
Concept explainers
Part a
To evaluate: The following prediction.
Type O stars have shorter lives than type G stars.
Part b
To evaluate: The following prediction.
Type K supergiant stars produce iron before they explode as supernovae.
Part c
To evaluate: The following prediction:
Type F stars become much more luminous near the ends of their lives than they were as main-sequence stars.
Part d
To evaluate: The following prediction:
Type O stars do not become more luminous near the ends of their lives but do become redder.
Part e
To evaluate: The following prediction:
Type M stars should have longer lives than type K stars.
Part f
To evaluate: The following prediction:
Stars similar to Sun reach a maximum size of about 100 solar radii during the red giant stage.
Part g
To evaluate: The following prediction:
Type K main sequence stars will become red giants when their cores run out of hydrogen.
Part h
To evaluate: The following prediction:
Some stars become white dwarfs at the ends of their lives.
Part i
To evaluate: The following prediction:
White dwarfs cool with time but do not change much in radius.

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Chapter 13 Solutions
The Essential Cosmic Perspective (8th Edition)
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