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Statistical properties of starspots on solar-type stars and their correlation with flare activity

Published online by Cambridge University Press:  03 March 2020

Hiroyuki Maehara
Hiroyuki Maehara*
Affiliation:
Okayama Observatory, Kyoto University, 3037-5 Honjo, Kamogata, Asakuchi, Okayama, Japan email: maehara@kwasan.kyoto-u.ac.jp
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Abstract

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We analyzed the statistical properties of starspots on solar-type stars and the correlation between properties of starspots and flare activity using observations from the Kepler mission. We found the size distribution of starspots on solar-type stars shows the power-law distribution and both size distributions of starspots on slowly-rotating solar-type stars and of relatively large sunspots are roughly lie on the same power-law line. We also found that the frequency-energy distributions for superflares and solar flares from spots with different sizes are the same for solar-type stars and the Sun. These results suggest that the magnetic activity on solar-type stars and that on the Sun are caused by the same physical processes

Keywords

stars: flarestars: spots
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium A30: Astronomy in Focus XXX , August 2018 , pp. 369 - 372
Copyright
© International Astronomical Union 2020

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