The Tully- Fisher relation exists between the galaxy's luminosity and its
A) size.
B) rotation.
C) age.
D) color.
E) mass.

Name: The Tully- Fisher relation exists between the galaxy's luminosity and its A) size. B) rotation. C) age. D) color. E) mass.
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Question

Quizplus · Accepted Answer

The Tully-Fisher relation is an empirical relationship between the luminosity of a spiral galaxy and its rotation speed. It suggests that galaxies with faster rotation speeds tend to be more luminous.

The Tully- Fisher Relation Exists Between the Galaxy's Luminosity and Its