GT Observations of Active Cool Stars: 47 Cas

GTThe activity of 47 Cas with about 1000 times the Sun.s Xray luminosity isattributed to a onesolarmass companion to the optically visible F star. Thesystem very young. Frequent flares are detected in the Xray light curve. Thistarget is part of a study on the Sun in Time. on the decline of the coronalactivity of a solar analog with time. Important aspects are the emission measuredistribution, the abundance pattern that might be activity dependent, and flarevariability studies with respect to temperatures, abundances, densities, andmass motions. The pn camera and one MOS will be used in TIMING/medium filtermode. Coordinated radio observations with the VLA will be requested. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]