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Might A Hot Jupiter Require Another Gas Giant - 3-body Problem?

  1. Oct 11, 2007 #1
    How might hot jupiters arrrive close in, since gas sufficient for their formation would be seem to be further outward? It might seem to require a 3-body 'solution'. That is, must another gas giant have been in the mix for much earlier stages? Perhaps ejecting 1 giant, and retaining the other in a tight orbit? 3-body problems can result in chaotic motion. But still, through simulations, might one conjure up various possible scenarios of how 1 gas giant ends up in a tight orbit?

    n-body problem wikipedia

    google: 3-body problem
     
    Last edited: Oct 11, 2007
  2. jcsd
  3. Oct 18, 2007 #2

    Shooting Star

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    That is an ingenious idea. But what makes you think that Jupiter is too close for a gas giant to form? Have you done any rough calculations?
     
  4. Dec 9, 2007 #3
    Another exoplanet detection approach: infrared telescope?

    If tight orbital hot jupiters are the result of a 3-body or n-body process, in which some are ejected from system, and some migrate into large orbits; then perhaps a dedicated infrared telescope for finding the latter gas giants or brown dwarf. http://en.wikipedia.org/wiki/Brown_dwarf The targets would be discrete infrared luminous objects, as opposed to dust and background; also one would have motion against background. Hence increasing the exoplanet http://en.wikipedia.org/wiki/Exoplanets database with another viable detection modality?
     
    Last edited: Dec 9, 2007
  5. Dec 9, 2007 #4

    tony873004

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    The planets probably migrated as a result of ejecting trillions of smaller objects, rather than 1 massive object.
     
  6. Dec 10, 2007 #5
    planet migration

    Our Ort cloud http://en.wikipedia.org/wiki/Ort_cloud has trillions of objects, although the total mass is not that high; perhaps 3 earth masses; although the ejected material (from our gas giant interaction) might have been much more (50-100 earth masses) Yet we don't have a tight orbital hot jupiter in our system.
     
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