Statistics – Computation
Scientific paper
Mar 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...387..152j&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 387, March 1, 1992, p. 152-161.
Statistics
Computation
122
Interacting Galaxies, Molecular Clouds, Spiral Galaxies, Star Formation, Starburst Galaxies, Computational Astrophysics, Interstellar Gas, Massive Stars, Star Formation Rate
Scientific paper
A physical mechanism is proposed for explaining the origin of the intense burst of massive-star formation seen in colliding/merging, gas-rich, field spiral galaxies. The different parameters for the two main mass components, H2 and HI, of the interstellar medium within a galaxy are taken into account, and their consequent different evolution during a collision between two galaxies is followed. It is shown that the massive-star formation created by the Giant Molecular Clouds (GMCs) is increased following a collision between galaxies. During a typical collision between two field spiral galaxies, the H I clouds from the two galaxies undergo collisions at a relative velocity of about 300 km/s. GMCs, with their smaller volume-filling factor, do not collide.
Jog Chanda J.
Solomon Philip M.
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