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  • Lendl, M.Université de Genève,University of Geneva (author)

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

  • Article/chapterEnglish2020

Publisher, publication year, extent ...

  • 2020-11-09
  • EDP Sciences,2020
  • electronicrdacarrier

Numbers

  • LIBRIS-ID:oai:research.chalmers.se:82f7a477-11b0-4680-b37e-b04f53369ce7
  • https://research.chalmers.se/publication/520454URI
  • https://doi.org/10.1051/0004-6361/202038677DOI
  • https://lup.lub.lu.se/record/225e71fd-aea4-4d1a-8774-592b7c08980eURI
  • https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-188743URI

Supplementary language notes

  • Language:English
  • Summary in:English

Part of subdatabase

Classification

  • Subject category:art swepub-publicationtype
  • Subject category:ref swepub-contenttype

Notes

  • 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 = 86.4-4.4+2.9°, 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°. Finally, we provide reference values for the photometric precision attained by the CHEOPS satellite: for the V = 6.6 mag star, and using a 1-h 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.

Subject headings and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • Csizmadia, SzilardDeutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR) (author)
  • Deline, A.Université de Genève,University of Geneva (author)
  • Fossati, L. (author)
  • Kitzmann, D.Universität Bern,University of Bern (author)
  • Heng, KevinUniversität Bern,University of Bern (author)
  • Hoyer, S.Laboratoire d'Astrophysique de Marseille (author)
  • Salmon, S.Université de Genève,University of Geneva (author)
  • Benz, W.Universität Bern,University of Bern (author)
  • Broeg, C.Universität Bern,University of Bern (author)
  • Ehrenreich, D.Université de Genève,University of Geneva (author)
  • Fortier, A.Universität Bern,University of Bern (author)
  • Queloz, D.Université de Genève,University of Geneva (author)
  • Bonfanti, A. (author)
  • Brandeker, AlexisStockholms universitet,Institutionen för astronomi(Swepub:su)alexis (author)
  • Collier Cameron, A.University of St Andrews (author)
  • Delrez, L.Université de Genève,University of Geneva (author)
  • Garcia Munoz, A.Technische Universität Berlin (author)
  • Hooton, M.J.Universität Bern,University of Bern (author)
  • Maxted, P.Keele University (author)
  • Morris, Brett M.Universität Bern,University of Bern (author)
  • Van Grootel, V.Universite de Liège,University of Liège (author)
  • Wilson, T.G.University of St Andrews (author)
  • Alibert, Y.Universität Bern,University of Bern (author)
  • Alonso, R.Instituto de Astrofísica de Canarias (author)
  • Asquier, J.European Space Research and Technology Centre (ESA ESTEC) (author)
  • Bandy, T.Universität Bern,University of Bern (author)
  • Bárczy, T. (author)
  • Davies, Melvyn BLund University,Lunds universitet,Astronomi - Genomgår omorganisation,Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation,Naturvetenskapliga fakulteten,Lund Observatory - Undergoing reorganization,Department of Astronomy and Theoretical Physics - Undergoing reorganization,Faculty of Science(Swepub:lu)astr-mda (author)
  • Barros, S.C.C.Universidade do Porto,University of Porto (author)
  • Baumjohann, W. (author)
  • Beck, M.Université de Genève,University of Geneva (author)
  • Beck, T.Universität Bern,University of Bern (author)
  • Bekkelien, A.Université de Genève,University of Geneva (author)
  • Bergomi, M.Istituto nazionale di astrofisica (INAF) (author)
  • Billot, N.Université de Genève,University of Geneva (author)
  • Biondi, F.Istituto nazionale di astrofisica (INAF) (author)
  • Bonfils, X.Université Grenoble Alpes,Grenoble Alpes University (author)
  • Bourrier, V.Université de Genève,University of Geneva (author)
  • Busch, M.-D.Universität Bern,University of Bern (author)
  • Cabrera, J.Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR) (author)
  • Cessa, V.Universität Bern,University of Bern (author)
  • Charnoz, S.Institut de Physique du Globe de Paris (author)
  • Chazelas, B.Université de Genève,University of Geneva (author)
  • Corral Van Damme, C.European Space Research and Technology Centre (ESA ESTEC) (author)
  • Davies, Melvyn B.Lunds universitet,Lund University (author)
  • Deleuil, M.Laboratoire d'Astrophysique de Marseille (author)
  • Demangeon, O.Laboratoire d'Astrophysique de Marseille (author)
  • Demory, B.O.Universität Bern,University of Bern (author)
  • Erikson, AndersDeutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR) (author)
  • Farinato, J.Istituto nazionale di astrofisica (INAF) (author)
  • Fridlund, Malcolm,1952Universiteit Leiden (UL),Leiden University (UL),Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)malfri (author)
  • Futyan, D.Université de Genève,University of Geneva (author)
  • Gandolfi, D.Istituto nazionale di astrofisica (INAF) (author)
  • Gillon, MichaëlUniversite de Liège,University of Liège (author)
  • Guterman, P.Laboratoire d'Astrophysique de Marseille (author)
  • Hasiba, J. (author)
  • Hernandez, E.Universität Bern,University of Bern (author)
  • Isaak, K.European Space Research and Technology Centre (ESA ESTEC) (author)
  • Kiss, L.L.Magyar Tudomanyos Akademia,Hungarian Academy of Sciences (author)
  • Kuntzer, T.Université de Genève,University of Geneva (author)
  • des Etangs, A. L.Institut d 'Astrophysique de Paris (author)
  • Lüftinger, T.Universität Wien,University of Vienna (author)
  • Laskar, J.Observatoire de Paris,Paris Observatory (author)
  • Lovis, C.Université de Genève,University of Geneva (author)
  • Magrin, D.Istituto nazionale di astrofisica (INAF) (author)
  • Malvasio, L.Universität Bern,University of Bern (author)
  • Marafatto, L.Istituto nazionale di astrofisica (INAF) (author)
  • Michaelis, H.Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR) (author)
  • Munari, M.Istituto nazionale di astrofisica (INAF) (author)
  • Nascimbeni, ValerioIstituto nazionale di astrofisica (INAF) (author)
  • Olofsson, GöranStockholms universitet,Institutionen för astronomi(Swepub:su)olofsson (author)
  • Ottacher, H. (author)
  • Ottensamer, R.Universität Wien,University of Vienna (author)
  • Pagano, I.Istituto nazionale di astrofisica (INAF) (author)
  • Palle, E.Instituto de Astrofísica de Canarias (author)
  • Peter, G.Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR) (author)
  • Piazza, D.Universität Bern,University of Bern (author)
  • Piotto, Giampaolo P.Istituto nazionale di astrofisica (INAF) (author)
  • Pollacco, Don L.The University of Warwick (author)
  • Ratti, F.European Space Research and Technology Centre (ESA ESTEC) (author)
  • Rauer, H.Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR) (author)
  • Ragazzoni, RobertoIstituto nazionale di astrofisica (INAF) (author)
  • Rando, N.European Space Research and Technology Centre (ESA ESTEC) (author)
  • Ribas, I.Institut de Ciències de l'Espai (ICE) - CSIC,Institute of Space Sciences (ICE) - CSIC (author)
  • Rieder, M.Universität Bern,University of Bern (author)
  • Rohlfs, R.Université de Genève,University of Geneva (author)
  • Safa, F.European Space Research and Technology Centre (ESA ESTEC) (author)
  • Santos, N. C.Universidade do Porto,University of Porto (author)
  • Scandariato, GaetanoIstituto nazionale di astrofisica (INAF) (author)
  • Segransan, D.Université de Genève,University of Geneva (author)
  • Simon, A.E.Universität Bern,University of Bern (author)
  • Singh, V.Istituto nazionale di astrofisica (INAF) (author)
  • Smith, Alexis M. S.Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR) (author)
  • Sordet, M.Université de Genève,University of Geneva (author)
  • Sousa, S.G.Universidade do Porto,University of Porto (author)
  • Steller, Manfred B. (author)
  • Szabó, G.M.Eötvös Loránd University (ELTE) (author)
  • Thomas, NicolasUniversität Bern,University of Bern (author)
  • Tschentscher, M.Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR) (author)
  • Udry, S.Université de Genève,University of Geneva (author)
  • Viotto, V.Istituto nazionale di astrofisica (INAF) (author)
  • Walter, I.Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR) (author)
  • Walton, N. A.University Of Cambridge (author)
  • Wildi, F.Université de Genève,University of Geneva (author)
  • Wolter, D.Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR),German Aerospace Center (DLR) (author)
  • Université de GenèveUniversity of Geneva (creator_code:org_t)

