Can I read The Fundamental Building Blocks of Galaxies on EtoBox?

The Fundamental Building Blocks of Galaxies by Kroupa, Pavel is a scholarly article available to read on EtoBox.

What is The Fundamental Building Blocks of Galaxies about?

Most stars form in compact, dense embedded clusters with memberships ranging from a dozen stars to many millions of stars. Embedded clusters containing more than a few hundred stars also contain O stars that disrupt the nebula abruptly. There are observational indications that the expulsion of gas from such clusters may occur within, or even quicker than, a stellar crossing-time scale. Because the star-formation efficiency is empirically deduced to be typically lower than 40 per cent, such clusters are left severely out of dynamical equilibrium with a super-virial velocity dispersion when they are exposed. As a consequence, they expand drastically. The velocity dispersion of expanding star-burst clusters may achieve values of a few tens km/s, which would have a significant impact on the stellar velocity distribution function and therefore the morphology of a galaxy. An application of these ideas to the vertical structure of the Milky Way (MW) disk suggests that such popping star clusters may constitute the missing heat source for understanding the age-velocity-dispersion relation. If the early MW disk experienced a vigorous epoch of star formation then perhaps even the thick disk m

Author

Kroupa, Pavel

Published

2004

Language

EN