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Home Q & A Board Science-Related Homework Help Physics
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doit_the_clown doit_the_clown
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7 years ago
What is spectroscopic parallax?
A)   The apparent change in position of the absorption lines in a star's spectrum due to the Doppler shift caused by the Earth's motion around the Sun
B)   The apparent change in position of a nearby star compared to distant background stars due to the motion of the Earth around the Sun
C)   The 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)   The distance to a star measured using the spectral-luminosity class of the star and the inverse square law
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Discovering the Universe

Discovering the Universe


Edition: 7th
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Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.

Albert Einstein
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papachulopapachulo
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7 years ago
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doit_the_clown Author
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7 years ago
Good timing, thanks!
njn;l
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Yesterday
I appreciate what you did here, answered it right Smiling Face with Open Mouth
Hellish Lover
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2 hours ago
Thanks for your help!!
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