62 citations · 70 across the 4 of their papers we have counts for
5 papers
The Arecibo Galaxy Environment Survey XII : Optically dark HI clouds in the Leo I Group
Rhys Taylor, Joachim Koppen, Pavel Jachym +6
Using data from the Arecibo Galaxy Environment Survey, we report the discovery of five HI clouds in the Leo I group without detected optical counterparts. Three of the clouds are f…
IC4663: the first unambiguous [WN] Wolf-Rayet central star of a planetary nebula
Brent Miszalski, Paul A. Crowther, Orsola De Marco +4
Several [WC]-type central stars of planetary nebulae (PNe) are known to mimic the spectroscopic appearance of massive carbon-rich or WC-type Wolf-Rayet stars. In stark contrast, no…
Gas stripping in galaxy clusters: a new SPH simulation approach
P. Jachym, J. Palous, J. Koppen +1
The influence of a time-varying ram pressure on spiral galaxies in clusters is explored with a new simulation method based on the N-body SPH/tree code GADGET. We have adapted the c…
Stars and Planetary Nebulae in the Galactic Bulge
F. Cuisinier, J. Koppen, A. Acker +1
We compare the populations of Red Giant stars and Planetary Nebulae in the Galactic Bulge, in the light of recent determinations of their abundances patterns. We find both populati…
Condensation and Evaporation of Interstellar Clouds in Chemodynamical Models of Galaxies
J. K"oppen, Ch. Theis, G. Hensler
The network of interactions between hot gas, cool clouds, massive stars, and stellar remnants used in the chemodynamical modeling of the interstellar medium is investigated for the…