Ignoring extinction effects, does a star's "color" (B-V) depend on its distance? Explain.

Ignoring extinction effects, does a star's "color"

(B-V) depend on its distance? Explain.

Expert Solution

The color of a star does not depend on its distance, because the fluxes through each filter are equally affected by distance. Astronomers often use a "color index" B-V, the difference in a star's apparent magnitude through a blue filter and a yellow ("visual") filter.The color of a star does not depend on its distance, because the fluxes through each filter are equally affected by distance. Astronomers often use a "color index" B-V, the difference in a star's apparent magnitude through a blue filter and a yellow ("visual") filter.

genius_generous answered 2 years ago

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