Research on stars aims in general at understanding stellar evolution
and at determining the age of stars.
For that investigations of
star clusters
are carried out.
Among the types investigated especially are the
subdwarf stars
but also the general stellar population of the Milky Way halo.
Furthermore, Cepheids and Wolf-Rayet stars are investigated.
The Sternwarte is involved in the new German astrometric satellite project
DIVA.
Stars are born in dense interstellar gas clouds and
live through the long main-sequence stadium using hydrogen
burning as energy source.
They then evolve into many different star types.
The details of stellar evolution are basically set by
the initial mass of the star.
Research on stars is carried out predominantly at the
Sternwarte.
Measurements of stars and star clusters are also used to determine
their kinematics in order to investigate
Stars in nearby galaxies are of special interest, too
(see
star groups in the Magellanic Clouds
and
Bonn/Bochum Graduiertenkolleg
on Magellanic Clouds and other Dwarf Galaxies).
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