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.

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Example Sentences

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“If it is circumstellar, we have to understand why a boring F star is doing this and how common it is,” Sigurdsson says.

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They had spotted something bigger than a planet orbiting an F star, but it wasn't round.

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This seemed to be confirmed a few months later when another oblong shell passed across the F star, this time in an orbit farther out than the first, and at a 40° angle to the first orbital plane.

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FSR f-stop

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