Experimental Astronomy

, volume 51 , issue 1 , pages 109-151

The CHEOPS mission

W. Benz ^{1, 2}

C. Broeg ²

A. FORTIER ²

N. Rando ³

T Beck ²

M. Beck ⁴

D. Queloz ^{4, 5}

D. Ehrenreich ⁴

P. F. L. Maxted ⁶

K. G. Isaak ³

N. Billot ⁴

Y. Alibert ¹

R Alonso ^{7, 8}

C António ⁹

J. Asquier ³

T. Bandy ¹

T. Bárczy ¹⁰

D. Barrado ¹¹

S. C. C. Barros ^{12, 13}

W. Baumjohann ¹⁴

A. Bekkelien ⁴

M. Bergomi ¹⁵

F. Biondi ¹⁵

X. Bonfils ¹⁶

L. Borsato ¹⁵

A. Brandeker ¹⁷

M.-D. Busch ¹

J. Cabrera ¹⁸

V. Cessa ²

S. Charnoz ¹⁹

B. Chazelas ⁴

A. Collier-Cameron ²⁰

C. Corral van Damme ³

D Cortes ²¹

M. B. Davies ²²

M. Deleuil ²³

A. Deline ⁴

L. Delrez ^{24, 25}

O. Demangeon ^{12, 13, 23}

B.-O. Demory ²

A. Erikson ¹⁸

J. Farinato ¹⁵

L. Fossati ¹⁴

M. Fridlund ^{26, 27}

D. Futyan ⁴

D. Gandolfi ²⁸

A. García Muñoz ²⁹

M. Gillon ²⁵

P. Guterman ^{23, 30}

A. Gutiérrez ⁹

J. Hasiba ¹⁴

K. Heng ²

E. HERNÁNDEZ ²

S. Hoyer ²³

L. L. Kiss ^{31, 32}

Z. Kovacs ¹⁰

T Kuntzer ⁴

J. Laskar ³³

A. Lecavelier des Etangs ³⁴

M. Lendl ^{4, 14}

A. Lopez ²¹

I Lora ³⁵

C Lovis ⁴

T. Lüftinger ³⁶

D. Magrin ¹⁵

L. Malvasio ²

L. Marafatto ¹⁵

H. MICHAELIS ¹⁸

D De Miguel ²¹

D Modrego ³⁵

M. Munari ³⁷

V. Nascimbeni ³⁸

G. Olofsson ¹⁷

H. Ottacher ¹⁴

R. OTTENSAMER ³⁶

I. Pagano ³⁷

R Palacios ²¹

E. Pallé ^{7, 8}

G. Peter ³⁹

D. Piazza ¹

G. Piotto ^{15, 38}

A Pizarro ²¹

D. Pollaco ⁴⁰

R. Ragazzoni ¹⁵

F. Ratti ³

H. Rauer ^{18, 29, 41}

I. Ribas ^{42, 43}

M. Rieder ¹

R. Rohlfs ²

F Safa ³

M. Salatti ⁴⁴

N. C. Santos ^{12, 13}

G. Scandariato ³⁷

D. Segransan ⁴

A. E. Simon ²

A. M. S. Smith ¹⁸

M. Sordet ⁴

S. G. Sousa ^{12, 13}

M STELLER ¹⁴

G. M. Szabó ^{31, 45, 46}

J. Szöke ¹⁰

N. Thomas ¹

M. Tschentscher ¹⁸

S. Udry ⁴

V. Van Grootel ²⁴

V. Viotto ¹⁵

I. Walter ³⁹

N. A. Walton ⁵

F. Wildi ⁴

D Wolter ¹⁸

Hide authors affiliations Show authors affiliations: 46 affiliations

Physikalisches Institut, University of Bern, Bern, Switzerland |

Center for Space and Habitability, University of Bern, Bern, Switzerland |

ESTEC, European Space Agency, Noordwijk, Netherlands |

⁴

Observatoire de Genève, University of Geneva, Geneva, Switzerland |

⁵

Institute of Astronomy, University of Cambridge, Cambridge, UK |

⁶

Astrophysics Group, Keele University, Staffordshire, UK |

⁷

Instituto de Astrofísica de Canarias, Tenerife, SPAIN |

⁸

Dpto. de Astrofísica, Universidad de La Laguna, Tenerife, Spain |

⁹

DEIMOS Engenharia, Lisbon, Portugal |

¹⁰

Admatis, Miskolc, Hungary |

¹¹

Unidad de Excelencia María de Maeztu - Centro de Astrobiología (INTA-CSIC), Madrid, Spain

