4 papers · 1 filter
Near IR photometry of the old open clusters Berkeley 17 and Berkeley 18. Probing the age of the galactic disc
Giovanni Carraro, Antonella Vallenari, Leo Girardi +1
We report on near IR ( and bands) observations of two regions centered on the old open clusters Berkeley~17 and Berkeley~18, for which only optic…
Bright Stars and Metallicity Spread in the Globular Cluster Omega Centauri
Sergio Ortolani, Stefano Covino, Giovanni Carraro
The globular cluster Omega Centauri (NGC 5139) is the most massive and brightest cluster in our Galaxy. It has also a moderately high mass to light ratio (3.6) and an anomalous fla…
Comparison of two different extinction laws with Hipparcos observations
Bing Chen, Jean Luc Vergely, Bernard Valette +1
Interstellar absorption in the galactic plane is highly variable from one direction to another. In this paper colour excesses and distances from a new open cluster sample are used…
A new parallel TreeSPH code
Cesario Lia, Giovanni Carraro, Cesare Chiosi +1
In this report we describe a parallel implementation of a Tree-SPH code realized using the SHMEM libraries in the Cray T3E supercomputer at CINECA. We show the result of a 3D test…