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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 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.
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Source European Southern Observatory
Author European Southern Observatory
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This file, which was originally posted to European Southern Observatory, was reviewed on 13 May 2020 by reviewer Acagastya, who confirmed that it was available there under the stated license on that date.

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Date/TimeThumbnailDimensionsUserComment
current02:35, 13 May 2020Thumbnail for version as of 02:35, 13 May 20202,374 × 1,773 (339 KB)Acagastyaessentially croppping
19:32, 9 November 2008Thumbnail for version as of 19:32, 9 November 20082,374 × 2,094 (1.04 MB)ComputerHotline{{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 star

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