We simulate the characteristics of the Galactic population of radio and gamma-ray pulsars using Monte Carlo techniques. At birth, neutron stars are spatially distributed with supernova-kick velocities in the Galactic disk and randomly dispersed in age back to 109 years. They are evolved in the Galactic gravitational potential to the present time

An analysis of the optical flashes produced by Leonid meteoroids impacting the Moon in 1999 November is carried out in order to estimate the fraction of kinetic energy converted into radiation, the so-called luminous efficiency η. It is shown that the observational data are consistent with luminous efficiencies of 2×10-3 in the wavelength range of

We present the first part of the first large and homogeneous CCD color-magnitude diagram (CMD) data base, comprising 52 nearby Galactic globular clusters (GGC) imaged in the V and I bands using only two telescopes (one for each hemisphere). The observed clusters represent 75% of the known Galactic globulars with (m-M)V

Not Available

File table1.dat contains near-infrared JHK magnitudes of a sample of 18 Vega-like and post-T Tauri stars observed by the EXPORT collaboration. File table2.dat contains near-infrared JHK magnitudes of a sample of 4 pre-main sequence stars observed by EXPORT. The data were taken during four observing runs in the period May 1998 to January 1999. (3

IAUC 7506 available at Central Bureau for Astronomical Telegrams.