Formation process of the planetary system around HD 69830

Illustration of the possible formation process and present day structure of the planetary system around HD 68930. The three planets form from embryos originally located at larger distances (dashed ellipses) than the present ones (indicated by solid ellipses at 0.07, 0.18 and 0.63 the mean Earth-Sun distance). The embryos of the inner and middle planets start interior to the ice line, so that these two planets build up from rocky planetesimals and gas. The two planets consist of a central rocky core (in brown) and an envelope of gas (in gray). The embryo of the outermost planet starts beyond the ice line, and the planet accumulates a large amount of ice at the beginning of its formation. The planet finally consists of a central rocky core (brown), surrounded by a shell of water (ice or liquid - in blue), and a quite massive gas envelope (gray).

Crediti:

ESO

A proposito dell'immagine

Identificazione:eso0618e
Tipo:Illustrazione
Data di pubblicazione:18 Maggio 2006
Notizie relative:eso0618
Dimensione:1630 x 749 px

A proposito delll'oggetto

Nome:HD 69830
Tipo:Milky Way : Star : Circumstellar Material : Planetary System
Distanza:40 Anni luce
Categoria:Exoplanets

Formati delle immagini

JPEG grande
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