Please I need help 1. In which type of galaxy would you expect to find the most
ID: 1836284 • Letter: P
Question
Please I need help
1. In which type of galaxy would you expect to find the most massive black hole: a dwarf irregular galaxy, a large spiral galaxy with a small bulge, or a large elliptical galaxy?(C)
A. A dwarf irregular galaxy has the smallest "bulge" of the three galaxies in the question, so it would be expected to have the largest massive black hole.
B. A large spiral galaxy with a small bulge has the smallest "bulge" of the three galaxies in the question, so it would be expected to have the largest massive black hole.
C. A large elliptical galaxy has the smallest "bulge" of the three galaxies in the question, so it would be expected to have the largest massive black hole.
D. A large elliptical galaxy has the largest "bulge" of the three galaxies in the question, so it would be expected to have the largest massive black hole.
E. A dwarf irregular galaxy is very different from the other two galaxies in the question, so it would be expected to have the largest massive black hole.
F. A large spiral galaxy with a small bulge is more difficult to see so it would be expected to have the largest massive black hole.
2. What evidence supports the existence of a black hole at the center of our galaxy? (C)
A. We observe an extremely bright X-ray source at the center of our galaxy.
B. We observe a large, dark object that absorbs all light at the center of our galaxy.
C. The motions of the gas and stars at the center indicate that it contains 4 million solar masses within a region only 3 light-years across
D. We can see gas falling into an accretion disk and past the event horizon of a black hole.
E. All of the above
Explanation / Answer
1)
A large elliptical galaxy has the smallest "bulge" of the three galaxies , so it would be expected to have the largest massive black hole
Correct option is C
2)
All the options given are evidences to prove the existence of black hole at the center of our galaxy.
correct option is E.