On 02/09/2012 1:40 PM, Brad Guth wrote:
Could an existing solar system like ours capture a red dwarf without
causing too much trauma for the existing planets? (seem rather
unlikely, as even capturing another Jupiter mass would likely spell
the demise of most all planets of our inner solar system, although
outer planets [those past Saturn] may do just fine unless hit by
debris from inner planet collisions)

No, capturing something like a star would require the ejection of a
planet, perhaps several planets. Namely the more massive gas planets.

Yousuf Khan