Lithium in field Am and normal A-F-type stars
  Preliminary abundances of lithium and a few other elements have been obtained for 31 field Am stars with good Hipparcos parallaxes, as well as for 36 normal A and F stars. Radial and projected rotational velocities were determined as well. We examine the Li abundance as a function of the stellar parameters: for normal stars, it is clearly bimodal for Teff < 7500 K, while Am-Fm stars are all somewhat Li-deficient in this range. The most Li-deficient stars - either Am or normal - tend to be at least slightly evolved, but the reverse is not true. 
P. North (1), F. Betrix (2), C. Besson (2) ((1) EPFL, Switzerland, (2)   formerly at Institut d'Astronomie, Universite de La...