F star
noun Astronomy.
a white to yellow star, as Canopus, Polaris, or Procyon, having a surface temperature between 6000 and 7500 K and an absorption spectrum in which the pair of ultraviolet lines of singly ionized calcium and the Balmer series of hydrogen are of about equal strength.
Compare spectral type.
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Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020