Poster Open Access
Chromospheric activity to age relationship among Sun-like stars
Gondoin, Philippe
Editor(s)
Wolk, ScottMost recent studies have established the viability of deriving usable chromospheric ages for solar-type stars older than 600 Myrs up to at least 6 Gyr, providing that mass and metallicity effects are accounted for. In order to avoid the uncertainty associated with the age determination of field stars, I characterised the long-term evolution of chromospheric activity on Sun-like stars by combining an empirical model of their rotation evolution in intermediate-age open clusters with rotation-activity relationships. The results indicate that the chromospheric activity evolution of Sun-like stars with ages between 1 and 6 Gyr and masses between 0.7 and 1.1 M☉ is steeper than the relationship R’HK ~ age^{-0.5} generally used.
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PGChromosphericActivityPoster_CoolStars_2021.pdf
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- Publication date:
- February 26, 2021
- DOI:
-
- Keyword(s):
- Cool stars on the main sequence, Sun-like stars, chromospheric activity, rotation evolution
- Meeting:
- The 20.5th Cambridge Workshop on Cool Stars, Stellar System, and the Sun (CS20.5), virtually anywhere, March 2-4, 2021 (Session VI, Part 1)
- Communities:
- License (for files):
- Creative Commons Attribution 4.0 International