Spanish Astrobiology Center

National Institute for Aerospace Technology

¹²

Instituto de Astrofísica e Ciências do Espaço, Universidade do Porto, CAUP, Porto, Portugal

University of Porto

Instituto de Astrofísica e Ciências do Espaço

¹³

Departamento de Física e Astronomia, Faculdade de Ciências, Universidade do Porto, Porto, Portugal |

¹⁴

Space Research Institute, Austrian Academy of Sciences, Graz, Austria |

¹⁵

INAF Astronomical Observatory of Padova, Padova, Italy

National Institute for Astrophysics

Astronomical Observatory of Padova

¹⁶

Institut de Planétologie et d’Astrophysique, University of Grenoble, Grenoble, France |

¹⁷

Stockholm University, Stockholm, SWEDEN |

¹⁸

Institute of Planetary Research, German Aerospace Center (DLR), Berlin, Germany |

¹⁹

Institut de Physique du Globe, Paris, France |

²⁰

University of St. Andrews, St. Andrews, UK |

²¹

AIRBUS Defence, Space Earth Observation, Navigation, Science, Madrid, Spain |

²²

Lund Observatory, Lund University, Lund, Sweden |

²³

Aix Marseille Univ, CNRS, CNES, LAM, Marseille, France |

²⁴

Space Sciences, Technologies and Astrophysics Research Institute, Université de Liège, Liège, Belgium |

²⁵

Astrobiology Research Unit, Université de Liège, Liège, Belgium |

²⁶

University of Leiden, Leiden, the Netherlands |

²⁷

Chalmers University, Göteborg, Sweden |

²⁸

Universita degli Studi di Torino, University of Torino, Torino, Italy |

²⁹

Zentrum für Astronomie und Astrophysik, Technische Universität Berlin, Berlin, Germany |

³⁰

Division Technique INSU, La Seyne sur Mer, France |

³¹

Konkoly Observatory, Research Centre for Astronomy and Earth Sciences, Budapest, Hungary

Research Centre for Astronomy and Earth Sciences

Konkoly Observatory

³²

ELTE Eötvös Loránd University, Institute of Physics, Budapest, Hungary |

³³

IMCCE, CNRS, Observatoire de Paris, PSL University, Sorbonne Université, Paris, France

Sorbonne University

Observatoire de Paris

Paris Sciences et Lettres

³⁴

Institut d’astrophysique de Paris, Paris, France |

³⁵

INTA, Instituto Nacional de Técnica Aeroespacial, Torrejòn de Ardoz, Spain |

³⁶

Department of Astrophysics, University of Vienna, Vienna, Austria |

³⁷

INAF Astrophysical Observatory of Catania, Catania, Italy |

³⁸

Department of Physics and Astronomy, University of Padova, Padova, Italy |

³⁹

Institute of Optical Sensor Systems, German Aerospace Center (DLR), Berlin, Germany |

⁴⁰

Department of Physics, University of Warwick, Coventry, UK |

⁴¹

Institute of Geological Sciences, FU Berlin, Berlin, Germany |

⁴²

Institut de Ciènces de l’Espai (ICE, CSIC), Campus UAB, Bellaterra, Spain

Autonomous University of Barcelona

Institute of Space Sciences

⁴³

Institut d’Estudis Espacials de Catalunya (IEEC), Barcelona, Spain |

⁴⁴

Italian Space Agency, Rome, Italy |

⁴⁵

Gothard Astrophysical Observatory, ELTE Eötvös Loránd University, Szombathely, Hungary |

