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Specific Frequency

From Harris, 1991.

- Support for dwarf formation of ancient globulars also seen in correlation between Hubble Type and Specific Frequency.

- Assuming hierarchical model of galaxy evolution, globulars are "stolen" through accumulation of smaller dwarfs.

- Observational support comes from merging of the Sagittarius dwarf spheroidal: 12.5% of MW's halo globulars appear to originate from accumulation of that galaxy.