Primordial Helium Abundance Determinations

Bibcode
2001RMxAC..10..148P
Peimbert, A.; Peimbert, M.; Luridiana, V.
Bibliographical reference

The Seventh Texas-Mexico Conference on Astrophysics: Flows, Blows and Glows (Eds. William H. Lee and Silvia Torres-Peimbert) Revista Mexicana de Astronomía y Astrofísica (Serie de Conferencias) Vol. 10, pp. 148-153 (2001)

Advertised on:
3
2001
Number of authors
3
IAC number of authors
0
Citations
8
Refereed citations
5
Description
Based on the best observations of extragalactic H II regions of low metallicity available in the literature we redetermine the primordial helium abundance, Y[p], taking into account all the observed He I line intensities with the exception of those strongly affected by underlying absorption. We derive He/H, N[e](He II), T[e](He II), and τ (3889) self-consistently. We present results for NGC 346, I Zw 18, and NGC 2363. From these objects we find that Y[p] = 0.2351+/-0.0022.
Type
Non-refereed
Galaxies
H II regions

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