The star named Circini has the spectral type and luminosity class of O 8.5 V. Based on this information, which of the following are true? 
A) I & II
B) II & IV
C) II, III, & IV
D) I, II, & III
E) I, II, III, & IV
Correct Answer:
Verified
Q1: In an H-R diagram, stars with the
Q3: The most common stars are
A)supergiants.
B)giants.
C)upper (more luminous)
Q3: Which of the following kind of stars
Q4: Diagram 8-1
Use the H-R diagram below to
Q7: Parallax would be easier to measure if
A)
Q8: A star's luminosity depends only on the
Q11: In a binary system, the more massive
Q12: Diagram 8-1
Use the H-R diagram below to
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