Can the Doppler effect reveal the rotation speed of a star by the splitting of the spectral lines?
Audrey ArnoldActually more spreading than splitting and its not always measurable...
The Doppler effect of stellar rotation does, in fact, cause the absorption lines in the spectrum to spread; however, in larger stars, the effect of microturbulence may overpower this phenomenon.
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Indeed, rotational broadening—the splitting of spectral lines—allows the Doppler effect to determine a star's rotational speed.
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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
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