Outward-migrating planetary system at Vega?

Go down

Outward-migrating planetary system at Vega?

Post by Lazarus on 29th March 2014, 3:00 pm

Well, it seems to provide a possible explanation for Vega's exozodi...

Raymond & Bonsor "Vega's hot dust from icy planetesimals scattered inward by an outward-migrating planetary system"

A system of planets between ~5 and ~60 AU would be able to explain the exozodi. The outer planets should have masses in the (mini-)Neptune domain 2.5 to 20 Earth masses. A Jupiter-mass planet beyond ~15 AU would be too efficient at scattering planetesimals for this mechanism to work.
dF star
dF star

Number of posts : 3059
Registration date : 2008-06-12

View user profile

Back to top Go down

Back to top

Permissions in this forum:
You cannot reply to topics in this forum