Non-radial oscillations of a 1 solar mass star with an initial discontinuity in chemical composition

Details Non-radial oscillations of a 1 solar mass star with an initial discontinuity in chemical composition Non-radial oscillations of a 1 solar mass star with an initial discontinuity in chemical composition

May 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980a%26a....85...20b&link_type=abstract

Astronomy and Astrophysics, vol. 85, no. 1-2, May 1980, p. 20-25.

Astronomy and Astrophysics

Astrophysics

3

Dynamic Stability, Solar Oscillations, Stellar Models, Sun, Stellar Evolution, Vibration Mode

Scientific paper

The vibrational stability towards non-radial oscillations of a 1-solar-mass star with a low or zero initial hydrogen abundance in the inner 3 percent of the mass is studied. The star becomes unstable at an age of 50 million yr. Stability is restored after one and a half billion years. The star exhibits particular modes associated with the discontinuity in density, which are strongly damped. The comparison between the predicted period spectrum of the model corresponding to the present sun and observations is discussed.

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