On the helium and heavy-element enrichment of the interstellar medium

Details On the helium and heavy-element enrichment of the interstellar medium On the helium and heavy-element enrichment of the interstellar medium

Oct 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986pasp...98.1057p&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 98, Oct. 1986, p. 1057-1060.

Astronomy and Astrophysics

Astronomy

48

Abundance, Hydrogen Clouds, Interstellar Chemistry, Interstellar Gas, Stellar Evolution, Galactic Evolution, Helium, Metallicity

Scientific paper

A short review is given of ΔY/ΔZ determinations. The most
accurate results based on galactic and extragalactic H II regions
correspond to ΔY/ΔZ ˜ 3.5 ± 0.7. Some of the
implications of this result are briefly discussed.

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