Compared with the spectral lines in the solar spectrum, lines in a supergiant star's spectrum are
A) more narrow.
B) broader.
C) weaker.
D) stronger.
E) broader and weaker.
Correct Answer:
Verified
Q2: The hydrogen lines in spectral type A
Q3: The most common stars are
A)supergiants.
B)giants.
C)upper (more luminous)
Q4: We know that giant stars are larger
Q5: The _ of a star is a
Q6: The star named Sheat is of M2
Q8: A star's luminosity depends only on the
Q9: The total mass of the pair of
Q10: The star named Circini has the spectral
Q11: In a binary system, the more massive
Q12: Absolute visual magnitude is
A)the apparent magnitude of
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