Physics: Principles with Applications (7th Edition)

Published by Pearson
ISBN 10: 0-32162-592-7
ISBN 13: 978-0-32162-592-2

Chapter 33 - Astrophysics and Cosmology - Questions: 16


Their luminosities (a) can be used to determine distance (b).

Work Step by Step

As stated on page 957, Type Ia supernovae have approximately the same luminosities. You can see how bright one of these appears to be, and since you know its absolute luminosity, comparing the two tells you the distance to the supernova using equation 33-1.
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