Open Access

Monthly Notices of the Royal Astronomical Society

, volume 514 , issue 1 , pages 77-104

Analysis of Early Science observations with the CHaracterising ExOPlanets Satellite (CHEOPS) using pycheops

P. Maxted ¹

D. Ehrenreich ²

Thomas G. Wilson ³

Y. Alibert ⁴

Andrew Collier Cameron ³

S. Hoyer ⁵

Sergio G. Sousa ⁶

G. Olofsson ⁷

A. Bekkelien ²

A. Deline ²

Laetitia Delrez ^{8, 9}

A. Bonfanti ¹⁰

Luca Borsato ¹¹

R. Alonso ^{12, 13}

Guillem Anglada-Escudé ^{14, 15}

D. Barrado ¹⁶

S. C. C. Barros ^{6, 17}

W. Baumjohann ¹⁰

M. Beck ²

T Beck ⁴

W. Benz ^{4, 18}

N. Billot ²

F. Biondi ^{11, 19}

X. Bonfils ²⁰

A. Brandeker ⁷

C. Broeg ^{4, 18}

T. Bárczy ²¹

J. Cabrera ²²

S. Charnoz ²³

C. Corral van Damme ²⁴

Szilárd Csizmadia ²²

M. B. Davies ²⁵

M. Deleuil ⁵

O. D. S. Demangeon ^{6, 17}

B.-O. Demory ¹⁸

A. Erikson ²²

H. G. Florén ⁷

A. FORTIER ^{4, 18}

L. Fossati ¹⁰

Malcolm Fridlund ^{26, 27}

D. Futyan ²

Davide Gandolfi ²⁸

M. Gillon ⁸

M. Guedel ²⁹

P. Guterman ^{5, 30}

K. Heng ^{18, 31}

K. G. Isaak ³²

L Kiss ³³

J. Laskar ³⁴

A. Lecavelier des Etangs ³⁵

Monika Lendl ²

C Lovis ²

D. Magrin ¹¹

V. Nascimbeni ¹¹

R. OTTENSAMER ³⁶

I. Pagano ³⁷

E. Palle ^{12, 13}

G. Peter ³⁸

G. Piotto ^{11, 39}

D. Pollacco ³¹

F. J. Pozuelos ^{8, 9}

D. Queloz ^{2, 40}

R. Ragazzoni ^{11, 39}

N. Rando ²⁴

H. Rauer ^{22, 41, 42}

C. Reimers ³⁶

I. Ribas ^{14, 15}

S. Salmon ²

N. C. Santos ^{6, 17}

G. Scandariato ³⁷

A. E. Simon ⁴

A. M. S. Smith ²²

M STELLER ¹⁰

Matthew I Swayne ¹

Gy. M. Szabó ^{43, 44}

D. Ségransan ²

N. Thomas ⁴

S. Udry ²

V. Van Grootel ⁹

N. A. Walton ⁴⁵

Hide authors affiliations Show authors affiliations: 45 affiliations

Astrophysics Group, Keele University , Staffordshire ST5 5BG, UK |

Department of Astronomy, University of Geneva , Chemin Pegasi 51, CH-1290 Versoix, Switzerland |

Centre for Exoplanet Science, SUPA School of Physics and Astronomy, University of St Andrews , North Haugh, St Andrews KY16 9SS, UK |

⁴

Physikalisches Institut, University of Bern , Gesellsschaftstrasse 6, CH-3012 Bern, Switzerland |

⁵

CNRS, CNES, LAM, Aix Marseille Univ , 13388 Marseille, France |

⁶

Instituto de Astrofísica e Ciências do Espaço, Universidade do Porto, CAUP, Rua das Estrelas , P-4150-762 Porto, Portugal

University of Porto

Instituto de Astrofísica e Ciências do Espaço

⁷

Department of Astronomy, Stockholm University, AlbaNova University Center , SE-10691 Stockholm, Sweden |

⁸

Astrobiology Research Unit, Université de Liège , Allée du 6 Août 19C, B-4000 Liège, Belgium |

⁹

Space sciences, Technologies and Astrophysics Research (STAR) Institute, Université de Liègey , Allée du 6 Août 19C, B-4000 Liège, Belgium |

¹⁰

Space Research Institute, Austrian Academy of Sciences , Schmiedlstrasse 6, A-8042 Graz, Austria |

¹¹

INAF, Osservatorio Astronomico di Padova , Vicolo dell’Osservatorio 5, I-35122 Padova, Italy