⁴⁶

MTA-ELTE Exoplanet Research Group, Szombathely, Hungary |

Publication type: Journal Article

Publication date: 2020-11-05

Springer Nature

Experimental Astronomy

scimago Q2

wos Q2

SJR: 0.951

CiteScore: 7.4

Impact factor: 2.2

ISSN: 09226435, 15729508

DOI: 10.1007/s10686-020-09679-4

Copy DOI

Space and Planetary Science

Astronomy and Astrophysics

Abstract

The CHaracterising ExOPlanet Satellite (CHEOPS) was selected on October 19, 2012, as the first small mission (S-mission) in the ESA Science Programme and successfully launched on December 18, 2019, as a secondary passenger on a Soyuz-Fregat rocket from Kourou, French Guiana. CHEOPS is a partnership between ESA and Switzerland with important contributions by ten additional ESA Member States. CHEOPS is the first mission dedicated to search for transits of exoplanets using ultrahigh precision photometry on bright stars already known to host planets. As a follow-up mission, CHEOPS is mainly dedicated to improving, whenever possible, existing radii measurements or provide first accurate measurements for a subset of those planets for which the mass has already been estimated from ground-based spectroscopic surveys. The expected photometric precision will also allow CHEOPS to go beyond measuring only transits and to follow phase curves or to search for exo-moons, for example. Finally, by unveiling transiting exoplanets with high potential for in-depth characterisation, CHEOPS will also provide prime targets for future instruments suited to the spectroscopic characterisation of exoplanetary atmospheres. To reach its science objectives, requirements on the photometric precision and stability have been derived for stars with magnitudes ranging from 6 to 12 in the V band. In particular, CHEOPS shall be able to detect Earth-size planets transiting G5 dwarf stars (stellar radius of 0.9R⊙) in the magnitude range 6 ≤ V ≤ 9 by achieving a photometric precision of 20 ppm in 6 hours of integration time. In the case of K-type stars (stellar radius of 0.7R⊙) of magnitude in the range 9 ≤ V ≤ 12, CHEOPS shall be able to detect transiting Neptune-size planets achieving a photometric precision of 85 ppm in 3 hours of integration time. This precision has to be maintained over continuous periods of observation for up to 48 hours. This precision and stability will be achieved by using a single, frame-transfer, back-illuminated CCD detector at the focal plane assembly of a 33.5 cm diameter, on-axis Ritchey-Chrétien telescope. The nearly 275 kg spacecraft is nadir-locked, with a pointing accuracy of about 1 arcsec rms, and will allow for at least 1 Gbit/day downlink. The sun-synchronous dusk-dawn orbit at 700 km altitude enables having the Sun permanently on the backside of the spacecraft thus minimising Earth stray light. A mission duration of 3.5 years in orbit is foreseen to enable the execution of the science programme. During this period, 20% of the observing time is available to the wider community through yearly ESA call for proposals, as well as through discretionary time approved by ESA’s Director of Science. At the time of this writing, CHEOPS commissioning has been completed and CHEOPS has been shown to fulfill all its requirements. The mission has now started the execution of its science programme.

Found

6 citations

García Antonio

56 publications, 1 557 citations, 1 review

h-index: 18

Paris Cité University

Université Paris-Saclay

1 citation

Schneider Jean

14 publications, 47 citations

h-index: 4

Observatoire de Paris

Research interests

Exoplanets

Philosophy

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Benz W. et al. The CHEOPS mission // Experimental Astronomy. 2020. Vol. 51. No. 1. pp. 109-151.

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Benz W. et al. The CHEOPS mission // Experimental Astronomy. 2020. Vol. 51. No. 1. pp. 109-151.

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@article{2020_Benz,

author = {W. Benz and C. Broeg and A. FORTIER and N. Rando and T Beck and M. Beck and D. Queloz and D. Ehrenreich and P. F. L. Maxted and K. G. Isaak and N. Billot and Y. Alibert and R Alonso and C António and J. Asquier and T. Bandy and T. Bárczy and D. Barrado and S. C. C. Barros and W. Baumjohann and A. Bekkelien and M. Bergomi and F. Biondi and X. Bonfils and L. Borsato and A. Brandeker and M.-D. Busch and J. Cabrera and V. Cessa and S. Charnoz and B. Chazelas and A. Collier-Cameron and C. Corral van Damme and D Cortes and M. B. Davies and M. Deleuil and A. Deline and L. Delrez and O. Demangeon and B.-O. Demory and A. Erikson and J. Farinato and L. Fossati and M. Fridlund and D. Futyan and D. Gandolfi and A. García Muñoz and M. Gillon and P. Guterman and A. Gutiérrez and others},

title = {The CHEOPS mission},

journal = {Experimental Astronomy},

year = {2020},

volume = {51},

publisher = {Springer Nature},

month = {nov},

url = {https://doi.org/10.1007/s10686-020-09679-4},

number = {1},

pages = {109--151},

doi = {10.1007/s10686-020-09679-4}

}

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Benz, W., et al. “The CHEOPS mission.” Experimental Astronomy, vol. 51, no. 1, Nov. 2020, pp. 109-151. https://doi.org/10.1007/s10686-020-09679-4.

Publisher

Springer Nature

Journal

Experimental Astronomy

scimago Q2

wos Q2

SJR

0.951

CiteScore

7.4

Impact factor

2.2

ISSN

09226435 (Print)

15729508 (Electronic)

Profiles

Antonio Muñoz García