Analysis of early science observations with the CHaracterising ExOPlanets Satellite (CHEOPS) using pycheops

P F L Maxted; D Ehrenreich; T G Wilson; Y Alibert; A Collier Cameron; S Hoyer; S G Sousa; G Olofsson; A Bekkelien; A Deline; L Delrez; A Bonfanti; L Borsato; R Alonso; G Anglada Escudé; D Barrado; S C C Barros; W Baumjohann; M Beck; T Beck; W Benz; N Billot; F Biondi; X Bonfils; A Brandeker; C Broeg; T Bárczy; J Cabrera; S Charnoz; C Corral Van Damme; Sz Csizmadia; M B Davies; M Deleuil; O D S Demangeon; B-O Demory; A Erikson; H G Florén; A Fortier; L Fossati; M Fridlund; D Futyan; D Gandolfi; M Gillon; M Guedel; P Guterman; K Heng; K G Isaak; L Kiss; J Laskar; A Lecavelier des Etangs; M Lendl; C Lovis; D Magrin; V Nascimbeni; R Ottensamer; I Pagano; E Pallé; G Peter; G Piotto; D Pollacco; F J Pozuelos; D Queloz; R Ragazzoni; N Rando; H Rauer; C Reimers; I Ribas; S Salmon; N C Santos; G Scandariato; A E Simon; A M S Smith; M Steller; M I Swayne; Gy M Szabó; D Ségransan; N Thomas; S Udry; V Van Grootel; N A Walton

doi:10.1093/mnras/stab3371

Analysis of early science observations with the CHaracterising ExOPlanets Satellite (CHEOPS) using pycheops

P F L Maxted^*, D Ehrenreich, T G Wilson, Y Alibert, A Collier Cameron, S Hoyer, S G Sousa, G Olofsson, A Bekkelien, A Deline, L Delrez, A Bonfanti, L Borsato, R Alonso, G Anglada Escudé, D Barrado, S C C Barros, W Baumjohann, M Beck, T BeckW Benz, N Billot, F Biondi, X Bonfils, A Brandeker, C Broeg, T Bárczy, J Cabrera, S Charnoz, C Corral Van Damme, Sz Csizmadia, M B Davies, M Deleuil, O D S Demangeon, B-O Demory, A Erikson, H G Florén, A Fortier, L Fossati, M Fridlund, D Futyan, D Gandolfi, M Gillon, M Guedel, P Guterman, K Heng, K G Isaak, L Kiss, J Laskar, A Lecavelier des Etangs, M Lendl, C Lovis, D Magrin, V Nascimbeni, R Ottensamer, I Pagano, E Pallé, G Peter, G Piotto, D Pollacco, F J Pozuelos, D Queloz, R Ragazzoni, N Rando, H Rauer, C Reimers, I Ribas, S Salmon, N C Santos, G Scandariato, A E Simon, A M S Smith, M Steller, M I Swayne, Gy M Szabó, D Ségransan, N Thomas, S Udry, V Van Grootel, N A Walton

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

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.

Original language	English
Pages (from-to)	77-104
Number of pages	34
Journal	Monthly Notices of the Royal Astronomical Society
Volume	514
Issue number	1
Early online date	25 Nov 2021
DOIs	https://doi.org/10.1093/mnras/stab3371
Publication status	Published - 1 Jul 2022

Keywords

Methods: data analysis
Software: data analysis
Software: public release
Planets and satellites: fundamental parameters

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10.1093/mnras/stab3371

Maxted_2021_MNRAS_Analysis-early-science_AAM
Copyright © 2021 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society. This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the author created accepted manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.1093/mnras/stab3371
Accepted author manuscript, 5.65 MB

Astronomy at St Andrews 2018-2021: Astronomy at St Andrews 2018-2021
Jardine, M. M. (PI), Bonnell, I. A. (CoI), Cameron, A. C. (CoI), Cyganowski, C. J. (CoI), Dominik, M. (CoI), Helling, C. (CoI), Horne, K. D. (CoI), Scholz, A. (CoI), Tojeiro, R. (CoI), Weijmans, A.-M. (CoI), Wild, V. (CoI), Woitke, P. (CoI), Wood, K. (CoI) & Zhao, H. (CoI)
1/04/18 → 31/03/22
Project: Standard

