Which of the following cannot be determined from the spectrum of a star
A)chemical composition
B)surface temperature
C)radial (along line of sight) velocity
D)tangential (perpendicular to line of sight) velocity
E)radial (along line of sight) Velocity

Question

Quizplus · Accepted Answer

The tangential velocity (perpendicular to the line of sight) cannot be determined from the spectrum of a star. The spectrum can provide information about the chemical composition, surface temperature, and both radial and proper motion velocities.

Which of the Following Cannot Be Determined from the Spectrum