What makes white- dwarf supernovae very good standard candles for distance measurements?
A)They are very bright, so they can be used to determine the distances to galaxies billions of light- years away.
B)They should all have approximately the same luminosity.
C)We have had several occur close to us in the Milky Way, so we have been able to determine their luminosities very accurately.
D)They occur so frequently that we can use them to measure the distances to virtually all galaxies.
E)both A and B

Question

Quizplus · Accepted Answer

White-dwarf supernovae are excellent standard candles because they are both very bright, allowing them to be seen at vast distances, and they have a consistent luminosity, making it easier to calculate distances based on their observed brightness.

What Makes White- Dwarf Supernovae Very Good Standard Candles for Distance