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Brown dwarfs cool and darken steadily over their lifetimes: sufficiently old brown dwarfs will be too faint to be detectable.

 
Anonymous Coward
User ID: 1437750
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06/21/2011 05:46 PM
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Brown dwarfs cool and darken steadily over their lifetimes: sufficiently old brown dwarfs will be too faint to be detectable.
I found this Wikipedia entry interesting...

"Luminosity: Main sequence stars cool, but eventually reach a minimum luminosity which they can sustain through steady fusion. This varies from star to star, but is generally at least 0.01% the luminosity of our Sun. Brown dwarfs cool and darken steadily over their lifetimes: sufficiently old brown dwarfs will be too faint to be detectable."


Just a thought

[link to en.wikipedia.org]
Anonymous Coward
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06/21/2011 05:53 PM
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Re: Brown dwarfs cool and darken steadily over their lifetimes: sufficiently old brown dwarfs will be too faint to be detectable.
Leik omfg
nomuse (not logged in)
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06/21/2011 07:42 PM
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Re: Brown dwarfs cool and darken steadily over their lifetimes: sufficiently old brown dwarfs will be too faint to be detectable.
At astronomical distances, sure.

There are GALAXIES that are undetectable for very good observational reasons. But I bet you'd notice one if it was nearby.

A brown dwarf inside the orbit of Neptune would be a naked-eye object. Plain and simple. This is pure surface reflectivity -- nothing to do with inner heat.
Anonymous Coward
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Switzerland
06/22/2011 04:06 AM
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Re: Brown dwarfs cool and darken steadily over their lifetimes: sufficiently old brown dwarfs will be too faint to be detectable.
everybody on this forum must have seen already some videos and pictures

of the secdon sun which was at the right side of the sun, the last videio

I saw about was from the lake Balaton in Hungary. The obejct is def. there.

And almost all of us have seen it in the videos. Why does everybody still

search for it and think that it is not there??? It is there and it is a brown dwarf

and because it is getting closer to the sun there are more erruptions there...


thanks for this informations OP!!

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