Zdenek Prudil finished his doctorate
Congratulations to our doctoral student Zdenek Prudil who just finished his doctorate!
Zdenek Prudil did his research under supervision of Hector Fellow Eva Grebel and worked on galactic archaeology with variable stars as tracers.
Galactic archaeology uses stars as fossils to understand galaxy evolution. Cosmological simulations suggest that galaxies are formed by swallowing of dwarf galaxies. In the project remnants of mergers are being examined, which provide evidence of the structure of the Milky Way.
Prudil’s project aimed at galactic archaeology using variable stars as tracers. These stars show a strictly periodic change of luminosity and are uniquely suited as tracers of distances, ages, and chemical compositions. In recent years, numerous sky surveys were carried out that identified and monitored large numbers of these variable stars.
Large photometric surveys, e.g., OGLE or Gaia, were exploited to search for remnants of past mergers that contributed to the build-up of the Milky Way and to explore their properties, and to characterize native Galactic stellar populations. The Gaia satellite, for the first time, provided a six-dimensional map of our galaxy with proper motions and radial velocities for millions of stars.
In combination with the ground-based time-domain surveys, these data allowed to study the assembly history of our galaxy in detail and also to explore surviving galactic building blocks, i.e., neighboring dwarf galaxies like the Large and Small Magellanic Clouds.
- Symposium 2021
Expeditions into the Unknown
8th July, 2021