2020/12/17 by O. Maryeva, Olga Maryeva, K. Bicz +6 · 2 citations
Physics and Astronomy · #Astronomy #Astrophysics #Astrophysics and Star Formation Studies #Flare #Flare star #K-type main-sequence star #Light curve #Open cluster #Photometry (optics) #Physics #Solar and Space Plasma Dynamics #Stars #Stellar, planetary, and galactic studies #T Tauri star #astro-ph.SR
paper · pdf · doi:10.31577/caosp.2021.51.1.78
published in Contributions of the Astronomical Observatory Skalnaté Pleso 51(1) · 20 pages, 9 figures, article based on the project work at ERASMUS+ GATE 2020 Summer school organised by Masaryk university Brno, Czech Republic. Accepted for publication to Contrib. Astron. Obs. Skalnate Pleso
arxiv created 2020/12/17 · openalex publication_date 2021/01/01 · openalex created_date 2021/01/05 · arxiv updated 2021/02/10 · openalex updated_date 2026/08/05
The study is devoted to search for flare stars among confirmed members of Galactic open clusters using high-cadence photometry from TESS mission. We analyzed 957 high-cadence light curves of members from 136 open clusters. As a result, 56 flare stars were found, among them 8 hot B-A type objects. Of all flares, 63 % were detected in sample of cool stars (T eff < 5000 K), and 29 % -in stars of spectral type G, while 23 % in K-type stars and approximately 34% of all detected flares are in M-type stars. Using the FLATW'RM (FLAre deTection With Ransac Method) flare finding algorithm, we estimated parameters of flares and rotation period of detected flare stars. The flare with the largest amplitude appears on the M3 type EQ Cha star. Statistical analysis did not reveal any direct correlation between ages, rotation periods and flaring activity.