If a star has an extrasolar planet, the wavelength of its radial velocity curve is related to the planet's

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Quizplus · Accepted Answer

The wavelength of a star's radial velocity curve is related to the planet's orbital period. This is because as a planet orbits a star, it causes the star to move slightly towards and away from Earth. This motion causes a shift in the star's spectral lines, which can be detected through radial velocity measurements. The period of this motion is directly related to the planet's orbital period, so by measuring the wavelength of the radial velocity curve, we can determine the orbital period of the planet.

If a Star Has an Extrasolar Planet, the Wavelength of Its