Improved Age Estimation for Solar-Type Dwarfs Using Activity-Rotation Diagnostics

@article{Mamajek2008ImprovedAE,
  title={Improved Age Estimation for Solar-Type Dwarfs Using Activity-Rotation Diagnostics},
  author={Eric E. Mamajek and L. A. Hillenbrand},
  journal={The Astrophysical Journal},
  year={2008},
  volume={687},
  pages={1264-1293}
}
While the strong anticorrelation between chromospheric activity and age has led to the common use of the Ca II H and K emission index (R'_(HK) = L_(HK)/L_(bol)) as an empirical age estimator for solar-type dwarfs, existing activity-age relations produce implausible ages at both high and low activity levels.We have compiled R'_(HK) HK data from the literature for young stellar clusters, richly populating for the first time the young end of the activity-age relation. Combining the cluster… 
Calibration of the Hα Age–Activity Relation for M Dwarfs
In this work, we calibrate the relationship between Hα emission and M dwarf ages. We compile a sample of 892 M dwarfs with Hα equivalent width (Hα EW) measurements from the literature that are either
How accurately can we age-date solar-type dwarfs using activity/rotation diagnostics?
  • E. Mamajek
  • Physics
    Proceedings of the International Astronomical Union
  • 2008
Abstract It is well established that activity and rotation diminishes during the life of sun-like main sequence (~F7-K2V) stars. Indeed, the evolution of rotation and activity among these stars
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