Understanding Coronal Super-Saturation

Despite 15 years since discovery, the cause of supersaturation the reductionof coronal Xray activity in very fastrotating G and Kstars is still notresolved, yet must provide important clues to the behaviour of magnetic dynamos,Bfield topology, and angular momentum loss at extreme rotation rates. Bymeasuring the Xray activity of several small Mdwarfs, rotating at twice therate of previously studied objects, we will determine which parameter (rotationperiod, Rossby number or Keplerian corotation radius) best predictssupersaturation and hence test whether centrifugal stripping of the outercorona is a viable model. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]