No CrossRef data available.
Article contents
Star Formation Driven by Thermal-Chemical Instability in a Pre-Galactic Gas Cloud
Published online by Cambridge University Press: 04 August 2017
Extract
The hydrogen molecule would work as an efficient coolant in a pre-galactic medium which is free from heavy elements. It is shown by linear perturbation analysis that molecular reactions lead to a thermal instability of condensation mode (Sabano and Yoshii 1977, Yoshii and Sabano 1979, Silk 1983). In the present paper we study the nonlinear growth of perturbations by a one-dimensional simulation of gas dynamics, which includes molecular reactions as well as an energy equation. We numerically follow the time-evolution of a spherically symmetric perturbation, which is superposed on initially uniform medium under free-fall contraction, by a Lagrangian hydrodynamical programme with an artificial viscosity (Richtmyer and Morton 1967).
- Type
- I. Star Forming Processes in the Solar Neighborhood
- Information
- Symposium - International Astronomical Union , Volume 115: Star Forming Regions , 1987 , pp. 446 - 448
- Copyright
- Copyright © Reidel 1987