The Astrophysical Journal· 2026Q1
The LBT Y p Project. I. An Improved Determination of the Primordial Helium Abundance—Project Description, Sample Selection, Observations, and Methodology
- 4citations
- Q1SCImago
- 2026year
Short summary
A new program using the Large Binocular Telescope (LBT) and an improved analysis methodology aims to determine the primordial helium abundance (Yp) with ~0.5% precision, sufficient to constrain the effective number of neutrino families to ~3%.
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Astronomy and AstrophysicsPhysics and Astronomy