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Velocity Variations of Gliese 581
 

 

 

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Source page: http://commons.wikimedia.org/wiki/File:Velocity_Variations_of_Gliese_581.png

Summary

Description
English: Three-planet Keplerian model of the Gliese 581 radial-velocity variations. The panels display the phase-folded curve of each of the planets, with points representing the observed radial velocities, after removing the effect of the other planets. Top panel refers to the 15 Earth-mass planet orbiting close to the star (5-d period), the middle one is the 5 Earth-mass planet in the habitable zone and the lower panel shows evidence for a third, 8 Earth-mass planet with a period of 84 days. The error on one measurement is of the order of 1 m/s.
Date 4 September 2009(2009-09-04)
Source ESO
Author ESO

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