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Planet Foramtion without stars

  1. Jun 1, 2008 #1
    has anyone ever done research on the accretion of planets into a system without a star forming? Just a dark system. How likely is this to happen as opposed to a system forming with a star?
     
  2. jcsd
  3. Jun 1, 2008 #2
    ..what would the planets orbit?
     
  4. Jun 2, 2008 #3

    Borek

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    Staff: Mentor

    Central body can be massive, but it can be not massive enough to become a star. Like a brown dwarf (check wikipedia article). See also wiki entry on Cha 110913-773444.
     
  5. Jun 2, 2008 #4

    Chronos

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    As Borek noted, planet formation does not require a star. An oversized 'Jupiter' would be sufficient. I expect any such planets would, however, be small.
     
  6. Jun 3, 2008 #5
    "David Bennett of the University of Notre Dame has discovered an extra-solar planet of about three Earth masses orbiting a star with a mass so low that its core may not be large enough to maintain nuclear reactions"

    I noticed this on Science Daily this morning.

    http://www.sciencedaily.com/releases/2008/06/080602131105.htm
     
  7. Jun 3, 2008 #6
    Reference:
    Interstellar planet - Wikipedia
    Sub-brown dwarf - Wikipedia
     
    Last edited: Jun 3, 2008
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