A solar model having an isolated unstable 160-min mode

Details A solar model having an isolated unstable 160-min mode A solar model having an isolated unstable 160-min mode

Sep 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987pazh...13..789v&link_type=abstract

Pis'ma v Astronomicheskii Zhurnal (ISSN 0320-0108), vol. 13, Sept. 1987, p. 789-796. In Russian. In Russian.

Astronomy and Astrophysics

Astronomy

1

Solar Oscillations, Stellar Models, Vibration Mode, Convective Heat Transfer, Stellar Cores, Stellar Envelopes, Stellar Temperature, Temperature Gradients

Scientific paper

A 4-zone solar model is considered which contains a convective core, a chemically inhomogeneous convectively neutral zone, a radiative zone and a convective envelope. On the core boundary such an abrupt change in the density and molecular weight is supposed to be present due to which a deeply localized 160-min mode turns out to exist. This mode is usually unstable. In this model the heavy element abundance at the bottom of the inhomogeneous neutral zone having a superadiabatic temperature gradient is slightly larger than in the core. A brief discussion of the frequencies of deeply penetrating 5-min modes for the model in question is also given.

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