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A catalog of 677 galaxy cluster candidates selected via the Sunyaev-Zel'dovich (SZ) effect signature from 2500 square degrees of South Pole Telescope (SPT) data, completed in 2011. The sample includes 415 clusters first identified by SPT, with 251 new discoveries, and has a median redshift of 0.55 and a median mass of approximately 3.5x10^14 solar masses. The data was aggregated by NASA's HEASARC and last updated in March 2026.
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