNSPECIFIEDUNSPECIFIED
Billot, N.Observatoire de Genève, University of Geneva, SwitzerlandUNSPECIFIEDUNSPECIFIED
Bonfils, X.Institut de Planétologie et d'Astrophysique, University of Grenoble, FranceUNSPECIFIEDUNSPECIFIED
Brandeker, A.Department of Astronomy – Stockholm University, SE-106 91 Stockholm, SwedenUNSPECIFIEDUNSPECIFIED
Cabrera, J.UNSPECIFIEDhttps://orcid.org/0000-0001-6653-5487UNSPECIFIED
Charnoz, S.Université de Paris, Institut de physique du globe de Paris, CNRS, 75005, Paris, FranceUNSPECIFIEDUNSPECIFIED
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
Csizmadia, Sz.UNSPECIFIEDhttps://orcid.org/0000-0001-6803-9698UNSPECIFIED
Cubillos, P. E.Space Research Institute, Austrian Academy of Sciences, Schmiedlstrasse 6, 8041 Graz, AustriaUNSPECIFIEDUNSPECIFIED
Davies, M. B.Lund Observatory, Department of Astronomy and Theoretical Physics, Lund University, 22100, Lund, SwedenUNSPECIFIEDUNSPECIFIED
Deleuil, M.Aix Marseille Universite, CNRS, LAM (Laboratoire d Astrophysique de Marseille) UMR 7326, F-13388 Marseille, FranceUNSPECIFIEDUNSPECIFIED
Deline, A.Observatoire de Genève, University of Geneva, SwitzerlandUNSPECIFIEDUNSPECIFIED
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, Gesellsschaftstrasse 6, 3012, Bern, SwitzerlandUNSPECIFIEDUNSPECIFIED
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, 8042, Graz, AustriaUNSPECIFIEDUNSPECIFIED
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, Universita degli Studi di Torino, via Pietro Giuria 1, 10125, Torino, Italyhttps://orcid.org/0000-0001-8627-9628UNSPECIFIED
Gillon, M.Institut d’Astrophysique, Geophysique et Oceanographie, Universite de Liege, B-4000 Liege, BelgiumUNSPECIFIEDUNSPECIFIED
Güdel, M.Department of Astrophysics, University of Vienna, Tuerkenschanzstrasse 17, A-1180 Vienna, AustriaUNSPECIFIEDUNSPECIFIED
Isaak, K. G.ESA/ESTEC, Noordwijk, NiederlandeUNSPECIFIEDUNSPECIFIED
Kiss, L. L.Konkoly Observatory, Research Centre for Astronomy and Earth, Budapest, HungaryUNSPECIFIEDUNSPECIFIED
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
Lendl, M.Austrian Academy of Sciences, Space Research Institute, Graz, AustriaUNSPECIFIEDUNSPECIFIED
Lovis, C.Observatoire de l Universite de Geneve, 51 chemin des Maillettes, 1290 Sauverny, SwitzerlandUNSPECIFIEDUNSPECIFIED
Luque, R.Instituto de Astrofisica de Canarias (IAC), 38205, La Laguna, Tenerife, Spain; Departamento de Astrofisica, Universidad de La Laguna (ULL), 38206, La Laguna, Tenerife, SpainUNSPECIFIEDUNSPECIFIED
Magrin, D.INAF – Osservatorio Astronomico di Padova, Vicolo dell’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
Olofsson, G.Department of Astronomy, Stockholm University, AlbaNova University Center, 10691 Stockholm, SwedenUNSPECIFIEDUNSPECIFIED
Ottensamer, R.University of Vienna, Department of Astrophysics, AustriaUNSPECIFIEDUNSPECIFIED
Palle, E.Instituto de Astrofísica de Canarias, 38205 La Laguna, Tenerife, Spain | Departamento de Astrofisica, Universidad de La Laguna, 38206 La Laguna, 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
Pollacco, D.Department of Physics, University of Warwick, Coventry CV4 7AL, UKUNSPECIFIEDUNSPECIFIED
Queloz, D.Cavendish Laboratory, J J Thomson Avenue, Cambridge, CB3 0HE, UKUNSPECIFIEDUNSPECIFIED
Ragazzoni, R.INAF – Osservatorio Astronomico di Padova, Vicolo dell’Osservatorio 5, 35122 Padova, ItalyUNSPECIFIEDUNSPECIFIED
Rando, N.ESA/ESTEC, NiederlandeUNSPECIFIEDUNSPECIFIED
Ratti, F.ESA/ESTEC, NiederlandeUNSPECIFIEDUNSPECIFIED
Rauer, H.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ribas, I.Institut de Ciencies de l Espai (CSIC-IEEC), Carrer de Can Magrans, Campus UAB, E-08193 Bellaterra, 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
Segransan, D.Observatoire de Geneve, Universite de Geneve, 51 Chemin des Maillettes, 1290 Sauverny, SwitzerlandUNSPECIFIEDUNSPECIFIED
Simon, A. E.Physikalisches Institut, University of Bern, SwitzerlandUNSPECIFIEDUNSPECIFIED
Smith, A. M. S.UNSPECIFIEDhttps://orcid.org/0000-0002-2386-4341UNSPECIFIED
Steinberger, M.Space Research Institute, Austrian Academy of Sciences, Schmiedlstrasse 6, A-8042 Graz, AustriaUNSPECIFIEDUNSPECIFIED
Steller, M.Space Research Institute, Austrian Academy of Sciences, Schmiedlstrasse 6, 8042, Graz, AustriaUNSPECIFIEDUNSPECIFIED
Szabó, Gy. M.Department of Experimental Physics & Astronomical Observatory, University of Szeged, Szeged, HungaryUNSPECIFIEDUNSPECIFIED
Thomas, N.Physikalisches Institut, University of Bern, Sidlerstrasse 5, 3012, Bern, SwitzerlandUNSPECIFIEDUNSPECIFIED
Udry, S.Observatoire de Geneve, Sauverny, SwitzerlandUNSPECIFIEDUNSPECIFIED
Venturini, J.Observatoire Astronomique de l'Université de Genève, Chemin Pegasi 51, 1290, Versoix, SwitzerlandUNSPECIFIEDUNSPECIFIED
Walton, N. A.Institute of Astronomy, University of Cambridge, Cambridge, UKUNSPECIFIEDUNSPECIFIED
Wolter, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Date:3 May 2023
Journal or Publication Title:Astronomy & Astrophysics
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:673
DOI:10.1051/0004-6361/202245486
Page Range:A42
Publisher:EDP Sciences
ISSN:0004-6361
Status:Published
Keywords:techniques: photometric, planets and satellites: detection, planets and satellites: general, Astrophysics - Earth and Planetary Astrophysics, Astrophysics - Solar and Stellar 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 Optical Sensor Systems > Space Instruments
Institute of Planetary Research > Planetary Sensor Systems
Deposited By: Smith, Dr Alexis M S
Deposited On:26 May 2023 12:41
Last Modified:15 Dec 2023 09:06

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Website and database design: Copyright © German Aerospace Center (DLR). All rights reserved.