Whether the stellar initial mass function (IMF) is universal or is instead sensitive to
environmental conditions is of critical importance: The IMF influences most observable …

A universal initial mass function (IMF) is not intuitive, but so far no convincing evidence for a
variable IMF exists. The detection of systematic variations of the IMF with star-forming …

The distribution of stellar masses that form in one star formation event in a given volume of
space is called the initial mass function (IMF). The IMF has been estimated from low-mass …

Observations indicate that massive stars in the Galaxy form in regions of very high surface
density, Σ∼ 1 g cm-2. Clusters containing massive stars and globular clusters have a …

The current knowledge on the stellar IMF is documented. It is usually described as being
invariant, but evidence to the contrary has emerged: it appears to become top-heavy when …

We present new observations of the nuclear star cluster in the central parsec of the Galaxy
with the adaptive optics assisted, integral field spectrograph SINFONI on the ESO/VLT. Our …

We conjecture that brown dwarfs are substellar objects because they have been ejected
from small newborn multiple systems that have decayed in dynamical interactions. In this …

We present an analysis of J, H, and K s time-series photometry obtained with the southern
2MASS telescope over a 0 &fdg; 84× 6 region centered near the Trapezium region of the …

We use the results of a new multiepoch, multiwavelength, near-infrared census of the
Trapezium cluster in Orion to construct and analyze the structure of its infrared (K-band) …

We present the results of a 0 &farcs; 5–0 &farcs; 9 FWHM imaging survey at K (2.2 μ m) and
H (1.6 μ m) covering∼ 5 &farcm; 1× 5 &farcm; 1 centered on &thetas; 1 C Ori, the most …