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CHEOPS: A transit photometry mission for ESA's small mission programme
Broeg, C.; Fortier, A.; Ehrenreich, D. et al.
2013In Saglia, Roberto (Ed.) European Physical Journal Web of Conferences
 

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Abstract :
[en] Ground based radial velocity (RV) searches continue to discover exoplanets below Neptune mass down to Earth mass. Furthermore, ground based transit searches now reach milli-mag photometric precision and can discover Neptune size planets around bright stars. These searches will find exoplanets around bright stars anywhere on the sky, their discoveries representing prime science targets for further study due to the proximity and brightness of their host stars. A mission for transit follow-up measurements of these prime targets is currently lacking. The first ESA S-class mission CHEOPS (CHaracterizing ExoPlanet Satellite) will fill this gap. It will perform ultra-high precision photometric monitoring of selected bright target stars almost anywhere on the sky with sufficient precision to detect Earth sized transits. It will be able to detect transits of RV-planets by photometric monitoring if the geometric configuration results in a transit. For Hot Neptunes discovered from the ground, CHEOPS will be able to improve the transit light curve so that the radius can be determined precisely. Because of the host stars' brightness, high precision RV measurements will be possible for all targets. All planets observed in transit by CHEOPS will be validated and their masses will be known. This will provide valuable data for constraining the mass-radius relation of exoplanets, especially in the Neptune-mass regime. During the planned 3.5 year mission, about 500 targets will be observed. There will be 20% of open time available for the community to develop new science programmes.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Broeg, C.;  Center for Space and Habitability, University of Bern ; Space Research and Planetary Science Division, Physikalisches Institut, Universität Bern, Sidlerstrasse 5, 3012, Bern, Switzerland
Fortier, A.;  Center for Space and Habitability, University of Bern ; Space Research and Planetary Science Division, Physikalisches Institut, Universität Bern, Sidlerstrasse 5, 3012, Bern, Switzerland
Ehrenreich, D.;  Observatory of the University of Geneva
Alibert, Y.;  Center for Space and Habitability, University of Bern ; Space Research and Planetary Science Division, Physikalisches Institut, Universität Bern, Sidlerstrasse 5, 3012, Bern, Switzerland
Baumjohann, W.;  Space Research Institute, Austrian Academy of Sciences, Graz, Austria
Benz, W.;  Center for Space and Habitability, University of Bern ; Space Research and Planetary Science Division, Physikalisches Institut, Universität Bern, Sidlerstrasse 5, 3012, Bern, Switzerland
Deleuil, M.;  Aix Marseille Université, CNRS, LAM (Laboratoire d'Astrophysique de Marseille) UMR 7326, 13388, Marseille, France
Gillon, Michaël  ;  Université de Liège - ULiège
Ivanov, A.;  Swiss Space Center, école Polytechnique Fédéral de Lausanne, Lausanne, Switzerland
Liseau, R.;  Department of Earth and Space Sciences, Chalmers University of Technology, Onsala Space Observatory, 439 92, Onsala, Sweden
Meyer, M.;  Institute of Astronomy ETH Zürich
Oloffson, G.;  Department of Astronomy, Stockholm University, 106 91, Stockholm, Sweden
Pagano, I.;  INAF Osservatorio Astrofisico di Catania, via S. Sofia 78, 95123, Catania, Italy
Piotto, G.;  Dipartimento di Fisica e Astronomia "Galileo Galilei", Universita` di Padova, v.co dell'Osservatorio 3, 35122, Padova, Italy
Pollacco, D.;  Astrophysics Research Centre, School of Mathematics & Physics, Queen's University, University Road, Belfast, BT7 1NN, UK
Queloz, D.;  Observatory of the University of Geneva
Ragazzoni, R.;  Osservatorio Astronomico di Padova, INAF, vicolo dell'Osservatorio 5, 35122, Padova, Italy
Renotte, Etienne ;  Université de Liège - ULiège > CSL (Centre Spatial de Liège)
Steller, M.;  Space Research Institute, Austrian Academy of Sciences, Graz, Austria
Thomas, N.;  Space Research and Planetary Science Division, Physikalisches Institut, Universität Bern, Sidlerstrasse 5, 3012, Bern, Switzerland)
More authors (10 more) Less
Language :
English
Title :
CHEOPS: A transit photometry mission for ESA's small mission programme
Publication date :
01 April 2013
Event name :
Hot Planets and Cool Stars
Event place :
Garching, Germany
Event date :
12-16 November 2012
By request :
Yes
Audience :
International
Main work title :
European Physical Journal Web of Conferences
Editor :
Saglia, Roberto
Publisher :
EDP Sciences
Collection name :
47
Pages :
03005
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