The hydrogen lines in spectral type A stars
A) are most narrow for supergiants.
B) are most narrow for main-sequence stars.
C) can not be used to estimate the luminosity of the star.
D) are very weak and difficult to see.
E) are useful in determining the apparent magnitude of the star.
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)
Q4: We know that giant stars are larger
Q5: The _ of a star is a
Q6: The star named Sheat is of M2
Q7: Compared with the spectral lines in the
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
Unlock this Answer For Free Now!
View this answer and more for free by performing one of the following actions
Scan the QR code to install the App and get 2 free unlocks
Unlock quizzes for free by uploading documents