Spectroscopic Parallax Is the

question 19

Multiple Choice

Spectroscopic parallax is the

• A) apparent change in position of the absorption lines in a star's spectrum due to the Doppler shift,caused by Earth's motion around the Sun.
• B) apparent change in position of a nearby star compared to distant background stars,due to the motion of Earth around the Sun.
• C) change in position of the absorption lines in a star's spectrum due to the Doppler shift,caused by the star's motion around the center of mass in a binary star system.
• D) distance to a star measured using the spectral luminosity class of the star and the inverse-square law.

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