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Can white dwarfs help solve the cosmological lithium problem?


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CHAPEL HILL, N.C. - For the first time, hard-to-track lithium has been identified and measured in the atmosphere of burned out stars called white dwarfs, according to a study led by the University of North Carolina at Chapel Hill published online in the journal
Lithium helps power cell phones and computers and stabilize moods. But scientists have been stumped by what s become of the lithium that was expected from the Big Bang, a discrepancy known as the cosmological lithium problem.
While researchers believe exploding stars help distribute lithium throughout the galaxy and deliver most of the lithium we use today in electronics and medicine, the UNC-Chapel Hill study may help measure the amount of lithium created in the initial formation of the universe. ....

United States , Chapel Hill , Ben Kaiser , J Christopher Clemens , University Of North Carolina At Chapel Hill , Southern Astrophysical Research , National Science Foundation , University Of Montreal , Los Alamos National Lab , North Carolina , Big Bang , Cerro Tololo Inter American Observatory , ஒன்றுபட்டது மாநிலங்களில் , தேவாலயம் மலை , பென் கைசர் , ஜு கிறிஸ்டோபர் கிளெமென்ஸ் , பல்கலைக்கழகம் ஆஃப் வடக்கு கரோலினா இல் தேவாலயம் மலை , தெற்கு வானியற்பியல் ஆராய்ச்சி , தேசிய அறிவியல் அடித்தளம் , பல்கலைக்கழகம் ஆஃப் மான்ட்ரியல் , லாஸ் அலமோஸ் தேசிய ஆய்வகம் , வடக்கு கரோலினா , பெரியது இடி ,

Remains of asteroids in a white dwarf star could help astronomers find 'missing' lithium


Crushed up asteroids found in the atmosphere of a long-dead white dwarf star could help astronomers find and measure the universe s missing lithium.
Lithium measurements in stars like our own Sun have never added up to the amount scientists predict should exist - suggesting there is much more than we can find. 
The Big Bang, the leading explanation for how the universe began 13.8 billion years ago, produced three elements: hydrogen, helium and lithium. 
Of the three elements, lithium presents the biggest mystery. But the new study by University of North Carolina astronomers provides clues for tracking its evolution. 
Finding traces of the element in the rocky remains of an asteroid in the atmosphere of a nine billion year old white dwarf could help scientists estimate the total amount of lithium in the universe as it suggests it may be dispersed to rocky bodies.  ....

J Christopher Clemens , Southern Astrophysical Research , University Of North Carolina , Big Bang , North Carolina , Goldman Spectrograph , ஜு கிறிஸ்டோபர் கிளெமென்ஸ் , தெற்கு வானியற்பியல் ஆராய்ச்சி , பல்கலைக்கழகம் ஆஃப் வடக்கு கரோலினா , பெரியது இடி , வடக்கு கரோலினா ,