Toward an Understanding of the Systematic Uncertainties in Deriving the Primordial Helium Abundance from H II Region Observations

By Skillman E.D.   Terlevich E.   Terlevich R.  

Space Science Reviews, Vol. 84, Iss. 1-2, 1998-04 ,pp. : 105-114

Springer Publishing Company

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Primordial Helium and ∆Y/∆Z from H II Regions and from Fine Structure in the Main Sequence Based on Hipparcos Parallaxes

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Space Science Reviews, Vol. 84, Iss. 1-2, 1998-04 ,pp. : 115-126

Springer Publishing Company

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Primordial Angular Gradients In The Temperature Of The CMBR And The Density Fluctuations

By Melek M.  

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The BM Ori System. II. Abundances of Helium and Iron in the Atmosphere of the Primary Star

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Springer Publishing Company

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Radiative transfer effects during primordial helium recombination

By Chluba Jens   Fung Jeffrey   Switzer Eric R.  

Monthly Notices of the Royal Astronomical Society, Vol. 423, Iss. 4, 2012-07 ,pp. : 3227-3242

Oxford University Press

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