Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980a%26a....83..118r&link_type=abstract
Astronomy and Astrophysics, vol. 83, no. 1-2, Mar. 1980, p. 118-128.
Astronomy and Astrophysics
Astrophysics
26
Fragmentation, Harmonic Analysis, Hydrodynamics, Interstellar Matter, Protostars, Astronomical Models, Legendre Functions, Perturbation Theory, Spherical Harmonics, Stellar Evolution
Scientific paper
A new numerical method for three-dimensional protostellar hydrodynamics is presented. Its compatibility with existing numerical codes is demonstrated by test calculations in two dimensions (axial symmetry). Shortcomings and advantages of the method are discussed. The compactness of the present code is emphasized: many interesting three-dimensional calculations can be performed on a medium-size computer (300 K bytes of central storage). Several tests of the stability of rotating interstellar clouds against non-axisymmetric perturbations are reported. In three cases fragmentation leading to the formation of a binary system is observed. Some general conclusions concerning the stability of rotating clouds are drawn.
Rozyczka Michal
Tscharnuter Werner M.
Winkler K.-H.
Yorke Harold W.
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