Which of the following terms is given to a pair of stars that we can determine are orbiting each other only by measuring their periodic Doppler shifts?
A. eclipsing binary
B. spectroscopic binary
C. visual binary
D. double star
Answer:B
Which of the following terms is given to a pair of stars that we can determine are orbiting each other only by measuring their periodic Doppler shifts?
A. eclipsing binary B. spectroscopic binary C. visual binary D. double star