The photospheric solar oxygen project
- M. Steffen
- D. Prakapavičius
- E. Caffau
- H.-G. Ludwig
- P. Bonifacio
- R. Cayrel
- A. Kučinskas
- W. C. Livingston
DOIAbstract
Context. The solar photospheric oxygen abundance is still widely debated. Adopting the solar chemical composition based on the “low” oxygen abundance, as determined with the use of three-dimensional (3D) hydrodynamical model atmospheres, results in a well-known mismatch between theoretical solar models and helioseismic measurements that is so far unresolved. Aims. We carry out an independent redetermination of the solar oxygen abundance by investigating the center-to-limb variation of the O
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