A dataset provided by the European Space Agency

Obs ID 2593839
Target/Line-of-sight Measuring the nanoflaring activity of bright M dwarfs
Gaia DR2 ID Gaia DR2 3209938366665770752
URL https://cheops.unige.ch/archive_browser/?visit-id=2593839
DOI https://doi.org/10.57780/esa-rfo0ju9
Author European Space Agency, Julien poyatos
Description of observation
  • Target RA (J2000): 82.8641510009766 °
  • Target Dec (J2000): -3.67722988128662 °
  • Gaia GMag: 7.11
  • Programme ID: CH_PR250004
  • PI of observing programme: Julien poyatos
  • Title of programme: Measuring the nanoflaring activity of bright M dwarfs
  • Abstract: The stochastic nature of stellar flares makes them unlikely to be frequent enough to explain the measured coronal heating of their star. Instead, nanoflares, with energies ranging from 10^22 to 10^25 erg, have been proposed as alternative contributors due to their higher occurrence rates since they are exponentially more frequent than regular flares (> 10^28 erg). However, the mechanisms responsible for their generation are still unclear. Through this filler proposal, we aim to use the exquisite photometric precision of CHEOPS to gather nanoflare statistics from bright M dwarfs and provide new insights on some of the current open questions concerning them. Specifically, we will first determine the nanoflare Flare Frequency Distribution (FFD) deviation from the regular flares FFD, which would indicate that a different reconnection process is at play. We will also test if nanoflaring activity could be the cause of the p-mode oscillations detected on some M dwarf stars. Finally, we will observe partially and fully convective M dwarfs to determine if the presence of a tachocline has an impact on the nanoflaring rate.
Temporal Coverage 2024-11-21T08:29:42Z / 2024-11-21T10:46:00Z
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 2024-12-19T02:02:49Z
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, Julien poyatos et al., 2024, 'Measuring the nanoflaring activity of bright M dwarfs', 3.0, European Space Agency, https://doi.org/10.57780/esa-rfo0ju9
Rights Data hosted in the ESA Space Science Archives are distributed under the CC BY-NC 3.0 IGO license.