A. Spagna

Kinematics and stellar content of the Milky Way populations toward the North Galactic Pole

Aims. The formation and evolution of galaxies is one of the forefront problems of Astrophysics. Detailed studies of our own Galaxy are the first step to understand these complex processes. In this paper we discuss the stellar populations and kinematics toward the North Galactic Pole (NGP) using data taken from the Guide Star Catalog II. Methods. The Padova Galaxy model has been upgraded including the possibility of simulating in a consistent way color magnitude diagrams, luminosity functions and proper motions. Particular care is paid to simulate the kinematics of the thin disk, using a velocity dispersion tensor with off-diagonal term accounting for the vertical tilt. Results. To reproduce the observational color distribution of the studied fields, one of the most critical parameters is the IMF slope. The canonical Kroupa IMF gives a poor fit of the data. The most convincing solutions are obtained assuming that about

The Gaia-ESO Survey: Stellar content and elemental abundances in the massive cluster NGC 6705

40\%

Evidence of a thick disk rotation-metallicity correlation

of the stars are in binaries and that the initial mass function changes slope at 0.8

Detection and measurement of planetary systems with GAIA

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The Torino Observatory Parallax Program: White dwarf candidates

instead than at the canonical value of 0.5

ABSOLUTE PROPER MOTIONS OUTSIDE the PLANE (APOP) - A STEP TOWARD the GSC2.4

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The thick disk rotation-metallicity correlation as a fossil of an “inverse chemical gradient” in the early Galaxy

. We derive a Thin Disk IMF slope of

Model atmosphere analysis of the extreme DQ white dwarf GSC2U J131147.2+292348

\alpha = 0.9 \pm 0.2

Disk or halo white dwarfs? Kinematic analysis of high proper motion surveys

in the mass range 0.2-0.8

The kinematic signature of the Galactic warp in Gaia DR1 : I. the H ipparcos subsample

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