Introduction: The European Galactic Plane Surveys (EGAPS) will for the first time ever map the complete galactic plane (10x360 degrees) down to 21st magnitude in u', g', r', i' and H-alpha and partly in He I 5875. It will complete a database of ~1 billion objects. The aim of EGAPS is to study populations of short-lived stellar and binary phases in

We have developed TGMETalpha in order to determine T[eff], logg, [Fe/H] and [alpha/Fe] for large samples of FGK stars observed at various spectral resolutions. Tests on several hundred echelle spectra of reference stars degraded at low resolution (R=1.000) have provided typical rms precisions of sigma_ T [eff]~150 K, sigma_logg~0.44, sigma_[Fe/H]~0

Table 23 (tables 2 & 3 of the paper) contains the derived stellar parameters, metallicities, and masses, for stars not known to harbor any planetary-mass companion. Table 4 contains the derived stellar parameters, metallicities, and masses, for extra-solar planet-host stars. (2 data files).

We present narrowband observations of the Hα emission in a sample of 31 satellites orbiting isolated giant spiral galaxies. The sample studied spans the range -19 mag

We have obtained projected rotation velocities (vrotsini) of a sample of 19 ultracool dwarfs with spectral types in the interval M6.5-T8 using high-resolution, near-infrared spectra obtained with NIRSPEC and the Keck II telescope. Among our targets there are two young brown dwarfs, two likely field stars, and 15 likely brown dwarfs (30-72 MJup) in

We present seeing measurements from Mt. Holomon (Chalkidiki, Greece), a possible site for the establishment of a new University of Thessaloniki Observatory, using the Hartman - DIMM method. After two years of systematic observations we present the first robust results and give a first evaluation of the astronomical seeing characteristics, which are