Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...219..105v&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 219, no. 1-2, July 1989, p. 105-120.
Astronomy and Astrophysics
Astrophysics
32
Early Stars, Interstellar Gas, Star Clusters, Star Formation, Stellar Mass Ejection, Astronomical Models, Cosmic Gases, Open Clusters, Stellar Structure, Virial Theorem
Scientific paper
In the present general analytical treatment of the dynamical effect of rapid gas removal fron a young star-forming region, where said removal is effected by the newly formed stars, the incorporation of deviations from virial equilibrium (VE) during mass loss and of allowances for structural and kinematical differences between stellar and gaseous components prior to gas removal is noted to exert a significant influence on the critical star formation efficiency (SFE) and on the expansion factor and velocity dispersion of the emergent star cluster. During mass loss, the system is allowed to oscillate around VE; unbound systems may result, and a range in critical SFEs exists which corresponds to different initial conditions of the oscillation.
David Marc
Verschueren W.
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