Solar abundances and 3D model atmospheres

被引:5
|
作者
Ludwig, Hans-Guenter [1 ,2 ]
Caffau, Elisabetta [2 ]
Steffen, Matthias [3 ]
Bonifacio, Piercarlo [1 ,2 ,4 ]
Freytag, Bernd [1 ,2 ,5 ]
Cayrel, Roger [2 ]
机构
[1] Univ Paris Diderot, CIFIST Marie Curie Excellence Team, F-92195 Meudon, France
[2] Univ Paris Diderot, CNRS, GEPI, Observ Paris, F-92195 Meudon, France
[3] Astrophys Inst Potsdam, D-14482 Potsdam, Germany
[4] INAF Osservatorio Astron Trieste, I-34143 Trieste, Italy
[5] Univ Lyon, CNRS, Ecole Normale Super Lyon, CRAL,UMR 5574, F-69364 Lyon 07, France
来源
CHEMICAL ABUNDANCES IN THE UNIVERSE: CONNECTING FIRST STARS TO PLANETS | 2010年 / 265期
关键词
OXYGEN ABUNDANCE; LINES;
D O I
10.1017/S1743921310000542
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We present solar photospheric abundances for 12 elements from optical and near-infrared spectroscopy. The abundance analysis was conducted employing 3D hydrodynamical ((COBOLD)-B-5) as well as standard 1D hydrostatic model atmospheres. We compare our results to others with emphasis on discrepancies and still lingering problems, in particular exemplified by the pivotal abundance of oxygen. We argue that; the thermal structure of the lower solar photosphere is very well represented by our 3D model. We obtain an excellent match of the observed center-to-limb variation of the line-blanketed continuum intensity, also at wavelengths shortward of the Balmer jump.
引用
收藏
页码:201 / +
页数:2
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