Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990pasj...42..505f&link_type=abstract
Astronomical Society of Japan, Publications (ISSN 0004-6264), vol. 42, no. 4, 1990, p. 505-516. Research supported by MOESC.
Astronomy and Astrophysics
Astronomy
16
Carbon Monoxide, Globular Clusters, Interstellar Gas, Magellanic Clouds, Abundance, Metallicity, Molecular Clouds, Star Formation
Scientific paper
Highly asymmetric distributions of H I and CO gases in LMC (Large Magellanic Cloud) are reproduced by taking into account hydrodynamical collision between LMC and SMC (Small Magellanic Cloud) 0.15 to 0.2 Gyr ago. Two-valued rotation curves in H I gas are due, respectively, to gas clouds accelerated by collision and to those escaped therefrom. It is also concluded that a large-scale noncircular motion of greater than 50 to 100 km/s and a resultant compression of greater than 10,000 solar masses in mass-scale are necessary conditions for globular cluster formation from interstellar gas. This process seems to be independent of the chemical abundance of heavy elements in the range Fe/H between -2 and 0.
Fujimoto Mitsuaki
Noguchi Masafumi
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