Multiple Choice
Over what distance does the Cepheid variable technique work? The faintest objects that can be photographed through the best telescopes have apparent magnitudes of about m = 30. Consider a bright Cepheid with an absolute magnitude of M = -2.4. At what distance could it just be seen?
A) 30 pc
B) 30 kpc
C) 30 Mpc
D) 30 Gpc
Correct Answer:
Verified
Correct Answer:
Verified
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