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astro-ph2001
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…
astro-ph2001
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…
astro-ph2001
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…