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Abstract: NGC 3311, the giant cD galaxy in the Hydra cluster A1060, has one of thelargest globular cluster systems known. We describe new Gemini GMOS g-,i-photometry of the NGC 3311 field which reveals that the red, metal-rich side ofits globular cluster population extends smoothly upward into the mass rangeassociated with the new class of Ultra-Compact Dwarfs UCDs. We identify 29UCD candidates with estimated masses > 6x10^6 solar masses and discuss theircharacteristics. This UCD-like sequence is the most well defined one yet seen,and reinforces current ideas that the high-mass end of the globular clustersequence merges continuously into the UCD sequence, which connects in turn tothe E galaxy structural sequence.

Author: Elizabeth Wehner, William Harris

Source: https://arxiv.org/


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