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Maxted, P. F. L., Ehrenreich, D., Wilson, T. G., Alibert, Y., Cameron, A. C., Hoyer, S., Sousa, S. G., Olofsson, G., Bekkelien, A., Deline, A., Delrez, L., Bonfanti, A., Borsato, L., Alonso, R., Escudé, G. A., Barrado, D., Barros, S. C. C., Baumjohann, W., Beck, M., ... Walton, N. A. (2022). Analysis of early science observations with the CHaracterising ExOPlanets Satellite (CHEOPS) using pycheops. Monthly Notices of the Royal Astronomical Society, 514(1), 77-104. https://doi.org/10.1093/mnras/stab3371

@article{b5023eda5b37430791c5f71c3b8ae099,

title = "Analysis of early science observations with the CHaracterising ExOPlanets Satellite (CHEOPS) using pycheops",

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.",

keywords = "Methods: data analysis, Software: data analysis, Software: public release, Planets and satellites: fundamental parameters",

author = "Maxted, {P F L} and D Ehrenreich and Wilson, {T G} and Y Alibert and Cameron, {A Collier} and S Hoyer and Sousa, {S G} and G Olofsson and A Bekkelien and A Deline and L Delrez and A Bonfanti and L Borsato and R Alonso and Escud{\'e}, {G Anglada} and D Barrado and Barros, {S C C} 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 B{\'a}rczy and J Cabrera and S Charnoz and {Van Damme}, {C Corral} and Sz Csizmadia and Davies, {M B} and M Deleuil and Demangeon, {O D S} and B-O Demory and A Erikson and Flor{\'e}n, {H G} and A Fortier and L Fossati and M Fridlund and D Futyan and D Gandolfi and M Gillon and M Guedel and P Guterman and K Heng and Isaak, {K G} and L Kiss and J Laskar and {Lecavelier des Etangs}, A and M Lendl and C Lovis and D Magrin and V Nascimbeni and R Ottensamer and I Pagano and E Pall{\'e} and G Peter and G Piotto and D Pollacco and Pozuelos, {F J} and D Queloz and R Ragazzoni and N Rando and H Rauer and C Reimers and I Ribas and S Salmon and Santos, {N C} and G Scandariato and Simon, {A E} and Smith, {A M S} and M Steller and Swayne, {M I} and Szab{\'o}, {Gy M} and D S{\'e}gransan and N Thomas and S Udry and {Van Grootel}, V and Walton, {N A}",

note = "Funding: ACC and TW acknowledge support from UK Science and Technologies Facilities Council (STFC) ST/R00824/1.",

