Exploring 7Li Abundances: Current Consensus and Recommended Papers | Kea

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In summary, the conversation discusses recommended papers on 7Li abundances and the current consensus on the issue. The papers mentioned are "Updated Big-Bang Nucleosynthesis compared to WMAP results" and "Inhomogeneous Big Bang Nucleosynthesis Revisited". While the latter seems to provide 7Li concordance, it is considered speculative and not many people are actively trying to resolve the mystery. The possibility of a "depletion factor for stellar processes" is also mentioned.
  • #1
Kea
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To the experts

What are a couple of recommended papers on 7Li abundances? I have had a quick look at Steigman, and he seems to conclude that the problem might well be in the nuclear physics. What is the current consensus?

Cheers
Kea :smile:
 
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  • #3
Chronos said:
http://arxiv.org/abs/astro-ph/0603817
Inhomogeneous Big Bang Nucleosynthesis Revisited

Thanks, Chronos. This paper seems to get 7Li concordance (for WMAP3) with a "depletion factor for stellar processes". That doesn't sound very convincing to me...unless we expect a large depletion factor to arise this way?

:smile:
 
  • #4
Yep, it wasn't terribly convincing to me either Kea. Hence, 'speculative' remains the word of the day. It also doesn't appear a huge number of people are clammoring for collider/telescope time to resolve this mystery. Since I have too much free time, I will attempt to explore this a bit deeper if desired.
 

FAQ: Exploring 7Li Abundances: Current Consensus and Recommended Papers | Kea

1. What is the significance of exploring 7Li abundances?

Exploring 7Li abundances is important because it can provide insights into the formation and evolution of stars and galaxies. The abundance of 7Li, a primordial element, can also shed light on the processes that occurred during the early stages of the universe.

2. What is the current consensus on 7Li abundances?

The current consensus is that 7Li abundances in metal-poor stars are significantly lower than predicted by standard Big Bang Nucleosynthesis models. However, there is still debate and ongoing research on the exact reasons for this discrepancy.

3. What methods are used to determine 7Li abundances?

The most common method is spectroscopy, which involves analyzing the spectral lines of 7Li in stars to determine its abundance. Other methods include studying the isotopic ratios of lithium in meteorites and using simulations to model the production of 7Li in different environments.

4. What are some recommended papers on exploring 7Li abundances?

Some recommended papers include "The Primordial Lithium Problem" by Ryan Cooke, "Lithium in the Early Universe" by Jieun Choi and Brian Fields, and "A Comparison of Lithium Abundances in Metal-Poor Stars from Different Sources" by Mitha Apodaca and David Tytler.

5. How does exploring 7Li abundances relate to other areas of astrophysics?

Exploring 7Li abundances is closely related to other areas of astrophysics, such as cosmology, stellar evolution, and nucleosynthesis. It can also provide important insights into the formation and evolution of the Milky Way and other galaxies.

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