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

The hot dayside and asymmetric transit of WASP-189 b seen by CHEOPS

Lendl, M. and Csizmadia, Szilard and Deline, A. and Fossati, L. and Kitzmann, D. and Heng, K. and Hoyer, S. and Salmon, S. and Benz, W. and Broeg, Chris and Ehrenreich, David and Fortier, Andrea and Queloz, D. and Bonfanti, A. and Brandeker, A. and Collier Cameron, A and Delrez, L. and Garcia Munoz, A. and Hooton, M. J. and Maxted, P. F. L. and Morris, B. M. and Van Grootel, V. and Wilson, T. G. and Alibert, Y. and Alonso, R and Asquier, J. and Bandy, T. and Bàrczy, T. and Barrado, D. and Barros, S. C. C. and Baumjohann, W. and Beck, M. and Beck, T. and Bekkelien, A. and Bergomi, M. and Billot, N. and Biondi, F. and Bonfils, X. and Bourrier, V. and Busch, M.-D. and Cabrera Perez, Juan and Cessa, Virginie and Charnoz, S. and Chazelas, B. and Corral Van Damme, C. and Davies, M. B. and Deleuil, M. and Demangeon, O. D. S. and Demory, B.-O. and Erikson, A and Farinato, J. and Fridlund, M and Futyan, D. and Gandolfi, D. and Gillon, M. and Guterman, P and Hasiba, J and Hernandez, E. and Isaak, K. G. and Kiss, L. and Kuntzer, T. and Lecavelier des Etangs, A. and Lüftinger, T and Laskar, J. and Lovis, C. and Magrin, D. and Malvasio, L. and Marafatto, L. and Michaelis, Harald and Munari, M. and Nascimbeni, V. and Olofsson, G. and Ottacher, H and Ottensamer, R. and Pagano, I. and Palle, E. and Peter, Gisbert and Piazza, D. and Piotto, G. and Pollacco, D. and Ratti, F. and Rauer, H and Ragazzoni, R. and Rando, N. and Ribas, I. and Rieder, M. and Rohlfs, R. and Safa, F. and Santos, N. C. and Scandariato, G. and Segransan, D. and Simon, A. E. and Singh, V. and Smith, Alexis M S and Sordet, M. and Sousa, S. G. and Steller, Manfred and Szabo, Gy. M. and Thomas, N. and Tschentscher, M. and Udry, S. and Viotto, V. and Walter, Ingo and Walton, NA and Wildi, F. and Wolter, D. (2020) The hot dayside and asymmetric transit of WASP-189 b seen by CHEOPS. Astronomy & Astrophysics, 643 (A94), pp. 1-10. EDP Sciences. doi: 10.1051/0004-6361/202038677. ISSN 0004-6361.

[img] PDF - Preprint version (submitted draft)
4MB

Official URL: https://www.aanda.org/component/article?access=doi&doi=10.1051/0004-6361/202038677

Abstract

The CHEOPS space mission dedicated to exoplanet follow-up was launched in December 2019, equipped with the capacity to perform photometric measurements at the 20 ppm level. As CHEOPS carries out its observations in a broad optical passband, it can provide insights into the reflected light from exoplanets and constrain the short-wavelength thermal emission for the hottest of planets by observing occultations and phase curves. Here, we report the first CHEOPS observation of an occultation, namely, that of the hot Jupiter WASP-189 b, a MP ≈ 2MJ planet orbiting an A-type star. We detected the occultation of WASP-189 b at high significance in individual measurements and derived an occultation depth of dF = 87:9 ± 4:3 ppm based on four occultations. We compared these measurements to model predictions and we find that they are consistent with an unreflective atmosphere heated to a temperature of 3435 ± 27 K, when assuming inefficient heat redistribution. Furthermore, we present two transits of WASP-189 b observed by CHEOPS. These transits have an asymmetric shape that we attribute to gravity darkening of the host star caused by its high rotation rate. We used these measurements to refine the planetary parameters, finding a ∼ 25% deeper transit compared to the discovery paper and updating the radius of WASP-189 b to 1:619 ± 0:021RJ. We further measured the projected orbital obliquity to be λ = 86:4+2:9−4:4 deg, a value that is in good agreement with a previous measurement from spectroscopic observations, and derived a true obliquity of Ψ = 85:4 ± 4:3 deg. Finally, we provide reference values for the photometric precision attained by the CHEOPS satellite: for the V=6.6 mag star, and using a one-hour binning, we obtain a residual RMS between 10 and 17 ppm on the individual light curves, and 5.7 ppm when combining the four visits.

