The photospheric solar oxygen project: I. Abundance analysis of atomic lines and influence of atmospheric models

Understand

The solar oxygen abundance has undergone a major downward revision in the last decade, the most noticeable one being the update including 3D hydrodynamical simulations to model the solar photosphere.

• Up to now, such an analysis has been carried out only by one group using one radiation-hydrodynamics code.
• We investigate the photospheric oxygen abundance considering lines from atomic transitions.
• We also consider the relationship between the solar model used and the resulting solar oxygen abundance, to understand whether the downward abundance revision is specifically related to 3D hydrodynamical effects.