LAMOST Observations of Flaring M Dwarfs in the Kepler Field

Abstract

A sample of the LAMOST spectra of the early type M0-M3 dwarfs is compared with the Kepler observations. It is found that M dwarfs with strong chromospheric emission in $H_{\alpha }$ have large flare activity in general. The rotational periods derived from the Kepler measurements have close correlations with the sizes of the flares, the power-law distribution index and the equivalent widths of the $H_{\alpha }$ emission. A clear trend exists for higher magnetic activities being detected in faster rotating M dwarfs (rotation periods $<$ 20 day).

18 pages, 10 figures

References in corpus (7)

• Kepler Flares I. Active and Inactive M dwarfs
• A Re-appraisal of the Habitability of Planets Around M Dwarf Stars
• Kepler Flares II: The Temporal Morphology of White-Light Flares on GJ 1243
• The First Direct Measurements of Magnetic Fields on Very Low-Mass Stars
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• Kepler Flares III: Stellar Activity on GJ 1245 A and B
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Cited by in corpus (6)

• Stellar flares observed in long cadence data from the Kepler mission
• Further evidence of the link between activity and metallicity using the flaring properties of stars in the Kepler field
• Frequent flare events on the short-period M-type eclipsing binary BX Tri
• Exploring the short-term variability of H$\alpha$ and H$\beta$ emissions in a sample of M dwarfs
• Low-mass and sub-stellar eclipsing binaries in stellar clusters
• Exploring stellar activity in a sample of active M dwarfs