Measurements of HD 40307

The HARPS radial velocity measurements of HD 40307 are folded with the orbital periods of the three discovered planets: 4.3, 9.6, and 20.4 days, respectively. In each case, the contribution of the two other planets has been subtracted. The solid line shows the best fit to the measurements, corresponding to minimum masses of 4.2, 6.7, and 9.4 Earth masses. Note that the full span of the vertical axis is only 10 m/s! Error bars indicate the accuracy of the measurements.

Bildnachweis:

ESO

Über das Bild

ID:eso0819b
Typ:Beobachtung
Veröffentlichungsdatum:16. Juni 2008
Dazugehörige Veröffentlichungen:eso0819
Größe:2476 x 4094 px

Über das Objekt

Name:HD 40307
Typ:Milky Way : Star : Circumstellar Material : Planetary System
Milky Way : Star : Evolutionary Stage : Main Sequence
Entfernung:40 Lichtjahre
Kategorie:Exoplanets

Bildformate

Großes JPEG
1,1 MB

Farben & Filter

SpektralbereichTeleskop
OptischESO 3.6-metre telescope
HARPS