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Donaldistische Publikationen
Main Research Areas
- Astrometry (Gaia)
- Stellar Atmospheres
- Late Stages of Stellar Evolution
- White Dwarfs
- Magnetic Fields in White Dwarfs
- Atoms and Molecules in Strong Magnetic Fields
- Chemical Abundances in White Dwarfs
- X-ray Emission from White Dwarfs
- Surveys for Hot Stars
- Evolutionary Strategies and Genetic Algorithms
Specific Projects and Contributions
I have worked in particular on:
- Outreach activities for the Gaia mission
- Visualization of Gaia data
- Data access systems for Gaia
- First Look for the Gaia mission
- One-Day Astrometric Solution (ODAS)
- First Look and Science Quick Look for the DIVA astrometry mission
- Onboard software for the DIVA satellite
- Polarized radiative transfer in magnetized stellar atmospheres
- Probing gravitational theories using polarization measurements
- Search for weak magnetic fields in white dwarfs, sdB stars, and central stars of planetary nebulae
- Interpretation of spectra and polarization of magnetic white dwarfs
- Zeeman tomography of magnetic white dwarfs using evolutionary strategies and genetic algorithms
- Consistent interpretation of the Zeeman and cyclotron spectra of AM Herculis stars
- Search for rapidly rotating magnetic white dwarfs
- Testing calculations for atoms and molecules in strong magnetic fields
- Interpretation of EUV and X-ray observations of white dwarfs
- Chemical abundance analyses of white dwarfs
- Chemically stratified atmospheres of white dwarfs
- Search for faint blue stars in the Hamburg Quasar Survey, Hamburg/ESO Survey, and Sloan Digital Sky Survey
- Hydrodynamical simulations of convection in white dwarf atmospheres
- Stellar dynamical investigation of white dwarfs in the proposed Hyades supercluster
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