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Astron. Astrophys. 322, 671-673 (1997)

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Research Note

Local mixing near the solar core, neutrino fluxes and helioseismology

Olivier Richard and Sylvie Vauclair

Observatoire Midi-Pyrénées 14, avenue Edouard Belin, F-31400 Toulouse, France

Received 10 October 1996 / Accepted 18 November 1996


We have computed solar models similar to those published in Richard, Vauclair, Charbonnel, Dziembowski (1996), in which we have added local mixing near the solar core in order to decrease the neutrino production. The results show that the neutrino fluxes are reduced as expected (although not enough to account for the observed values), but the obtained models are incompatible with the inversion of the helioseismic modes. We have specially tested the parametrized mixing proposed by Morel and Schatzman (1996). The resulting solar models are far from the seismic model and thus unrealistic.

Key words: diffusion – Sun: abundances; interior; rotation; oscillations

Send offprint requests to: Sylvie Vauclair

© European Southern Observatory (ESO) 1997

Online publication: June 5, 1998