How deep is the solar convection zone

The interpretation by Hill and Caudell (1979) of some of their solar oscillation data as being due to g modes of degree greater than 20 seems to imply that the solar convection zone is much shallower than that in standard solar models, probably representing only a few per cent of the radius. We attempt here to match the observed periods in models of this nature; the rather complicated spectrum of oscillations in such models can be understood in terms of the asymptotic behavior of modes of large degree. Possible excitation mechanisms for the modes are briefly discussed.

[1]  J. Eddy.  The New Solar Physics , 1979 .

[2]  Y. Osaki,et al.  Nonradial Oscillations of a 10 Solar Mass Star in the Main-Sequence Stage , 1975 .

[3]  I. J. Danziger.  THE COSMIC ABUNDANCE OF HELIUM , 1970 .

[4]  P. Joss.  Are stellar surface heavy-element abundances systematically enhanced , 1974 .

[5]  I. Iben,et al.  On the sun's acoustical spectrum. , 1976 .

[6]  T. Brown,et al.  Long-period oscillations of the apparent solar diameter: observations. , 1978 .

[7]  E. Rhodes,et al.  The sensitivity of nonradial p mode eigenfrequencies to solar envelope structure , 1977 .

[8]  Y. Osaki,et al.  Overstability of Gravity Modes in Massive Stars with the Semiconvective Zone , 1976 .

[9]  J. Turner,et al.  Buoyancy Effects in Fluids , 1973 .

[10]  Serge Dumont,et al.  Pleins feux sur la physique solaire , 1978 .

[11]  A. Severny,et al.  Observations of solar pulsations , 1976, Nature.

[12]  William A. Fowler,et al.  Thermonuclear Reaction Rates, III , 1967 .

[13]  J. Christensen-Dalsgaard,et al.  Towards a heliological inverse problem , 1976, Nature.

[14]  T. G. Cowling,et al.  The non-radial oscillations of polytropic stars , 1941 .

[15]  C. McLeod,et al.  The latest results of the velocity spectroscopy of the sun , 1980 .

[16]  Carl Eckart,et al.  Hydrodynamics of oceans and atmospheres , 1960 .

[17]  J. N. Stewart,et al.  ROSSELAND OPACITY TABLES FOR POPULATION I COMPOSITIONS. , 1970 .

[18]  Paul Smeyers,et al.  Avoided Crossing of Modes of Non-radial Stellar Oscillations , 1977 .

[19]  P. Eggleton.  Composition Changes During Stellar Evolution , 1972 .

[20]  T. Brown,et al.  Recent Solar Oblateness Observations: Data, Interpretation, and Significance for Experimental Relativity , 1976 .

[21]  J. R. Brookes,et al.  Observation of free oscillations of the Sun , 1976, Nature.