An irregular galaxy contains mostly
A) lower-main-sequence stars and giants.
B) upper-main-sequence stars and giants.
C) upper-main-sequence stars and gas and dust.
D) upper- and lower-main-sequence stars and gas and dust.
E) white dwarfs and supergiants.
Correct Answer:
Verified
Q7: Mathematical models indicate that _ galaxies are
Q10: A _ generally contains well over 1000
Q11: Most of the mass of a galaxy
Q13: The cluster method (motions of galaxies in
Q14: A spiral (S or SB) galaxy contains
A)
Q17: A mega-parsec (Mpc) is equivalent to
A)3.26 light-years.
B)206,265
Q17: An elliptical (E) galaxy contains
A) mostly lower-main-sequence
Q18: The mass of a single galaxy might
Q19: Which of the following is not used
Q21: What factors are important when trying to
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