Globular clusters and galaxy mergers

Astronomy and Astrophysics – Astronomy

Scientific paper

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Dwarf Galaxies, Galactic Clusters, Galactic Structure, Globular Clusters, Disk Galaxies, Elliptical Galaxies, Galactic Evolution, Spiral Galaxies

Scientific paper

The specific cluster frequency in galaxies of type Sb is found to be an order of magnitude lower than that in ellipticals. This observation shows that typical E galaxies cannot have formed by mergers of spirals. Presently available observations suggest, but do not yet prove, that the spheroidal-bulge components of spiral galaxies have a lower specific globular-cluster frequency than do typical elliptical galaxies. Arguments are given which militate against the suggestion that spirals were formed from the merger of ancestral dwarf galaxies.

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