Stellar Cycle Sampling\: the X-Ray Expansion

Within the past two years, the number of M stars known to have stellar cycleshas grown from a handful to a few dozen, including several fully convectivestars which, it was generally believed, are not capable of supporting magneticcycles. And of the hundreds of stars with cycles, only seven have been monitoredin X rays (one of them a late M stars), but their results tentatively pointtoward a surprisingly simple relationship between Xray cycle amplitude andRossby number (Ro). These observational discoveries have occurred at the sametime as significant advances in theoretical models, some of which predict thatfully convective stars CAN sustain cycles. We request observations of four starsthat span a wide range of Ro and spectral type and will expand the Xray perspective. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]