Abstract
view Abstract Citations (15) References (8) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS On the possibility of star formation behind interstellar shocks Welter, G. ; Schmid-Burgk, J. Abstract The possibility of star formation in a curved self-gravitating gas layer formed behind an interstellar shock is considered. Following a brief review of the results obtained by Elmegreen and Elmegreen (1978) for the case of a plane-parallel gas layer of infinite extent, which resulted in conditions for star formation, attention is given to the stability of a pressure-bounded, cylindrical sheath of self-gravitating gas, extending to infinity along the cylinder axis. Analysis of perturbations around the hydrostatic equilibrium of such a gas reveals the presence of self-made Rayleigh-Taylor instabilities which give rise to the growth of perturbations at all wavelengths, with the smallest modes growing fastest. The instabilities would then act to break the layer into fragments too small to collapse further, despite the influences of viscosity within the gas layer or strong radiation pressure from a central object. Publication: The Astrophysical Journal Pub Date: May 1981 DOI: 10.1086/158870 Bibcode: 1981ApJ...245..927W Keywords: Gravitational Effects; Interstellar Gas; Perturbation Theory; Shock Waves; Star Formation; Cylindrical Shells; Hydrostatics; Protostars; Radiation Pressure; Taylor Instability; Viscosity; Astrophysics full text sources ADS |
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