Item URL in elib:https://elib.dlr.de/134381/
Document Type:Article
Title:The hot dayside and asymmetric transit of WASP-189 b seen by CHEOPS
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Lendl, M.Space Research Institute, Austrian Academy of SciencesUNSPECIFIED
Csizmadia, Szilardszilard.csizmadia (at) dlr.deUNSPECIFIED
Deline, A.Université de GenèveUNSPECIFIED
Fossati, L.Space Research Institute, Austrian Academy of Sciences, Schmiedlstrasse 6, 8042, Graz, AustriaUNSPECIFIED
Kitzmann, D.Center for Space and Habitability, University of Bern, Gesellschaftsstraße 6, 3012, Bern, SwitzerlandUNSPECIFIED
Heng, K.Center for Space and Habitability, University of Bern, Gesellschaftsstraße 6, 3012, Bern, SwitzerlandUNSPECIFIED
Hoyer, S.Laboratoire d’Astrophysique de Marseille, Univ. de Provence, FranceUNSPECIFIED
Salmon, S.STAR, Université de Liège, BelgiumUNSPECIFIED
Benz, W.Physikalisches Institut, University of Bern, SchweizUNSPECIFIED
Broeg, ChrisUniversity of Bern, SwitzerlandUNSPECIFIED
Ehrenreich, DavidUniversity of Geneva, SwitzerlandUNSPECIFIED
Fortier, AndreaUniversity of Bern, SwitzerlandUNSPECIFIED
Queloz, D.Cavendish Laboratory, J J Thomson Avenue, Cambridge CB3 0HE, UKUNSPECIFIED
Bonfanti, A.Space Research Institute, Austrian Academy of Sciences, AustriaUNSPECIFIED
Brandeker, A.Department of Astronomy , Stockholm University, SE-106 91 Stockholm, SwedenUNSPECIFIED
Collier Cameron, AUniversity of St AndrewsUNSPECIFIED
Delrez, L.Institut d’Astrophysique et de Geophysique, Universite de Liege, BelgiumUNSPECIFIED
Garcia Munoz, A.Zentrum für Astronomie und Astrophysik, Technische Universität Berlin, Hardenbergstra_e 36, 10623 Berlin, GermanyUNSPECIFIED
Hooton, M. J.University of Bern, SwitzerlandUNSPECIFIED
Maxted, P. F. L.Astrophysics Group, Keele University, UKUNSPECIFIED
Morris, B. M.Center for Space and Habitability, University of Bern, SwitzerlandUNSPECIFIED
Van Grootel, V.STAR, Université de Liège, BelgiumUNSPECIFIED
Wilson, T. G.School of Physics and Astronomy, St. Andrews, UKUNSPECIFIED
Alibert, Y.University of Bern, SwitzerlandUNSPECIFIED
Alonso, RInstituto de Astrofísica de Canarias, E-38205 La Laguna, Tenerife,UNSPECIFIED
Asquier, J.ESA/ESTEC, NiederlandeUNSPECIFIED
Bandy, T.Physikalisches Institut,University of Bern, Sidlerstraße 5, CH-3012 Bern, SwitzerlandUNSPECIFIED
Bàrczy, T.Admatis, Miskolc, HungaryUNSPECIFIED
Barrado, D.Departamento de Astrofisica, Centro de Astrobiologia (INTA-CSIC), Campus ESAC (ESA)Camino Bajo del Castillo s/n 28692 Villanueva de la Canada, SpainUNSPECIFIED
Barros, S. C. C.Instituto de Astrofisica e Ciencias do Espaco, Universidade do Porto, CAUP, Rua das Estrelas, 4150-762 Porto, PortugalUNSPECIFIED
Baumjohann, W.Space Research Institute, Graz, AustriaUNSPECIFIED
Beck, M.Université de Genève, SwitzerlandUNSPECIFIED
Beck, T.Center for Space and Habitability, University of Bern, Gesellschaftsstraße 6, 3012, Bern, SwitzerlandUNSPECIFIED
Bekkelien, A.Université de Genève, SwitzerlandUNSPECIFIED
Bergomi, M.INAF – Osservatorio Astronomico di Padova, Vicolo dell’Osservatorio 5, 35122 Padova, ItalyUNSPECIFIED
Billot, N.Université de Genève, SwitzerlandUNSPECIFIED
Biondi, F.INAF – Osservatorio Astronomico di Padova, Vicolo dell’Osservatorio 5, 35122 Padova, ItalyUNSPECIFIED
