5 papers
The fragmentation of expanding shells: cloud formation rates and masses
J. Palous, R. Wunsch, S. Ehlerova
The gravitational instability of expanding shells is discussed. Linear and nonlinear terms are included in an analytical solution in the static and homogeneous medium. We discuss t…
Gravitational instability of expanding shells: Solution with nonlinear terms
R. Wunsch, J. Palous
A model of the thin shell expanding into a uniform ambient medium is developed. Density perturbations are described using equations with linear and quadratic terms, and the linear…
Triggered Star Formation
J. Palous, S. Ehlerova
The star formation triggered in dense walls of expanding shells will be discussed. The fragmentation process is studied using the linear and non-linear perturbation theory. The inf…
Star formation in expanding shells
S. Ehlerova, J. Palous
We discuss the induced star formation in dense walls of expanding shells. The fragmentation process is studied using the linear perturbation theory. The influence of the energy inp…
Fragmentation of Expanding Shells in Spiral and Irregular Galaxies
S. Ehlerova, J. Palous, Ch. Theis +1
Conditions for the fragmentation of expanding shells due to gravitational instability are discussed. The self-similar analytical solution is compared with the results of 3-dimensio…