Thermal instability and the formation model of globular clusters from merging dwarf galaxies.

Details Thermal instability and the formation model of globular clusters from merging dwarf galaxies. Thermal instability and the formation model of globular clusters from merging dwarf galaxies.

Nov 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992sccha..35.1364m&link_type=abstract

Science in China, Series A, Vol. 35, No. 11, p. 1364 - 1373

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Scientific paper

A viable scenario for globular cluster formation is suggested in a cold dark matter model. In this scenario the smaller scale fluctuations superposed on a proto-galaxy will form proto-dwarf-galaxies. In their multi-phase ISM the warm clouds, which are thermally stable and gravitationally marginally stable with appropriate masses and metallicities, might be the proper progenitors of globular clusters. In the virialization of a proto-galaxy, these dwarf galaxies will acquire kinetic energy and collide with each other. As strong external disturbances, these collisions will cause a short timescale thermal instability, and further stimulate gravitational instability which is necessary for the transformation of progenitors into globular clusters.

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