Journal
ASTROPHYSICAL JOURNAL LETTERS
Volume 672, Issue 2, Pages L111-L114Publisher
IOP Publishing Ltd
DOI: 10.1086/527033
Keywords
globular clusters : general
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The globular cluster system of a typical spheroidal galaxy makes up about 0.25% of the total galaxy mass. This is roughly the same mass fraction as contained in the nuclear star cluster (or stellar nucleus) present in most nearby low-mass galaxies. Motivated by this coincidence, this Letter discusses a scenario in which globular clusters of presentday galaxies are the surviving nuclei of the dwarf galaxies that - according to the hierarchical merging paradigm of galaxy formation - constitute the building blocks of present-day massive galaxies. This scenario, which was first suggested by Freeman, has become more attractive recently in light of studies that demonstrate a complex star formation history in a number of massive globular clusters.
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