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CH star
A type of carbon star in which the molecular bands of CH are very strong. CH stars are also typically high-velocity Population II objects found in the galactic halo and in globular clusters. They were first identified as a distinct group by Philip Keenan (1908-) in 1942, a year after he and William Morgan developed their unified carbon star classification scheme (see Morgan-Keenan classification).
Related category
• TYPES OF STAR
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