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physical object > natural object > celestial body > star > giant > heavy-metal star > S star > SC star

SC star comparison table

Subject	is a kind of	has definition
S star	heavy-metal star	Late type giant (K5 to M) showing distinct bands of ZrO.
SC star	S star	Star which appears to be intermediate in type between S stars and carbon stars (C/O ratio near unity).

Up: S star