year = "2022",

month = jul,

day = "1",

doi = "10.1093/mnras/stab3371",

language = "English",

volume = "514",

pages = "77--104",

journal = "Monthly Notices of the Royal Astronomical Society",

issn = "0035-8711",

publisher = "Oxford University Press",

number = "1",

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Maxted, PFL, Ehrenreich, D, Wilson, TG, Alibert, Y, Cameron, AC, Hoyer, S, Sousa, SG, Olofsson, G, Bekkelien, A, Deline, A, Delrez, L, Bonfanti, A, Borsato, L, Alonso, R, Escudé, GA, Barrado, D, Barros, SCC, Baumjohann, W, Beck, M, Beck, T, Benz, W, Billot, N, Biondi, F, Bonfils, X, Brandeker, A, Broeg, C, Bárczy, T, Cabrera, J, Charnoz, S, Van Damme, CC, Csizmadia, S, Davies, MB, Deleuil, M, Demangeon, ODS, Demory, B-O, Erikson, A, Florén, HG, Fortier, A, Fossati, L, Fridlund, M, Futyan, D, Gandolfi, D, Gillon, M, Guedel, M, Guterman, P, Heng, K, Isaak, KG, Kiss, L, Laskar, J, Lecavelier des Etangs, A, Lendl, M, Lovis, C, Magrin, D, Nascimbeni, V, Ottensamer, R, Pagano, I, Pallé, E, Peter, G, Piotto, G, Pollacco, D, Pozuelos, FJ, Queloz, D, Ragazzoni, R, Rando, N, Rauer, H, Reimers, C, Ribas, I, Salmon, S, Santos, NC, Scandariato, G, Simon, AE, Smith, AMS, Steller, M, Swayne, MI, Szabó, GM, Ségransan, D, Thomas, N, Udry, S, Van Grootel, V & Walton, NA 2022, 'Analysis of early science observations with the CHaracterising ExOPlanets Satellite (CHEOPS) using pycheops', Monthly Notices of the Royal Astronomical Society, vol. 514, no. 1, pp. 77-104. https://doi.org/10.1093/mnras/stab3371

TY - JOUR

T1 - Analysis of early science observations with the CHaracterising ExOPlanets Satellite (CHEOPS) using pycheops

AU - Maxted, P F L

AU - Ehrenreich, D

AU - Wilson, T G

AU - Alibert, Y

AU - Cameron, A Collier

AU - Hoyer, S

AU - Sousa, S G

AU - Olofsson, G

AU - Bekkelien, A

AU - Deline, A

AU - Delrez, L

AU - Bonfanti, A

AU - Borsato, L

AU - Alonso, R

AU - Escudé, G Anglada

AU - Barrado, D

AU - Barros, S C C

AU - Baumjohann, W

AU - Beck, M

AU - Beck, T

AU - Benz, W

AU - Billot, N

AU - Biondi, F

AU - Bonfils, X

AU - Brandeker, A

AU - Broeg, C

AU - Bárczy, T

AU - Cabrera, J

AU - Charnoz, S

AU - Van Damme, C Corral

AU - Csizmadia, Sz

AU - Davies, M B

AU - Deleuil, M

AU - Demangeon, O D S

AU - Demory, B-O

AU - Erikson, A

AU - Florén, H G

AU - Fortier, A

AU - Fossati, L

AU - Fridlund, M

AU - Futyan, D

AU - Gandolfi, D

AU - Gillon, M

AU - Guedel, M

AU - Guterman, P

AU - Heng, K

AU - Isaak, K G

AU - Kiss, L

AU - Laskar, J

AU - Lecavelier des Etangs, A

AU - Lendl, M

AU - Lovis, C

AU - Magrin, D

AU - Nascimbeni, V

AU - Ottensamer, R

AU - Pagano, I

AU - Pallé, E

AU - Peter, G

AU - Piotto, G

AU - Pollacco, D

AU - Pozuelos, F J

AU - Queloz, D

AU - Ragazzoni, R

AU - Rando, N

AU - Rauer, H

AU - Reimers, C

AU - Ribas, I

AU - Salmon, S

AU - Santos, N C

AU - Scandariato, G

AU - Simon, A E

AU - Smith, A M S

AU - Steller, M

AU - Swayne, M I

AU - Szabó, Gy M

AU - Ségransan, D

AU - Thomas, N

AU - Udry, S

AU - Van Grootel, V

AU - Walton, N A

N1 - Funding: ACC and TW acknowledge support from UK Science and Technologies Facilities Council (STFC) ST/R00824/1.

PY - 2022/7/1

Y1 - 2022/7/1

N2 - 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.

AB - 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.

KW - Methods: data analysis

KW - Software: data analysis

KW - Software: public release

KW - Planets and satellites: fundamental parameters

U2 - 10.1093/mnras/stab3371

DO - 10.1093/mnras/stab3371

M3 - Article

SN - 0035-8711

VL - 514

SP - 77

EP - 104

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 1

ER -

Analysis of early science observations with the CHaracterising ExOPlanets Satellite (CHEOPS) using pycheops

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Keywords

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Astronomy at St Andrews 2018-2021: Astronomy at St Andrews 2018-2021

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