6 papers · 1 filter
Triaxial orbit based galaxy models with an application to the (apparent) decoupled core galaxy NGC 4365
R. C. E. van den Bosch, G. van de Ven, E. K. Verolme +2
We present a flexible and efficient method to construct triaxial dynamical models of galaxies with a central black hole, using Schwarzschild's orbital superposition approach. Our m…
The shape of the dark matter halo in the early-type galaxy NGC 2974
Anne-Marie Weijmans, Davor Krajnovic, Glenn van de Ven +3
We present HI observations of the elliptical galaxy NGC 2974, obtained with the Very Large Array. These observations reveal that the previously detected HI disc in this galaxy (Kim…
Dynamical modelling of stars and gas in NGC2974: determination of mass-to-light ratio, inclination and orbital structure by Schwarzschild's method
Davor Krajnovic, Michele Cappellari, Eric Emsellem +2
We study the large-scale stellar and gaseous kinematics of the E4 galaxy NGC2974, based on panoramic integral-field data obtained with SAURON. We quantify the velocity fields with…
Rain and clouds in brown dwarf atmospheres: A coupled problem from small to large
Ch. Helling, P. Woitke
The large scale structure of a brown dwarf atmosphere is determined by an interplay of convection, radiation, dust formation, and gravitational settling, which possibly provides an…
Improved Methods for Identifying Moving Groups
J. H. J. de Bruijne, R. Hoogerwerf, A. G. A. Brown +2
We present a new procedure for the identification of moving groups. It is a combination of two independent member selection methods. One is a modern implementation of a classical c…
New Results for Three Nearby OB Associations
R. Hoogerwerf, J. H. J. de Bruijne, A. G. A. Brown +3
We have developed a new procedure to identify moving groups, and have applied it to carry out a census of the nearby OB associations based on Hipparcos parallaxes and proper motion…