Disk Survival in the Extremely Massive Association Cygnus OB2
Star formation in massive clusters proceeds under the influence of the intense ionizing flux emitted by OB stars. Among the massive star forming regions in our...
Disk tomography and dynamics: a time-dependent study of known mid-infrared variable young stellar objects
Most of our knowledge on young stars comes from snapshot observations: spectra and images taken at a single epoch, or at different epochs at different...
Disky Nuclei in Early- to Intermediate-type Disk Galaxies
Structural analysis of S0-Sbc galaxies imaged with HST at near-infrared wavelengths shows many nuclei to be flattened systems with surface brightness comparable...
Chemical abundance data for the Galaxy show a wide dispersion. We try to check if this dispersion may also be found with chemical evolution models as an effect...
Dissecting the Accretion Environments of X-ray Binaries with High Speed Coordinated Optical and X-ray Timing Observations
We are uncovering significant optical variability in low/hard state observations of several X-ray binaries on the fastest time-scales of just tens of...
Dissecting the Large Magellanic Cloud: a high spatial resolution map of its star formation history
Detailed studies of nearby Local Group galaxies offer an unique window to understanding galaxy formation and evolution. The analysis of Colour-Magnitude...
Distance determination to PNe using the extinction-distance method
We present individual distances to three PNe: NGC 6537, NGC 6781 and NGC 7027, determined by the extinction-distance method. These objects are part of a larger...