Helium diffusion in stars and the value of the cosmological constant

Details Helium diffusion in stars and the value of the cosmological constant Helium diffusion in stars and the value of the cosmological constant

Sep 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987qjras..28..345n&link_type=abstract

Royal Astronomical Society, Quarterly Journal (ISSN 0035-8738), vol. 28, Sept. 1987, p. 345, 346.

Astronomy and Astrophysics

Astronomy

1

Cosmology, Gaseous Diffusion, Helium, Stellar Atmospheres, Stellar Evolution, Atomic Weights, Globular Clusters, Stellar Interiors

Scientific paper

The effect of He diffusion on the evolution of stars is to speed it up by increasing the mean atomic weight at the center, thereby minimizing the apparent conflict between the great ages of globular clusters and the age of the universe, as arrived at via the Hubble constant. Attention is presently given to the consequences of work on this effect by Noerdlinger and Arrigo (1980) and Stringfellow et al. (1983), implying that Tayler's (1986) estimate for globular clusters of 16 Gyr should be reduced to 13 Gyr.

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