  This work presents the determination of the effective temperature, gravity,
metallicity, mass, luminosity and age of 27 young early-type stars, most of
them in the age range 1-10 Myr, and three -suspected- hot companions of post-T
Tauri stars belonging to the Lindroos binary sample. Most of these objects show
IR excesses in their spectral energy distributions, which are indicative of the
presence of disks. The work is relevant in the fields of stellar physics,
physics of disks and formation of planetary systems.
  Spectral energy distributions and mid-resolution spectra were used to
estimate the effective temperature. The comparison of the profiles of the
Balmer lines with synthetic profiles provides the value of the stellar gravity.
High-resolution optical observations and synthetic spectra are used to estimate
the metallicity, [M/H]. Once these three parameters are known for each star,
evolutionary tracks and isochrones provide estimations of the mass, luminosity,
age and distance (or upper limits in some cases). The method is original in the
sense that it is distance-independent, i.e. the estimation of the stellar
parameters does not require, as it happens in other works, the knowledge of the
distance to the object. A detailed discussion on some individual objects, in
particular VV Ser, RR Tau, 49 Cet and the three suspected hot companions of
post-T Tauris, is presented. The paper also shows the difficulty posed by the
morphology and behaviour of the system star+disk in the computation of the
stellar parameters.
