Disentangling the stellar components of the metal-poor Milky Way
Some studies of the Milky Way halo and all studies of the thick disk populations suffer from difficulties cleanly separating out one galactic component from...
Disentangling the Stellar Populations of Fornax Dwarf Spheroidal
We studied the stellar populations of Fornax dwarf spheroidal galaxy using HST/WFPC2 imaging of 7 galaxy fields. Our observations reach the oldest main-sequence...
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...