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						<h1 itemprop="headline">SAC Seminar - Maurizio Salaris: Lithium in old stars, mixing and big bang nucleosynthesis: old problems, new ideas, any solution?</h1>
						
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														Tirsdag 26. november 2013,
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														&nbsp;kl. 14:15 -  15:00
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														<p>1520-732</p>
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									<p>Speaker: Maurizio Salaris, Astrophysics Research Institute, Liverpool John Moores University, UK
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<p>Title: Lithium in old stars, mixing and big bang nucleosynthesis: old problems, new ideas, any solution?
</p>
<p>Location: 1520-732
</p>
<p>Abstract:<br>The abundance of Lithium in the atmospheres of Pop II dwarfs has become a serious problem, after the recent tight constraints on the cosmological baryon density.
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<p>Is there 'missing physics' (read element transport mechanisms) in stellar models of low-mass stars? Did some pre-Galactic chemical processing affect the Li-abundances we observe now ?
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<p>Do we need to add new physics to Big Bang nucleosynthesis calculations ?
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<p>A brief review of the available data will be presented, together with their interpretation according to stellar evolution modelling, new ideas based on measuring Li in low-luminosity red giants, and hopes that asteroseismology may one day come to the rescue.</p>
								
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