Multiple Choice
Why is the Tully-Fisher relation NOT used for elliptical galaxies?
A) Ellipticals do not emit 21-cm radiation.
B) The luminosity of an elliptical is not related to its mass.
C) The luminosity of an elliptical is not related to its age.
D) Ellipticals do not rotate.
Correct Answer:
Verified
Correct Answer:
Verified
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