Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998pasj...50..349m&link_type=abstract
Publications of the Astronomical Society of Japan, v.50, p.349-357.
Astronomy and Astrophysics
Astronomy
Galaxies: Halo, Galaxies: Internal Motion, Galaxies: Spiral, Galaxies: Winds
Scientific paper
The interaction of a slowly rotating halo with an early galactic superwind is investigated. Two cases of the halo are assumed: a) rich in cold clouds, b) constituted by diffuse gas.\quad In the first case, the clouds evaporate due to the shock-wave and their matter is mixed with the wind to a uniform mixture.\quad In the second case, a cold shell is formed at large distance from the center. Fragmentation of this shell leads to the appearance of a stellar shell whereas the remaining clouds are free-falling to the center of the system. In both cases a strong redistribution of the mass is taking place which leads to angular momentum transfer from the outer to the inner regions.\quad By the same way the mass and angular momentum can be redistributed by quasi-stationary cooling flows with cloud formation.\quad Some applications of the above mechanisms to the structure of the disk of spiral galaxies are discussed.
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