F-TYPE AND G-TYPE STARS WITH PLANETARY COMPANIONS - UPSILON-ANDROMEDAE, RHO(1) CANCRI, TAU-BOOTIS, 16-CYGNI AND RHO-CORONAE-BOREALIS

Accurate stellar parameters are presented for the F- and G-type stars nu And, rho(1) Cnc, tau Boo, 16 Cyg, and rho CrB, which are deemed to possess planetary companions from intense Doppler monitoring. Evolutio nary tracks that employ detailed around wt: model atmospheres as upper boundary condition and allow for al. (1997). helium diffusion are com puted for the individual stars to derive the stellar masses and ages. From a comparison of the spectroscopic parallaxes with the accurate di stances available from the Hipparcos satellite well-defined constraint s on the stellar surface gravities are obtained in good agreement with out spectroscopically deduced values.