Bonfils, X.Université Grenoble Alpes, FranceUNSPECIFIED
Bourrier, V.Université de Genève, SwitzerlandUNSPECIFIED
Busch, M.-D.University of Bern, SwitzerlandUNSPECIFIED
Cabrera Perez, JuanJuan.Cabrera (at) dlr.dehttps://orcid.org/0000-0001-6653-5487
Cessa, VirginieUniversity of Bern, SwitzerlandUNSPECIFIED
Charnoz, S.Institut de Physique du Globe de Paris, FranceUNSPECIFIED
Chazelas, B.Universite de Geneve, SwitzerlandUNSPECIFIED
Corral Van Damme, C.ESA/ESTEC, NiederlandeUNSPECIFIED
Davies, M. B.Lund Observatory, Department of Astronomy and Theoretical Physics, Lund University, 22100, Lund, SwedenUNSPECIFIED
Deleuil, M.Aix-Marseille Universite, CNRS, CNES, LAM, Marseille, FranceUNSPECIFIED
Demangeon, O. D. S.Laboratoire d’Astrophysique de Marseille, Univ. de Provence, FranceUNSPECIFIED
Demory, B.-O.Observatoire de GeneveUNSPECIFIED
Erikson, Aanders.erikson (at) dlr.deUNSPECIFIED
Farinato, J.INAF – Osservatorio Astronomico di Padova, Vicolo dell’Osservatorio 5, 35122 Padova, ItalyUNSPECIFIED
Fridlund, MLeiden Observatory, University of Leiden, PO Box 9513, 2300 RA,UNSPECIFIED
Futyan, D.Universite de Geneve, SwitzerlandUNSPECIFIED
Gandolfi, D.INAF, Osservatorio Astrofisico di Torino, ItalyUNSPECIFIED
Gillon, M.Institut d'Astrophysique et de Géophysique, Universitée de Liège, Allée du 6 août 17, B-4000 Liège, BelgiumUNSPECIFIED
Guterman, PLAM Université de ProvenceUNSPECIFIED
Hasiba, JÖsterreichische Akademie der WissenschaftenUNSPECIFIED
Hernandez, E.Center for Space and Habitability, Bern, SwitzerlandUNSPECIFIED
Isaak, K. G.ESA/ESTEC, NiederlandeUNSPECIFIED
Kiss, L.Konkoly Observatory, Research Centre for Astronomy and Earth, Budapest, HungaryUNSPECIFIED
Kuntzer, T.Universite de Geneve, SwitzerlandUNSPECIFIED
Lecavelier des Etangs, A.Institut d Astrophysique de Paris, CNRS, UMR 7095 & Sorbonne Universites, UPMC Paris 6, 98 bis bd Arago, 75014 Paris, FranceUNSPECIFIED
Lüftinger, TUniversity of Vienna, Dept. of Astrophysics, Türkenschanzstr. 17, 1180, Vienna, AustriaUNSPECIFIED
Laskar, J.IMCCE, Obs. de ParisUNSPECIFIED
Lovis, C.Observatoire de l Universite de Geneve, 51 chemin des Maillettes, 1290 Sauverny, SwitzerlandUNSPECIFIED
Magrin, D.INAF, Astronomical Institute, Padua, ItalyUNSPECIFIED
Malvasio, L.Center for Space and Habitability, Bern, SwitzerlandUNSPECIFIED
Marafatto, L.INAF – Osservatorio Astronomico di Padova, Vicolo dell’Osservatorio 5, 35122 Padova, ItalyUNSPECIFIED
Michaelis, HaraldHarald.Michaelis (at) dlr.deUNSPECIFIED
Munari, M.INAF - Osservatorio Astrofisico di Catania, Via S. Sofia 78, 95123 Catania, ItalyUNSPECIFIED
Nascimbeni, V.INAF – Osservatorio Astronomico di Padova, vicolo dell Osservatorio 5, 35122 Padova, ItalyUNSPECIFIED
Olofsson, G.Department of Astronomy, Stockholm University, SwedenUNSPECIFIED
Ottacher, HÖsterreichische Akademie der WissenschaftenUNSPECIFIED
Ottensamer, R.University of Vienna, Department of Astrophysics, AustriaUNSPECIFIED
Pagano, I.INAF – Osservatorio Astrofisico di Catania, Via S.Sofia 78, 95123 Catania, ItalyUNSPECIFIED
Palle, E.Instituto de Astrofisica de Canarias, C/ Via Lactea s/n, 38205, La Laguna, Tenerife, Spain; Departamento de Astrofisica, Universidad de La Laguna, 38206, Tenerife, SpainUNSPECIFIED
