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Exploiting timing capabilities of the CHEOPS mission with warm-Jupiter planets

Borsato, L. ; Piotto, G. ; Gandolfi, D. ; Deleuil, M. and Walton, N. (2021) In Monthly Notices of the Royal Astronomical Society 506(3). p.3810-3830
Abstract
We present 17 transit light curves of seven known warm-Jupiters observed with the CHaracterising ExOPlanet Satellite (CHEOPS). The light curves have been collected as part of the CHEOPS Guaranteed Time Observation (GTO) program that searches for transit-timing variation (TTV) of warm-Jupiters induced by a possible external perturber to shed light on the evolution path of such planetary systems. We describe the CHEOPS observation process, from the planning to the data analysis. In this work, we focused on the timing performance of CHEOPS, the impact of the sampling of the transit phases, and the improvement we can obtain by combining multiple transits together. We reached the highest precision on the transit time of about 13-16 s for the... (More)
We present 17 transit light curves of seven known warm-Jupiters observed with the CHaracterising ExOPlanet Satellite (CHEOPS). The light curves have been collected as part of the CHEOPS Guaranteed Time Observation (GTO) program that searches for transit-timing variation (TTV) of warm-Jupiters induced by a possible external perturber to shed light on the evolution path of such planetary systems. We describe the CHEOPS observation process, from the planning to the data analysis. In this work, we focused on the timing performance of CHEOPS, the impact of the sampling of the transit phases, and the improvement we can obtain by combining multiple transits together. We reached the highest precision on the transit time of about 13-16 s for the brightest target (WASP-38, G = 9.2) in our sample. From the combined analysis of multiple transits of fainter targets with G ≥ 11, we obtained a timing precision of ∼2 min. Additional observations with CHEOPS, covering a longer temporal baseline, will further improve the precision on the transit times and will allow us to detect possible TTV signals induced by an external perturber. © 2021 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society. (Less)
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author collaboration
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Planets and satellites, Techniques: photometric
in
Monthly Notices of the Royal Astronomical Society
volume
506
issue
3
pages
21 pages
publisher
Oxford University Press
external identifiers
  • scopus:85112154342
ISSN
1365-2966
DOI
10.1093/mnras/stab1782
language
English
LU publication?
no
id
12f01baf-1abd-4b05-86ca-626ccea7fc8f
date added to LUP
2021-09-14 12:49:12
date last changed
2022-04-27 03:53:23
@article{12f01baf-1abd-4b05-86ca-626ccea7fc8f,
  abstract     = {{We present 17 transit light curves of seven known warm-Jupiters observed with the CHaracterising ExOPlanet Satellite (CHEOPS). The light curves have been collected as part of the CHEOPS Guaranteed Time Observation (GTO) program that searches for transit-timing variation (TTV) of warm-Jupiters induced by a possible external perturber to shed light on the evolution path of such planetary systems. We describe the CHEOPS observation process, from the planning to the data analysis. In this work, we focused on the timing performance of CHEOPS, the impact of the sampling of the transit phases, and the improvement we can obtain by combining multiple transits together. We reached the highest precision on the transit time of about 13-16 s for the brightest target (WASP-38, G = 9.2) in our sample. From the combined analysis of multiple transits of fainter targets with G ≥ 11, we obtained a timing precision of ∼2 min. Additional observations with CHEOPS, covering a longer temporal baseline, will further improve the precision on the transit times and will allow us to detect possible TTV signals induced by an external perturber. © 2021 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society.}},
  author       = {{Borsato, L. and Piotto, G. and Gandolfi, D. and Deleuil, M. and Walton, N.}},
  issn         = {{1365-2966}},
  keywords     = {{Planets and satellites; Techniques: photometric}},
  language     = {{eng}},
  number       = {{3}},
  pages        = {{3810--3830}},
  publisher    = {{Oxford University Press}},
  series       = {{Monthly Notices of the Royal Astronomical Society}},
  title        = {{Exploiting timing capabilities of the CHEOPS mission with warm-Jupiter planets}},
  url          = {{http://dx.doi.org/10.1093/mnras/stab1782}},
  doi          = {{10.1093/mnras/stab1782}},
  volume       = {{506}},
  year         = {{2021}},
}