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Remarks on Statistical Properties of the Turbulent Interstellar Medium
M. A. de Avillez, D. Breitschwerdt
The supernova-driven interstellar medium in star-forming galaxies has Reynolds numbers of the order of or even larger. We study, by means of adaptive mesh refinement hydro…
Dynamical Evolution of a Supernova Driven Turbulent Interstellar Medium
Dieter Breitschwerdt, Miguel A. de Avillez
It is shown that a number of key observations of the Galactic ISM can be understood, if it is treated as a highly compressible and turbulent medium energized predominantly by super…
About the evolution of Dwarf Spheroidal Galaxies
A. Marcolini, A. D'Ercole, F. Brighenti +1
We present 3D hydrodynamic simulations aimed at studying the dynamical and chemical evolution of the interstellar medium in dwarf spheroidal galaxies. This evolution is driven by t…
Technetium and the third dredge up in AGB stars II. Bulge stars
Stefan Uttenthaler, Josef Hron, Thomas Lebzelter +3
We searched for Technetium (Tc) in a sample of bright oxygen-rich asymptotic giant branch (AGB) stars located in the outer galactic bulge. Tc is an unstable element synthesised via…
Star Formation Regulation, Gas cycles and the Chemical Evolution of Dwarf Irregular Galaxies
S. Recchi, G. Hensler
Due to their low gravitational energies, dwarf galaxies are greatly exposed to energetical influences from internal and external sources. By means of chemodynamical models we show…
Early evolution of Tidal Dwarf Galaxies
S. Recchi, P. Kroupa, Ch. Theis +1
Our aim is to study the evolution of tidal dwarf galaxies. The first step is to understand whether a model galaxy without Dark Matter can sustain the feedback of the ongoing star f…
Boltzmann moment equation approach for the numerical study of anisotropic stellar disks
E. I. Vorobyov, Ch. Theis
We present the Boltzmann moment equation approach for the dynamics of stars (BEADS-2D), which is a finite-difference Eulerian numerical code designed for the modelling of anisotrop…
Dark matter density profiles: A comparison of nonextensive theory with N-body simulations
T. Kronberger, M. P. Leubner, E. van Kampen
Density profiles of simulated galaxy cluster-sized dark matter haloes are analysed in the context of a recently introduced nonextensive theory of dark matter and gas density distri…
Internal kinematics of modelled interacting disc galaxies
T. Kronberger, W. Kapferer, S. Schindler +3
We present an investigation of galaxy-galaxy interactions and their effects on the velocity fields of disc galaxies in combined N-body/hydrodynamic simulations, which include cooli…
Effervescent heating: constraints from nearby cooling flow clusters observed with XMM-Newton
Rocco Piffaretti, Jelle Kaastra
We have used deprojected radial density and temperature profiles of a sample of 16 nearby CF clusters observed with XMM-Newton to test whether the effervescent heating model can sa…