Peter, GisbertDLR Institute of Optical Sensor Systems, GermanyUNSPECIFIED
Piazza, D.physics institute, space research & planetary sciences, university of bern, sidlerstr. 5, ch-3012 bern, switzerlandUNSPECIFIED
Piotto, G.INAF – Osservatorio Astronomico di Padova, vicolo dell Osservatorio 5, 35122 Padova, ItalyUNSPECIFIED
Pollacco, D.Department of Physics, University of Warwick, Coventry CV4 7AL, UKUNSPECIFIED
Ratti, F.ESA/ESTEC, NiederlandeUNSPECIFIED
Rauer, Hheike.rauer (at) dlr.deUNSPECIFIED
Ragazzoni, R.INAF - Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, 35122 Padova, ItalyUNSPECIFIED
Rando, N.ESA/ESTEC, NiederlandeUNSPECIFIED
Ribas, I.Institut de Ciencies de l'Espai (ICE, CSIC), Campus UAB, Bellaterra, Spain; Institut d'Estudis Espacials de Catalunya (IEEC), Barcelona, SpainUNSPECIFIED
Rieder, M.Physikalisches Institut,University of Bern, Sidlerstraße 5, CH-3012 Bern, SwitzerlandUNSPECIFIED
Rohlfs, R.Observatoire de Genève, Université de Genève, SwitzerlandUNSPECIFIED
Safa, F.ESAUNSPECIFIED
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, PortugalUNSPECIFIED
Scandariato, G.INAF, Osservatorio Astrofisico di Catania, ItalyUNSPECIFIED
Segransan, D.Observatoire de Geneve, Universite de Geneve, SwitzerlandUNSPECIFIED
Simon, A. E.Physikalisches Institut, University of Bern, SwitzerlandUNSPECIFIED
Singh, V.INAF, Osservatorio Astrofisico di Catania, ItalyUNSPECIFIED
Smith, Alexis M SAlexis.Smith (at) dlr.dehttps://orcid.org/0000-0002-2386-4341
Sordet, M.Observatoire de Geneve, Universite de Geneve, SwitzerlandUNSPECIFIED
Sousa, S. G.Instituto de Astrofisica e Ciencias do Espaco, Universidade do Porto, CAUP, Rua das Estrelas, 4150-762 Porto, PortugalUNSPECIFIED
Steller, ManfredSpace Research Institute, AustriaUNSPECIFIED
Szabo, Gy. M.Department of Experimental Physics & Astronomical Observatory, Szedeg, HungaryUNSPECIFIED
Thomas, N.Physikalisches Institut Universität Bern, SwitzerlandUNSPECIFIED
Tschentscher, M.matthias.tschentscher (at) dlr.deUNSPECIFIED
Udry, S.Observatoire de Geneve, Universite de Geneve, SwitzerlandUNSPECIFIED
Viotto, V.INAF - Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, 35122 Padova, ItalyUNSPECIFIED
Walter, IngoDLR, Institut für Optische SensorsystemeUNSPECIFIED
Walton, NAInstitute of Astronomy, University of Cambridge, Cambridge, UKUNSPECIFIED
Wildi, F.University of Geneva, SwitzerlandUNSPECIFIED
Wolter, D.David.Wolter (at) dlr.deUNSPECIFIED
Date:2020
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:643
DOI :10.1051/0004-6361/202038677
Page Range:pp. 1-10
Publisher:EDP Sciences
ISSN:0004-6361
Status:Published
Keywords:planetary systems, abundance pattern, exoplanet occultation
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 - Project CHEOPS
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Optical Sensor Systems > Space Instruments
Institute of Planetary Research > Planetary Sensor Systems
Institute of Planetary Research > Extrasolar Planets and Atmospheres
Deposited By: Dombrowski, Ute
Deposited On:16 Oct 2020 10:09
Last Modified:17 Nov 2020 09:54

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Copyright © 2008-2017 German Aerospace Center (DLR). All rights reserved.