Does the Earth's Rotation affect the Spectral Lines of Stars?

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Does the Earth's Rotation affect the Spectral Lines of Stars?

2007-09-23 16:54:48 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Astronomy & Space

2 answers

Yes. Spectroscopes will show a doppler shift as Earth rotates toward or away from the star. Since this is a predictable motion, it can easily be corrected for. The spectroscopes used for exoplanet searches can detect much smaller velocities than that.

2007-09-23 18:04:21 · answer #1 · answered by injanier 7 · 0⤊ 0⤋

Injanier answered your question quite accurately.

2007-09-24 11:59:19 · answer #2 · answered by Billy Butthead 7 · 0⤊ 0⤋