Pavel Kroupa

TL;DR: In this paper, the uncertainty inherent in any observational estimate of the IMF is investigated by studying the scatter introduced by Poisson noise and the dynamical evolution of star clusters, and it is found that this apparent scatter reproduces quite well the observed scatter in power-law index determinations, thus defining the fundamental limit within which any true variation becomes undetectable.

TL;DR: Combining IMF estimates for different populations in which the stars can be observed individually unveils an extraordinary uniformity of the IMF, which appears to hold for populations including present-day star formation in small molecular clouds.

TL;DR: In this paper, the authors quantify the complex interdependence of stellar binarity, the stellar mass-luminosity relation, the mass function, the colour-magnitude relation and the Galactic disc structure, all of which must be understood when analysing star-count data and stellar luminosity functions.

TL;DR: The authors showed that the galactic-field initial mass function for early-type stars cannot, under any circumstances, be a Salpeter power law, but that they must have a steeper exponent,?field 2.8.

TL;DR: In this paper, direct N-body calculations are presented of the formation of Galactic clusters using GasEx, which is a variant of the code Nbody6, focusing on the possible evolution of the Orion Nebula Cluster (ONC) by assuming that the embedded OB stars explosively drove out 2/3 of its mass in the form of gas about 0.4 Myr ago.