Content of hydrogen, helium, and heavy elements in Procyon

Details Content of hydrogen, helium, and heavy elements in Procyon Content of hydrogen, helium, and heavy elements in Procyon

Jun 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985azh....62..602l&link_type=abstract

(Astronomicheskii Zhurnal, vol. 62, May-June 1985, p. 602-604) Soviet Astronomy (ISSN 0038-5301), vol. 29, May-June 1985, p. 350

Astronomy and Astrophysics

Astronomy

1

Abundance, Stellar Atmospheres, Stellar Composition, Stellar Evolution, Helium, Hydrogen, Metallicity

Scientific paper

The chemical composition of the atmosphere of the star Procyon is inferred from evolutionary tracks, and an estimate of Procyon's stage of evolution is obtained. The chemical composition of the star is given as X = 0.77, Z = 0.035, and Y = 0.195. A small decrease in the helium content to Y = 0.195 over the lifetime of the stellar core (1.4 x 10 to the 9th yr) was also found.

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