On the origin of the Orion and Monoceros molecular cloud complexes

Details On the origin of the Orion and Monoceros molecular cloud complexes On the origin of the Orion and Monoceros molecular cloud complexes

Oct 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...333..826f&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 333, Oct. 15, 1988, p. 826-839. Research supported by the Max-Planck-Instit

Astronomy and Astrophysics

Astrophysics

80

H I Regions, Molecular Clouds, Orion Nebula, Galactic Rotation, Gravitational Fields, Hydrodynamics, Milky Way Galaxy

Scientific paper

A model for the origin of the Orion and Monoceros molecular cloud complexes, which are located more than 100 pc away from the galactic plane, is presented. The model is based on two-dimensional hydrodynamic simulations for the interaction if high-velocity clouds and the disk of the Galaxy. Cloud-galaxy collisions are able to generate massive shocked layers and self-gravity can then provide the conditions for the transformation of these layers into molecular clouds. The location and mass observed in the Orion and Monoceros molecular complexes can be explained by a collision of a high-velocity cloud with the galactic gaseous disk in the solar neighborhood. According to this model both complexes were formed some 6×107yr ago.

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