Multiple Choice
The orbits of a few dozen stars have been carefully monitored over a few decades in the proximity of the supermassive black hole at the center of the Milky Way (see the figure shown below) .One example is the so-called star SO-1, whose semimajor axis is 3,300 AU long and has a period of 94.1 years.What is the estimated mass of the central supermassive black hole?
A) 3.4 *106 MSUN
B) 7.6 * 109 MSUN
C) 1.5 * 108 MSUN
D) 4.0 * 106 MSUN
E) 3.4* 1011 MSUN
Correct Answer:

Verified
Correct Answer:
Verified
Q1: If the Large Magellanic Cloud is orbiting
Q3: What are the main observational difficulties in
Q4: The Milky Way and Andromeda are on
Q5: Spiral arms are generated by<br>A) bipolar jets
Q6: Which of the following is evidence that
Q7: Because of the ages of globular clusters
Q8: As technology is advancing, scientists find more
Q9: Outline the major differences between the thin
Q10: What is ripping apart the Sagittarius dwarf
Q11: On average, we expect that _ stars