The collision of clouds with the galactic disk

Details The collision of clouds with the galactic disk The collision of clouds with the galactic disk

Feb 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981a%26a....94..338t&link_type=abstract

Astronomy and Astrophysics, v.94, p.338.

Astronomy and Astrophysics

Astrophysics

105

Scientific paper

The gas-dynamical effects produced by the collision of low, intermediate, and/or high velocity clouds with a galactic disk are studied here. From an analytical formulation, confident limits are established for the various possible solutions (i.e. coalescence or re-expansion of the colliding components), and a test to see whether or not the collisions could lead to the formation of stars is also performed. The analytical limits and the various assumptions used are later confirmed and justified with the results obtained through a series of one-dimensional hydrodynamic numerical calculations.
The results shown here imply that the collisions of clouds with a galactic disk provide a large source of energy for the interstellar medium. Also, they are responsible for some large-scale structural peculiarities inside and outside galactic disks, e.g. giant rings, coronal gas, loop structures, giant H:: regions, etc.

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