Stellar flares from blended and neighbouring stars in Kepler short cadence observations
| Autor: | Evgenya L. Shkolnik, R. O. Parke Loyd, James A. G. Jackman |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Physics
High energy 010504 meteorology & atmospheric sciences FOS: Physical sciences Astronomy and Astrophysics Astrophysics 01 natural sciences Kepler law.invention Stars Astrophysics - Solar and Stellar Astrophysics Space and Planetary Science law 0103 physical sciences Cadence 010303 astronomy & astrophysics Solar and Stellar Astrophysics (astro-ph.SR) 0105 earth and related environmental sciences Flare |
| Zdroj: | Monthly Notices of the Royal Astronomical Society. 502:2033-2042 |
| ISSN: | 1365-2966 0035-8711 |
| DOI: | 10.1093/mnras/stab166 |
| Popis: | We present the results of a search for stellar flares from stars neighbouring the target sources in the Kepler short cadence data. These flares have been discarded as contaminants in previous surveys and therefore provide an unexplored resource of flare events, in particular high energy events from faint stars. We have measured M dwarf flare energies up to 1.5$\times$10^35 erg, pushing the limit for flare energies measured using Kepler data. We have used our sample to study theflaring activity of wide binaries, finding that the lower mass counterpart in a wide binary flares more often at a given energy. Of the 4430 flares detected in our original search, 298 came from a neighbouring star, a rate of 6.7$\pm$0.4 per cent for the Kepler short cadence lightcurves. We have used our sample to estimate a 5.8$\pm$0.1 per cent rate of false positive flare events in studies using TESS short cadence data. 10 pages, 2 figures, 2 tables. Accepted for publication in the Monthly Notices of the Royal Astronomical Society |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|