4 papers
Search for Southern-Hemisphere Giant Radio Galaxies with SALT
J. Machalski, S Zola, D. Koziel +1
An extensive search for distant Giant radio galaxies on the southern hemisphere is justified. We emphasize the crucial role of optical spectroscopy in determination of their basic…
Effects of galaxy mergers on the faint IRAS source counts and the background
Yiping Wang, Peter L. Biermann
Binary merging constitutes a complementary mode of galaxy evolution to the canonical hierarchical clustering theory. This merger-driven evolution not only influences the galaxy mas…
The evolution of helium white dwarfs: II. Thermal instabilities
T. Driebe, T. Bloecker, D. Schoenberner +1
We calculated a grid of evolutionary models for white dwarfs with helium cores (He-WDs) and investigated the occurrence of hydrogen-shell flashes due to unstable hydrogen burning v…
Kinematics of the anemic cluster galaxy NGC 4548 - Is stripping still active ?
B. Vollmer, V. Cayatte, A. Boselli +2
We present new HI (20" resolution) and CO observations of NGC 4548, an anemic galaxy in the Virgo cluster. The atomic gas distribution shows a ring structure which is distorted at…