A dataset provided by the European Space Agency

Obs ID 1949940
Target/Line-of-sight XO-3b
Gaia DR2 ID Gaia DR2 470650560777348352
URL https://cheops.unige.ch/archive_browser/?visit-id=1949940
DOI https://doi.org/10.57780/esa-j219xcv
Author European Space Agency
Description of observation
  • Target RA (J2000): 65.469582 °
  • Target Dec (J2000): 57.81720 °
  • Gaia GMag: 9.85

  • Programme ID: CH_PR230011
  • PI of observing programme: Yang
  • Title of programme: Transit Timing Variations of XO-3b: Gaining Insights into the Orbital Evolution of a Hot Jupiter
  • Abstract: XO-3b is a hot Jupiter (Winn et al. 2008) with reported transit timing variations (TTVs), which provides evidence for a decaying orbital period (Yang & Wei 2022). The physical origin of the TTVs are not clearly known. The high sampling rate and precision of CHEOPS data would result in accurate transit timing, which would distinguish between different physical scenarios for the orbital evolution of XO-3b. The timing difference between a constant period model and a period decay model would be 8 minutes for CHEOPS AO3, which would resolve the uncertainties that arise from the scatter in early measurements from ground-based telescopes. Measuring the transit times with such high precision will provide the first constraints on the interior structure of XO-3b if tidal dissipation is the dominant mechanism for orbital evolution, and along with the results for WASP-161b, will reveal the physical processes that resulted in the formation of these hot Jupiters. We therefore propose observing three primary transit events of XO-3b, with each visit lasting 7 orbits, using CHEOPS.
Temporal Coverage 2022-11-29T23:45:51Z / 2022-11-30T11:18:00Z
Version 3.0
Mission Description CHEOPS (Benz et al., https://doi.org/10.1007/s10686-020-09679-4) is a European Space Agency (ESA) mission in partnership with Switzerland with important contributions to the payload and the ground segment from Austria, Belgium, France, Germany, Hungary, Italy, Portugal, Spain, Sweden and the United Kingdom.

The satellite has a single payload comprising an ultra-high precision photometer covering the 330 - 1100 nm wavelength range in a single photometric band. Observations are made as part of the Guaranteed Time Observing Programme that is formulated by the CHEOPS Science Team, and the Guest Observers Programme through which the Community at large can apply for CHEOPS time.
Creator Contact https://www.cosmos.esa.int/web/cheops/contact
Date Published 2024-10-31T19:59:10Z
Keywords CHEOPS, EXOPLANETS, wide-band photometer
Acknowledgements https://www.cosmos.esa.int/web/cheops-guest-observers-programme/publication-guidelines
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2024, 'XO-3b', 3.0, European Space Agency, https://doi.org/10.57780/esa-j219xcv