Planned intervention: On Wednesday April 3rd 05:30 UTC Zenodo will be unavailable for up to 2-10 minutes to perform a storage cluster upgrade.
Published October 8, 2021 | Version v1
Poster Open

Rotation and flares of M dwarfs with habitable zones accessible to TESS

  • 1. Institut fuer Astronomie und Astrophysik Tuebingen, Sand 1, 72076 Tuebingen, Germany
  • 2. Institut fuer Astronomie und Astrophysik Tuebingen, Sand 1, 72076 Tuebingen, Germany; INAF - Osservatorio Astronomico di Palermo, Piazza del Parlamento 1, 90134 Palermo, Italy

Description

I present an analysis of starspot modulation and flares in the TESS light curves of 112 M dwarfs with a TESS magnitude <=11.5 mag that are listed in the TESS Habitable Zone Star Catalog (HZCat, Kaltenegger et al. 2019). Understanding the magnetic activity of these potential exoplanet host stars is crucial for planet characterizations since an active, flaring host star might impact planetary habitability. Our sample is of particular interest as it comprises stars in the HZCat with sufficiently long TESS observation times for planets to be detected in the entire habitable zone. We detected more than 2000 optical flares in this sample and I discuss the relation of flares with spectral type and rotation period. I also present flare frequency distributions and the flux reaching the habitable zone during flare events.

Files

PLATO_conference_poster.pdf

Files (714.5 kB)

Name Size Download all
md5:6ca3b978479c9b353d8932c12a0c3904
714.5 kB Preview Download

Additional details

Related works

Is identical to
Poster: 10.5281/zenodo.5126922 (DOI)
Is new version of
Poster: 10.5281/zenodo.4560827 (DOI)

References

  • Stelzer, Beate et al. (2016). A path towards understanding the rotation-activity relation of M dwarfs with K2 mission, X-ray and UV data. MNRAS, 463, 1844
  • Raetz, Stefanie et al. (2020). Rotation-activity relations and flares of M dwarfs with K2 long- and short-cadence data. A&A, 637, A22
  • Hawley, Suzanne et al. (2014). Kepler Flares. I. Active and Inactive M Dwarfs. ApJ, 797, 121
  • Kaltenegger, L. et al. (2019). TESS Habitable Zone Star Catalog . ApJ, 874, L8