Publications of The Korean Astronomical Society (천문학논총)
- Volume 1 Issue 1
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- Pages.13-20
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- 1984
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- 1225-1534(pISSN)
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- 2287-6936(eISSN)
Chromospheric Activity, Rotation and Age On Lower Main Sequence Stars
- Park, Young-Deuk (Department of Astronomy, Seoul National University) ;
- Yun, Hong-Sik (Department of Astronomy, Seoul National University)
- Published : 1984.12.31
Abstract
New empirical relations between stellar CaII emission and rotation or age are derived by analyzing Wilson's CaII flux measurements (1968, 1978) of lower main sequence stars, and then we correlate them with their age and rotation rate. It is found that stellar chromospheric emission decays smoothly with age as a star slows down rotationally, establishing that both the emission level and rotation rate decrease with the square root of age.
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