Abstract
The number of Large Magellanic Cloud clusters was measured with integrated UBV photometry by more than a factor of 4, now totaling 624 objects. A gap in the cluster distribution through the color-color diagram appears in the region of the equivalent SWB type IV. The amplitude of the gap is ∼0.1 mag in both colors. The turnoff ages of a few clusters near the gap edges perfectly fit theoretical predictions of a red giant branch phase transition. This color jump is due to the first appearance of stars suffering the helium flash, which form a bright and populous red giant branch that persists through the subsequent cluster evolution. As an additional result, evidence is found that Hodge 7 (SL 735) might be a classical globular cluster
Published Version
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