Improving helium abundance determinations with Leo P as a case study

Currently, the primordial helium abundance is best estimated through spectroscopic observations of H II regions in metal-poor galaxies. However these determinations are limited by several systematic uncertainties which ultimately limit our ability to accurately ascertain the primordial abundance. In...

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Veröffentlicht in:	Journal of cosmology and astroparticle physics 2021-03, Vol.2021 (3), p.27
Hauptverfasser:	Aver, Erik, Berg, Danielle A., Olive, Keith A., Pogge, Richard W., Salzer, John J., Skillman, Evan D.
Format:	Artikel
Sprache:	eng
Schlagworte:	ASTRONOMY AND ASTROPHYSICS Emissions Galaxies H II regions Helium Uncertainty
Online-Zugang:	Volltext
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