Coronal Structure of the Long-Period Binary: Lambda and

AXAF/HETG spectra of the RS CVn binary, Lambda And, will probe the temperature and density of an unusually hot corona, whose structure has been outlined through extreme ultraviolet and X-ray studies. Lambda And provides an important link for understanding the activity/rotation relation, showing evidence in the photosphere for both high latitude and equatorial spots. The proposed AXAF grating observation will quantify the coronal emission measure distribution over the full temperature range, electron densities for at least two distinct temperatures, and elemental abundances needed to calculate radiative losses. Coronal abundances from high and low First Ionization Potential will be measured and compared with well known photospheric abundances.