A dataset provided by the European Space Agency

Obs ID 1303499
Target/Line-of-sight Teasing a star with a planet. A CHEOPS study of HD 17156 and its hot Jupiter.
Gaia DR2 ID Gaia DR2 545560867790611072
URL https://cheops.unige.ch/archive_browser/?visit-id=1303499
DOI https://doi.org/10.5270/esa-1rtw22e
Author European Space Agency, Ignazio pillitteri
Description of observation
  • Target RA (J2000): 42.435375 °
  • Target Dec (J2000): 71.75323 °
  • Gaia GMag: 8.033

  • Programme ID: CH_PR210001
  • PI of observing programme: Ignazio pillitteri
  • Title of programme: Teasing a star with a planet. A CHEOPS study of HD 17156 and its hot Jupiter.
  • Abstract: The large number of close-in Jupiter-size exoplanets prompts the question whether star-planet interaction (SPI) effects can be detected. We focus our attention on the system HD 17156, having a Jupiter-mass planet in a very eccentric orbit. A brightening of the stellar corona in X-rays was observed during a periastron passage of its planet and this could be a systematic effect of magnetic SPI. With this proposal we aim at the detection of any increase of the flux in the CHEOPS band when the planet is close to periastron. We also aim at investigating the origin of the flaring activity, whether it is due to the interaction of the stellar and planetary magnetic fields, or originating from accretion of material tidally stripped by the planet and falling onto the stellar surface.
Temporal Coverage 2020-12-07T19:16:00Z / 2020-12-08T15:15:00Z
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 2025-01-27T20:35:09Z
Last Update 2025-01-27
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, Ignazio pillitteri et al., 2025, 'Teasing a star with a planet. A CHEOPS study of HD 17156 and its hot Jupiter.', 3.0, European Space Agency, https://doi.org/10.5270/esa-1rtw22e