National Institute for Astrophysics

Astronomical Observatory of Padova

¹²

Instituto de Astrofísica de Canarias , E-38200 La Laguna, Tenerife, Spain |

¹³

Departamento de Astrofísica, Universidad de La Laguna , E-38206 La Laguna, Tenerife, Spain |

¹⁴

Institut de Ciències de l’Espai (ICE, CSIC), Campus UAB, Can Magrans s/n , E-08193 Bellaterra, Spain |

¹⁵

Institut d’Estudis Espacials de Catalunya (IEEC) , E-08034 Barcelona, Spain |

¹⁶

Depto. de Astrofísica, Centro de Astrobiologia (CSIC-INTA) , ESAC campus, E-28692 Villanueva de la Cãda, Madrid, Spain

Spanish Astrobiology Center

National Institute for Aerospace Technology

¹⁷

Departamento de Física e Astronomia, Faculdade de Ciências, Universidade do Porto , Rua do Campo Alegre, P-4169-007 Porto, Portugal |

¹⁸

Center for Space and Habitability , Gesellsschaftstrasse 6, CH-3012 Bern, Switzerland |

¹⁹

Max Planck Institute for Extraterrestrial Physics , Giessenbachstrasse 1, D-85748 Garching, Germany |

²⁰

CNRS, IPAG, Université Grenoble Alpes , F-38000 Grenoble, France |

²¹

Admatis , Miskok, Hungary |

²²

Institute of Planetary Research, German Aerospace Center (DLR) , Rutherfordstrasse 2, D-12489 Berlin, Germany |

²³

CNRS, Institut de physique du globe de Paris, Université de Paris , F-75005 Paris, France |

²⁴

ESTEC, European Space Agency , NL-2201AZ Noordwijk, the Netherlands |

²⁵

Lund Observatory, Department of Astronomy and Theoretical Physics, Lund University , Box 43, SE-22100 Lund, Sweden |

²⁶

Leiden Observatory, University of Leiden , PO Box 9513, NL-2300 RA Leiden, the Netherlands |

²⁷

Department of Space, Earth and Environment, Chalmers University of Technology , Onsala Space Observatory, SE-43992 Onsala, Sweden |

²⁸

Dipartimento di Fisica, Università degli Studi di Torino , via Pietro Giuria 1, I-10125, Torino, Italy |

²⁹

Department of Astrophysics, University of Vienna , Türkenschanzstrasse 17, A-1180 Vienna, Austria |

³⁰

Division Technique INSU , BP 330, F- 83507 La Seyne cedex, France |

³¹

Department of Physics, University of Warwick , Gibbet Hill Road, Coventry CV4 7AL, UK |

³²

Science and Operations Department - Science Division (SCI-SC), Directorate of Science, European Space Agency (ESA), European Space Research and Technology Centre (ESTEC) , Keplerlaan 1, NL-2201-AZ Noordwijk, the Netherlands |

³³

Konkoly Observatory, Research Centre for Astronomy and Earth Sciences , 1121 Budapest, Konkoly Thege Miklós út 15-17, Hungary

Research Centre for Astronomy and Earth Sciences

Konkoly Observatory

³⁴

IMCCE, UMR8028 CNRS, Observatoire de Paris, PSL Univ., Sorbonne Univ. , 77 av. Denfert-Rochereau, F-75014 Paris, France

Sorbonne University

Observatoire de Paris

Paris Sciences et Lettres

³⁵

Institut d’astrophysique de Paris, UMR7095 CNRS, Université Pierre & Marie Curie , 98bis blvd. Arago, F-75014 Paris, France

Sorbonne University

Paris Institute of Astrophysics

³⁶

Department of Astrophysics, University of Vienna , Tuerkenschanzstrasse 17, A-1180 Vienna, Austria |

³⁷

INAF, Osservatorio Astrofisico di Catania , Via S. Sofia 78, I-95123 Catania, Italy

National Institute for Astrophysics

Catania Astrophysical Observatory

³⁸

Institute of Optical Sensor Systems, German Aerospace Center (DLR) , Rutherfordstrasse 2, D-12489 Berlin, Germany |

³⁹

Dipartimento di Fisica e Astronomia ‘Galileo Galilei’, Università degli Studi di Padova , Vicolo dell’Osservatorio 3, I-35122 Padova, Italy |

