File:ESO wobble.png

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English: The radial velocity method to detect exoplanet is based on the detection of variations in the velocity of the central star, due to the changing direction of the gravitational pull from an (unseen) exoplanet as it orbits the star. When the star moves towards us, its spectrum is blueshifted, while it is redshifted when it moves away from us. By regularly looking at the spectrum of a star - and so, measure its velocity - one can see if it moves periodically due to the influence of a companion.
Date
Source The Radial Velocity Method
Author ESO
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: The radial velocity method (artist’s impression).jpg
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current20:41, 8 September 2015Thumbnail for version as of 20:41, 8 September 20152,367 × 1,584 (704 KB)Rfassbind (talk | contribs){{Information |Description=The radial velocity method to detect exoplanet is based on the detection of variations in the velocity of the central star, due to the changing direction of the gravitational pull from an (unseen) exoplanet as it orbits the s...

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