Reference : Reconciling Solar Interior Models and Helioseismological Data: Constraints on the Neo...
Scientific congresses and symposiums : Paper published in a book
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/20188
Reconciling Solar Interior Models and Helioseismological Data: Constraints on the Neon Content of the Sun from Nearby B Stars
English
Morel, Thierry [Katholieke Universiteit Leuven, Departement Natuurkunde en Sterrenkunde, Instituut voor Sterrenkunde, Celestijnenlaan 200D, 3001 Leuven, Belgium > > > >]
Butler, Keith [Universitäts-Sternwarte München, Scheinerstrasse 1, D-81679 München, Germany]
1-Nov-2007
Unsolved Problems in Stellar Physics: A Conference in Honor of Douglas Gough
225-228
Yes
International
[en] Solar interior ; Helioseismology ; pulsations ; and shock waves ; Stellar structure ; interiors ; evolution ; nucleosynthesis ; ages ; Abundances ; chemical composition ; Main-sequence: early-type stars
[en] The recent downward revision of the solar CNO photospheric abundances now leads to severe inconsistencies between theoretical models for the Sun's internal structure and the results of helioseismology. There have been claims that the solar Ne abundance may be underestimated and that an increase in this ill-defined quantity could alleviate (or even completely solve) this problem. To address the validity of this hypothesis, we present a fully homogeneous non-LTE abundance analysis of the optical Ne I/II lines in a sample of 18 nearby B-type stars. Our very preliminary results point towards a mean neon abundance slightly higher than the new solar value, but apparently insufficient by itself to restore the agreement between the solar models and the helioseismological constraints.
http://hdl.handle.net/2268/20188
10.1063/1.2818975
http://adsabs.harvard.edu/abs/2007AIPC..948..225M
948

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