⁴⁰

Cavendish Laboratory , JJ Thomson Avenue, Cambridge CB3 0HE, UK |

⁴¹

Center for Astronomy and Astrophysics, Technical University Berlin , Hardenberstrasse 36, D-10623 Berlin, Germany |

⁴²

Institut für Geologische Wissenschaften, Freie Universität Berlin , D-12249 Berlin, Germany |

⁴³

ELTE E’otv’os Loránd University, Gothard Astrophysical Observatory , Szent Imre h. u. 112, 9700 Szombathely, Hungary |

⁴⁴

MTA-ELTE Exoplanet Research Group , Szent Imre h. u. 112, 9700 Szombathely, Hungary |

⁴⁵

Institute of Astronomy, University of Cambridge , Madingley Road, Cambridge CB3 0HA, UK |

Publication type: Journal Article

Publication date: 2021-11-25

Oxford University Press

Monthly Notices of the Royal Astronomical Society

scimago Q1

wos Q1

SJR: 1.702

CiteScore: 9.7

Impact factor: 4.8

ISSN: 00358711, 13652966, 13658711

DOI: 10.1093/mnras/stab3371

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Space and Planetary Science

Astronomy and Astrophysics

Abstract

ABSTRACT

CHEOPS (CHaracterising ExOPlanet Satellite) is an ESA S-class mission that observes bright stars at high cadence from low-Earth orbit. The main aim of the mission is to characterize exoplanets that transit nearby stars using ultrahigh precision photometry. Here, we report the analysis of transits observed by CHEOPS during its Early Science observing programme for four well-known exoplanets: GJ 436 b, HD 106315 b, HD 97658 b, and GJ 1132 b. The analysis is done using pycheops, an open-source software package we have developed to easily and efficiently analyse CHEOPS light-curve data using state-of-the-art techniques that are fully described herein. We show that the precision of the transit parameters measured using CHEOPS is comparable to that from larger space telescopes such as Spitzer Space Telescope and Kepler. We use the updated planet parameters from our analysis to derive new constraints on the internal structure of these four exoplanets.

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Maxted P. et al. Analysis of Early Science observations with the CHaracterising ExOPlanets Satellite (CHEOPS) using pycheops // Monthly Notices of the Royal Astronomical Society. 2021. Vol. 514. No. 1. pp. 77-104.

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@article{2021_Maxted,

author = {P. Maxted and D. Ehrenreich and Thomas G. Wilson and Y. Alibert and Andrew Collier Cameron and S. Hoyer and Sergio G. Sousa and G. Olofsson and A. Bekkelien and A. Deline and Laetitia Delrez and A. Bonfanti and Luca Borsato and R. Alonso and Guillem Anglada-Escudé and D. Barrado and S. C. C. Barros and W. Baumjohann and M. Beck and T Beck and W. Benz and N. Billot and F. Biondi and X. Bonfils and A. Brandeker and C. Broeg and T. Bárczy and J. Cabrera and S. Charnoz and C. Corral van Damme and Szilárd Csizmadia and M. B. Davies and M. Deleuil and O. D. S. Demangeon and B.-O. Demory and A. Erikson and H. G. Florén and A. FORTIER and L. Fossati and Malcolm Fridlund and D. Futyan and Davide Gandolfi and M. Gillon and M. Guedel and P. Guterman and K. Heng and K. G. Isaak and L Kiss and J. Laskar and A. Lecavelier des Etangs and others},

title = {Analysis of Early Science observations with the CHaracterising ExOPlanets Satellite (CHEOPS) using pycheops},

journal = {Monthly Notices of the Royal Astronomical Society},

year = {2021},

volume = {514},

publisher = {Oxford University Press},

month = {nov},

url = {https://doi.org/10.1093/mnras/stab3371},

number = {1},

pages = {77--104},

doi = {10.1093/mnras/stab3371}

}

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MLA Copy

Maxted, P., et al. “Analysis of Early Science observations with the CHaracterising ExOPlanets Satellite (CHEOPS) using pycheops.” Monthly Notices of the Royal Astronomical Society, vol. 514, no. 1, Nov. 2021, pp. 77-104. https://doi.org/10.1093/mnras/stab3371.

Publisher

Oxford University Press

Journal

Monthly Notices of the Royal Astronomical Society

scimago Q1

wos Q1

SJR

1.702

CiteScore

9.7

Impact factor

4.8

ISSN

00358711 (Print)

13652966 (Electronic)

13658711 (Electronic)