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• 22:33, 5 May 2019 Johnno talk contribs uploaded File:Parenago-discontinuity.png (Velocity dispersion of 12,000 main-sequence stars versus colour. The abrupt change in slope at (B−V) = 0.6 is called Parenago’s discontinuity. From Binney, Dehnen & Bertelli (2000).)