Super star clusters (M ecl > 105 M sun) are the largest stellar nurseries in our local Universe, containing hundreds of thousands to millions of young stars within a few light years. Many of these systems are found in external galaxies, especially in pairs of interacting galaxies, and in some dwarf galaxies, but relatively few in disk galaxies like

Context: NRAO 150, a compact and bright radio to mm source showing core/jet structure, has been recently identified as a quasar at redshift z = 1.52 through a near-IR spectral observation. Aims: To study the jet kinematics on the smallest accessible scales and to compute the first estimates of its basic physical properties. Methods: We have

IAUC 4516 available at Central Bureau for Astronomical Telegrams. IAUC 4516 available at Central Bureau for Astronomical Telegrams.

IAUC 4932 available at Central Bureau for Astronomical Telegrams. IAUC 4932 available at Central Bureau for Astronomical Telegrams.

IAUC 4930 available at Central Bureau for Astronomical Telegrams. IAUC 4930 available at Central Bureau for Astronomical Telegrams.

The stellar initial mass function (IMF) integrated over an entire galaxy is an integral over all separate star-formation events. Since most stars form in star clusters with different masses the integrated IMF becomes an integral of the (universal or invariant) canonical stellar IMF over the star-cluster mass function. This integrated IMF is steeper