Multiple Choice
What is the Tully-Fisher relation?
A) The more distant the galaxy,the fainter it appears.
B) The more distant the galaxy,the greater the recessional velocity.
C) The brighter the Cepheid,the longer the pulsation period.
D) The brighter the galaxy,the wider the 21-cm radio emission line.
Correct Answer:
Verified
Correct Answer:
Verified
Q1: The observational fact about a Cepheid variable
Q3: What percentage of the mass required by
Q4: Which of the following fundamental astronomical questions
Q5: The Tully-Fisher relation is mainly used for
Q6: In order for gravitational lensing of a
Q7: The rotation curve of a galaxy is
Q8: A preponderance of evidence suggests that an
Q9: What are the characteristics of quasars?
Q10: No known galaxy has its spectra lines
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