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  • In:Astronomy and Astrophysics: EDP Sciences6430004-63611432-0746

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Lendl, M.
Csizmadia, Szila ...
Deline, A.
Fossati, L.
Kitzmann, D.
Heng, Kevin
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Hoyer, S.
Salmon, S.
Benz, W.
Broeg, C.
Ehrenreich, D.
Fortier, A.
Queloz, D.
Bonfanti, A.
Brandeker, Alexi ...
Collier Cameron, ...
Delrez, L.
Garcia Munoz, A.
Hooton, M.J.
Maxted, P.
Morris, Brett M.
Van Grootel, V.
Wilson, T.G.
Alibert, Y.
Alonso, R.
Asquier, J.
Bandy, T.
Bárczy, T.
Davies, Melvyn B
Barros, S.C.C.
Baumjohann, W.
Beck, M.
Beck, T.
Bekkelien, A.
Bergomi, M.
Billot, N.
Biondi, F.
Bonfils, X.
Bourrier, V.
Busch, M.-D.
Cabrera, J.
Cessa, V.
Charnoz, S.
Chazelas, B.
Corral Van Damme ...
Davies, Melvyn B ...
Deleuil, M.
Demangeon, O.
Demory, B.O.
Erikson, Anders
Farinato, J.
Fridlund, Malcol ...
Futyan, D.
Gandolfi, D.
Gillon, Michaël
Guterman, P.
Hasiba, J.
Hernandez, E.
Isaak, K.
Kiss, L.L.
Kuntzer, T.
des Etangs, A. L ...
Lüftinger, T.
Laskar, J.
Lovis, C.
Magrin, D.
Malvasio, L.
Marafatto, L.
Michaelis, H.
Munari, M.
Nascimbeni, Vale ...
Olofsson, Göran
Ottacher, H.
Ottensamer, R.
Pagano, I.
Palle, E.
Peter, G.
Piazza, D.
Piotto, Giampaol ...
Pollacco, Don L.
Ratti, F.
Rauer, H.
Ragazzoni, Rober ...
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Ribas, I.
Rieder, M.
Rohlfs, R.
Safa, F.
Santos, N. C.
Scandariato, Gae ...
Segransan, D.
Simon, A.E.
Singh, V.
Smith, Alexis M. ...
Sordet, M.
Sousa, S.G.
Steller, Manfred ...
Szabó, G.M.
Thomas, Nicolas
Tschentscher, M.
Udry, S.
Viotto, V.
Walter, I.
Walton, N. A.
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