A Cepheid variable is a
A) type of eclipsing binary star.
B) high-mass giant or supergiant star that pulsates regularly in size and brightness.
C) low-mass red giant that varies in size and brightness in an irregular way.
D) variable emission nebula near a T Tauri star.
Correct Answer:
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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
Q278: What are the stars in the lower
Q279: Cepheid stars are
A) giant stars that pulsate
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)
Q284: What would one expect to find in
Q285: How do the stars in a star
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