Velocity variations of Gliese 581
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.
Crédit:ESO
À propos de l'image
Identification: | eso0722d |
Type: | Simulation |
Date de publication: | 25 avril 2007 |
Communiqués de presse en rapport: | eso0722 |
Taille: | 1362 x 2124 px |
À propos de l'objet
Nom: | Gliese 581 |
Type: | Milky Way : Star : Circumstellar Material : Planetary System |
Distance: | 20 années lumière |
Catégorie: | Exoplanets |