Can the Doppler effect reveal the rotation speed of a star by the splitting of the spectral lines?

1 Answer
Oct 30, 2017

Answer:

Actually more spreading than splitting and its not always measurable...

Explanation:

Stellar rotation does indeed cause the spreading of the absorption lines in the spectrum due to the Doppler effect, but note that it can be drowned out by the effect of microturbulence in larger stars.