Abstract
We have investigated that stability and hydrodynamics of a primordial cloud embedded in a external pressure. Whitworth (1981) and Tohline et al. (1987) discussed the role of cooling in the formation of clouds, assuming the spherical symmetry and polytropic equation of state. They pointed out that mildly nonlinear disturbances in cooling medium can collapse the cloud which has initially the sub-Jeans mass. We have performed hydrodynamical simulations, taking account into H2 cooling and chemical evolution, and examined whether the cloud which has the sub-Jeans mass can collapse in the primordial gas by mild fluctuation.
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References
Whitworth, A. (1981) Global gravitational stability for one-dimensional polytropes., M.N.R.A.S., 195, pp. 967–977
Tohline, J.E., Bodenheimer, P.H. and Christodoulou, D.M. (1987) The crucial role of cooling in the making of molecular clouds and stars., ApJ, 322, pp. 787–794
Palla, F., Salpeter, E.E. and Stahler, S.W. (1983) Primordial star formation: the role of molecular hydrogen., ApJ, 271, pp. 632–641
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© 1999 Springer Science+Business Media Dordrecht
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Oosato, T., Yoshida, T. (1999). Primordial Gas Collapsing with H2 Cooling. In: Miyama, S.M., Tomisaka, K., Hanawa, T. (eds) Numerical Astrophysics. Astrophysics and Space Science Library, vol 240. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-4780-4_14
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DOI: https://doi.org/10.1007/978-94-011-4780-4_14
Publisher Name: Springer, Dordrecht
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