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Thread: Fun with Lithium

  1. #1
    ow efkelley's Avatar
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    Fun with Lithium

    http://www.space.com/scienceastronom...r-planets.html

    Interesting. It's amazing the thing you can potentially learn about a star system simply from the star's composition.
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  2. #2
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    That's pretty cool. So we'll be able to determine if a star had planets in its orbit just by its lithium levels - I wonder why that is though.

  3. #3
    ow efkelley's Avatar
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    It explains that in the article. Our sun has a low lithium content because the lithium is in the planets.
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    Delerium ex Ennui Xelebes's Avatar
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    Quote Originally Posted by efkelley View Post
    It explains that in the article. Our sun has a low lithium content because the lithium is in the planets.
    It doesn't say that. It says the planets create more convection currents within the sun that move the Lithium towards the hotter core.
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  5. #5
    ow efkelley's Avatar
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    Ah, true. I should probably fix my lithium-based eyes.
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  6. #6
    figuring it all out
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    Quote Originally Posted by Xelebes View Post
    It doesn't say that. It says the planets create more convection currents within the sun that move the Lithium towards the hotter core.
    It says that, but also that this is the current idea, and it still hasn't been tested. The low levels of lithium has been confirmed, but this part is still an idea.

  7. #7
    Two years old now. Lyra Jean's Avatar
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    This is fantab. I'm writing an extra-solar colony novel.
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    memento mori small axe's Avatar
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    There are a number of stars that are considered very very similar to our Sun (and thus may favor planet, life, and be better targets for SETI investigation)

    The best possibility is 200 light years away, and one reason the science-daddies like it is: low lithium.

    http://en.wikipedia.org/wiki/HIP_56948

    I'd read about the lithium but really didn't understand why lithium mattered so much until the above. thanks.

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    I gotta say, for something that's supposedly science fact, the article used the phrase "burned up" to hypothesize what happened to the lithium. Burn? Like combustion? A star is a big ball of dense plasma! What they really mean is "transmute" or "fuse" or something in the nuclear realm, not the chemical.

    Freaking irritating, from a website that should know better.

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