What are the stars in the lower part of the instability strip called?
A) T Tauri stars
B) protostars
C) Cepheid variables
D) RR Lyrae variables
Correct Answer:
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Q273: What is the difference between a
Q274: What characteristic of Cepheid variables makes them
Q275: What scientific method is used to observe
Q276: Suppose a Cepheid oscillates from an initial
Q277: What is a Cepheid variable star?
A) one
Q279: Cepheid stars are
A) giant stars that pulsate
Q280: A Cepheid variable is a
A) type of
Q281: Which of these statements about a globular
Q282: The period of variability of a Cepheid
Q283: Where do horizontal-branch stars get their energy?
A)
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