Fig: A Comparative Study of the Magnetic Activities of Low-mass Stars
from M-type to G-type
C.-L. Lin: By analyzing thousands of stars’ light curves contributed by the K2 mission
with outstanding photometric precision, we detected 1647 and 3589 flares on 343 K
and 548 M dwarfs, respectively. We compared the flare properties of each type star,
including the 279 flare G dwarfs with 1547 flares presented in Shibayama (2013) and
found that the later-type of stars tend to be more magnetically active. Furthermore,
the fast rotating K and M stars have similar power-law indices of 1.82±0.03 and
1.78±0.02, respectively, of flare frequency distribution. It implies that their magnetic
mechanisms may be similar. Lin, C.-L., et al. ( Including Prof. Ip, Wing-Huen, Hou,
Wei-Cie, Huang, Li-Ching, and Chang, Han-Yuan.), 2019, ApJ, 873, 97
