Recent three-dimensional, NLTE analyses of the solar spectrum have shown a significant reduction in the C, N, O and Ne abundances leading to a Z/X ratio of the order of 0.0177. We have computed solar models with this new mixture in the OPAL opacity tables. The present He abundance we find seems rather consistent with the helioseismic value. However, the convective envelope is too shallow, and diffusion, even if it reduces the discrepancy, is not able to give the current value. We present some numerical experiments consisting in changing the diffusion velocities and/or the value of opacity at the base of the convective envelope....

Montalbán, J., Miglio, A., Noels, A., Grevesse, N., di Mauro, M.P. (2004). Solar Model with CNO Revised Abundances. ESA SP, 559, 574-576.

Solar Model with CNO Revised Abundances

Miglio, A.;
2004

Abstract

Recent three-dimensional, NLTE analyses of the solar spectrum have shown a significant reduction in the C, N, O and Ne abundances leading to a Z/X ratio of the order of 0.0177. We have computed solar models with this new mixture in the OPAL opacity tables. The present He abundance we find seems rather consistent with the helioseismic value. However, the convective envelope is too shallow, and diffusion, even if it reduces the discrepancy, is not able to give the current value. We present some numerical experiments consisting in changing the diffusion velocities and/or the value of opacity at the base of the convective envelope....
2004
Montalbán, J., Miglio, A., Noels, A., Grevesse, N., di Mauro, M.P. (2004). Solar Model with CNO Revised Abundances. ESA SP, 559, 574-576.
Montalbán, J.; Miglio, A.; Noels, A.; Grevesse, N.; di Mauro, M. P.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/901362
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