Wednesday Colloquium


"Properties of Milky Way globular clusters"

Janusz Kałużny (Copernicus Astronomical Centre, Warsaw)

General review of properties of Milky Way globular clusters will be followed by presentation of recent results based on HSTACS and ground based observations. Some new findings about extragalactic globular cluster will be also reported.


"Blue stragglers"

Michał Różyczka (Copernicus Astronomical Centre, Warsaw)

Old stellar clusters contain objects located above the turnoff point of the main sequence, which in their evolution seem to be "straggling" behind the remaining stars (they are "bluer" and seemingly younger). The talk is a review of observational properties of these object and theoretical problems they generate.