Dirty solar models

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Mar 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979a%26a....73..121c&link_type=abstract

Astronomy and Astrophysics, vol. 73, no. 1-2, Mar. 1979, p. 121-128. Research supported by the Aarhus Universitet.

Astronomy and Astrophysics

Astrophysics

61

Chemical Composition, Solar Simulation, Stellar Mass Accretion, Stellar Models, Abundance, Heavy Elements, Interstellar Matter, Line Spectra, Luminous Intensity, Neutrinos, Solar Flux, Temperature Gradients, Variational Principles, Vibrational Spectra

Scientific paper

Solar models with low initial heavy-element abundances, Zzero = 0.004 and 0.001, are evolved from the zero-age main sequence on the assumption that their surfaces are contaminated by interstellar material accreted at such a rate as to increase Z uniformly to a value of 0.02 now. The models have thin convective envelopes and low neutrino fluxes, as do uncontaminated models with low Z. Oscillation periods of several modes of low degree are presented for these two models and for a model with Z = 0.02 throughout. They are found to differ sufficiently from model to model for an observational test to be possible, once the degree of the modes observed can be identified.

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