A dataset provided by the European Space Agency

Obs ID 2579285
Target/Line-of-sight A CHEOPS Light Curve of e Eridani with Contemporaneous Long-Baseline Optical Interferometry and Extreme Precision Radial Velocity Observations
Gaia DR2 ID Gaia DR2 5164707970261630080
URL https://cheops.unige.ch/archive_browser/?visit-id=2579285
DOI https://doi.org/10.57780/esa-m9xngp0
Author European Space Agency, Rachael roettenbacher
Description of observation
  • Target RA (J2000): 53.2326850891113 °
  • Target Dec (J2000): -9.45825958251953 °
  • Gaia GMag: 3.47
  • Programme ID: CH_PR250017
  • PI of observing programme: Rachael roettenbacher
  • Title of programme: A CHEOPS Light Curve of e Eridani with Contemporaneous Long-Baseline Optical Interferometry and Extreme Precision Radial Velocity Observations
  • Abstract: Understanding the impact of stellar surfaces to the radial velocities detected is essential to on-going studies aiming to find Earth analogs. These studies are inhibited by no clear method of accounting for the stellar contribution. One potential solution is to image the stellar surface in order to model its radial velocity independently of any observed radial velocities. To explore the potential of this method, we propose to obtain a high-precision CHEOPS light curve of the spotted, planet-hosting star e Eridani. With these observations, we will reconstruct the stellar surface of e Eri with a light-curve inversion technique. These observations will be contemporaneous with interferometric observations that will be used to image the stellar surface. This surface will be compared to the CHEOPS surface to strengthen the validity of the individual images. From the surface, we will model the radial velocity signal, which will be compared to a radial velocity curve obtained contemporaneously. Using these new and archival observations, we will remove the signature of the reconstructed stellar surfaces to reveal a clear signal of the known planet as a proof-of-concept that imaged stellar surfaces can aid in the detection of Earth analogs. We will compare these results with the same test done with interferometric images to understand if images from photometry are sufficient or if the more detailed interferometric images are necessary.
Temporal Coverage 2024-11-08T12:46:00Z / 2024-11-09T05:02:00Z
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 2024-12-19T02:03:19Z
Keywords CHEOPS exoplanet data, ESA CHEOPS mission dataset, exoplanet transit photometry data, high-precision space photometry observations, exoplanet light curves dataset, ultra-high precision stellar photometry, transit depth measurements, exoplanet radius determination data, time-series photometric observations, short-cadence photometry dataset, CHEOPS calibrated level 2 data, aperture photometry space data, stellar variability monitoring data, transiting exoplanet observations, hot Jupiter transit photometry, super-Earth transit data, exoplanet ephemeris refinement observations, phase curve photometry dataset, space-based optical photometry, visible wavelength exoplanet data, FITS light curve files, flux time-series exoplanet data, CHEOPS observation ID dataset, exoplanet follow-up observations, stellar host characterization photometry, ESA CHEOPS science archive data, precision transit timing measurements
Acknowledgements https://www.cosmos.esa.int/web/cheops-guest-observers-programme/publication-guidelines
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Rachael roettenbacher et al., 2024, 'A CHEOPS Light Curve of e Eridani with Contemporaneous Long-Baseline Optical Interferometry and Extreme Precision Radial Velocity Observations', 3.0, European Space Agency, https://doi.org/10.57780/esa-m9xngp0
Rights Data hosted in the ESA Space Science Archives are distributed under the CC BY-NC 3.0 IGO license.