A1 Refereed original research article in a scientific journal
Short-duration high-amplitude flares detected on the M dwarf star KIC 5474065
Authors: Ramsay Gavin, Doyle J Gerry, Hakala Pasi, Garcia-Alvarez David, Brooks Adam, Barclay Thomas, Still Martin
Publisher: Oxford University Press
Publication year: 2013
Journal: Monthly Notices of the Royal Astronomical Society
Journal acronym: MNRAS
Number in series: 3
Volume: 434
Issue: 3
First page : 2451
Last page: 2457
Number of pages: 7
ISSN: 0035-8711
DOI: https://doi.org/10.1093/mnras/stt1182
Abstract
Using data obtained during the RATS-Kepler project, we identified one short-duration flare in a 1 h sequence of ground-based photometry of the dwarf star KIC 5474065. Observations made using Gran Telescopio Canarias show that it is a star with an M4V spectral type. Kepler observations made using 1 min sampling show that KIC 5474065 exhibits large-amplitude (δF/F > 0.4) optical flares which have a duration as short as 10 min. We compare the energy distribution of flares from KIC 5474065 with that of KIC 9726699, which has also been observed using 1-min sampling, and ground-based observations of other M dwarf stars in the literature. We discuss the possible implications these short-duration, relatively low-energy flares would have on the atmosphere of exoplanets orbiting in the habitable zone of these flare stars.
Using data obtained during the RATS-Kepler project, we identified one short-duration flare in a 1 h sequence of ground-based photometry of the dwarf star KIC 5474065. Observations made using Gran Telescopio Canarias show that it is a star with an M4V spectral type. Kepler observations made using 1 min sampling show that KIC 5474065 exhibits large-amplitude (δF/F > 0.4) optical flares which have a duration as short as 10 min. We compare the energy distribution of flares from KIC 5474065 with that of KIC 9726699, which has also been observed using 1-min sampling, and ground-based observations of other M dwarf stars in the literature. We discuss the possible implications these short-duration, relatively low-energy flares would have on the atmosphere of exoplanets orbiting in the habitable zone of these flare stars.
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