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Prog. Theor. Phys. Vol. 42 No. 1 (1969) pp. 9-23

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Formation of Gravitationally Bound Primordial Gas Clouds

Kenji Tomita

Research Institute for Theoretical Physics, Hiroshima University, Takehara, Hiroshima-ken

(Received January 29, 1969)

Abstract:

The formation of gravitationally bound systems from primordial gas is studied by means of Tolman's solution for dust-like matter. The critical values of density contrast and its growth rate at an initial epoch are derived, which are necessary for an inhomogeneity to condense into a bound system before the appearance of the oldest stars. The matter distributions in an isolated inhomogeneity and an inhomogeneity included in a larger one (which will be a cluster of gas clouds) are followed with time by assuming simple models for inhomogeneities, and it is shown how the bound region spreads outwards. Moreover, the minimum mass of fragments into which the gas clouds may break up is examined.


URL : http://ptp.ipap.jp/link?PTP/42/9/
DOI : 10.1143/PTP.42.9

[ Full Text PDF : FREE ACCESS (907K) ] Citation:


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Citing Article(s) :

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  2. Progress of Theoretical Physics Vol. 42 No. 4 (1969) pp. 978-979 :
    Formation of Gravitationally Bound Primordial Gas Clouds. II
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  3. Progress of Theoretical Physics Vol. 43 No. 6 (1970) pp. 1511-1525 :
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  5. Progress of Theoretical Physics Vol. 45 No. 6 (1971) pp. 1747-1762 :
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  6. Progress of Theoretical Physics Vol. 47 No. 1 (1972) pp. 105-117 :
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  9. Progress of Theoretical Physics Vol. 66 No. 2 (1981) pp. 508-525 :
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  10. Progress of Theoretical Physics Vol. 67 No. 4 (1982) pp. 1093-1106 :
    Galaxy Formation in the Neutrino Dominated Universe
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  11. Progress of Theoretical Physics Vol. 70 No. 3 (1983) pp. 772-782 :
    Expansion of a Thin Shell around a Void in Expanding Universe
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