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Population III detected at last?

  1. Mar 9, 2006 #1

    Garth

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    Is the identification of a GRB with a 'hyper-nova' at z = 6.295 when the universe was 900 Myrs old (standard model) the first detection of the long awaited Population III stars that caused the 'first light'?Ancient blast comes to light

    That article speaks of a mass of 20MSolar, but I don't know whether that is a determined or 'guessitmated' value.

    Garth
     
    Last edited: Mar 9, 2006
  2. jcsd
  3. Mar 9, 2006 #2

    wolram

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    An observation that should be viewed with utmost caustion, untill some
    confirmation is forthcomming.
     
  4. Mar 9, 2006 #3
    as should any observation at z=6.295!
     
  5. Mar 9, 2006 #4

    Garth

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    Cusumano, G. et al. Nature 440, 164 (2006).
    Kawai, N. et al. Nature 440, 184–186 (2006).
    Haislip, J. B. et al. Nature 440, 181–183 (2006).
    Hmm. Quite a lot of collaboration and three independent observations.

    Garth
     
  6. Mar 10, 2006 #5

    Chronos

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    The metal enriched environment thing makes me doubt the examples given are pop III stars. A cart before the horse thing.
     
  7. Mar 10, 2006 #6

    Garth

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    Well, z = 6.295 would be a late PopIII star, formed in an already metal rich environment, even then metals would have been produced by the star itself during its own lifetime.

    The suggestion, put as a question, that this early super/hyper-nova should be identified with a PopIII star is actually mine, made in the title of this thread.

    Garth
     
    Last edited: Mar 10, 2006
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