The Total Mass of the Pair of Stars in Spectroscopic

question 38

Multiple Choice

The total mass of the pair of stars in spectroscopic binaries are difficult to estimate because

• A)we can't measure the radial velocities of each star in the system.
• B)we can't see the shape or tilt of the orbit.
• C)we can't find the diameters of the stars.
• D)we can't determine the luminosities of the stars.
• E)the Doppler shift is not measurable.

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