Formation of massive clouds and dwarf galaxies during tidal encounters

Details Formation of massive clouds and dwarf galaxies during tidal encounters Formation of massive clouds and dwarf galaxies during tidal encounters

Jan 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993egte.conf..238k&link_type=abstract

In NASA. Ames Research Center, The Evolution of Galaxies and Their Environment p 238-239 (SEE N93-26706 10-90)

Computer Science

1

Clouds, Dwarf Galaxies, H I Regions, Interacting Galaxies, Star Formation, Two Dimensional Models

Scientific paper

Gerola et al. (1983) propose that isolated dwarf galaxies can form during galaxy interactions. As evidence of this process, Mirabel et al. (1991) find 10(exp 9) solar mass clouds and star formation complexes at the outer ends of the tidal arms in the Antennae and Superantennae galaxies. We describe observations of HI clouds with mass greater than 10(exp 8) solar mass in the interacting galaxy pair IC 2163/NGC 2207. This pair is important because we believe it represents an early stage in the formation of giant clouds during an encounter. We use a gravitational instability model to explain why the observed clouds are so massive and discuss a two-dimensional N-body simulation of an encounter that produces giant clouds.

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