A dataset provided by the European Space Agency

Obs ID 1518703
Target/Line-of-sight WASP-189
Gaia DR2 ID Gaia DR2 6339097679918871168
URL https://cheops.unige.ch/archive_browser/?visit-id=1518703
DOI https://doi.org/10.5270/esa-6ov1v7j
Author European Space Agency
Description of observation
  • Target RA (J2000): 225.686951 °
  • Target Dec (J2000): -3.03139 °
  • Gaia GMag: 6.554

  • Programme ID: CH_PR110047
  • Programme Manager: SMITH
  • PI of observing programme: Benz
  • Title of programme: FEATURE.CHAR - Stellar obliquity measurements from gravity darkening
  • Abstract: We will measure the angle between the axes of stellar rotation and planetary orbit (a.k.a. the obliquity), using gravity darkened transits of planets orbiting fast-rotating stars. Fast-rotating stars (vsini ~ 100 km/s) exhibit significant oblateness (polar flattening), resulting in a higher surface gravity at the stars poles. This results in the poles being hotter and brighter than the equatorial regions. A planetary transit across such a stellar disk will produce a light curve whose shape and symmetry is strongly dependent on the stellar inclination, and the obliquity, allowing measurement of both these quantities.
Temporal Coverage 2021-06-26T12:01:50Z / 2021-06-27T01:13:00Z
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 2024-12-17T11:32:51Z
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, 'WASP-189', 3.0, European Space Agency, https://doi.org/10.5270/esa-6ov1v7j