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2015•Astronomy and AstrophysicsOpen access

The photospheric solar oxygen project

Matthias Steffen, D. Prakapavičius, E. Caffau, H.‐G. Ludwig, P. Bonifacio, R. Cayrel, A. Kučinskas, W. Livingston

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Abstract

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.

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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.

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Available abstract

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.

Key concepts: Microturbulence, Standard solar model, Oxygen, Line (geometry), Physics, Astrophysics, Scaling, Spectral line

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