期刊
ASTRONOMY & ASTROPHYSICS
卷 573, 期 -, 页码 -出版社
EDP SCIENCES S A
DOI: 10.1051/0004-6361/201424110
关键词
Sun: abundances; Sun: photosphere; Sun: granulation; line: formation; line: profiles; convection
资金
- Max Planck Institut fur Astrophysik, Garching
- Centre Spatial de Liege
- Department of Astrophysics, Geophysics and Oceanography, University of Liege
- Mount Stromlo Observatory
- IAU Commission 46
- Lorne Trottier Chair in Astrophysics
- (Canadian) Institute for Particle Physics
- Banting Fellowship
- UK Science & Technology Facilities Council
- Australian Research Council
- Royal Belgian Observatory
- STFC [ST/K00414X/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/K00414X/1] Funding Source: researchfish
We redetermine the abundances of all iron group nuclei in the Sun, based on neutral and singly-ionised lines of Sc, Ti, V, Mn, Fe, Co and Ni in the solar spectrum. We employ a realistic 3D hydrodynamic model solar atmosphere, corrections for departures from local thermodynamic equilibrium (NLTE), stringent line selection procedures and high quality observational data. We have scoured the literature for the best quality oscillator strengths, hyperfine constants and isotopic separations available for our chosen lines. We find log epsilon(Sc) = 3.16 +/- 0.04, log epsilon(Ti) = 4.93 +/- 0.04, log epsilon(V) = 3.89 +/- 0.08, log epsilon(Cr) = 5.62 +/- 0.04, log epsilon(Mn) = 5.42 +/- 0.04, log epsilon(Fe) = 7.47 +/- 0.04, log epsilon(Co) = 4.93 +/- 0.05 and log epsilon(Ni) = 6.20 +/- 0.04. Our uncertainties factor in both statistical and systematic errors (the latter estimated for possible errors in the model atmospheres and NLTE line formation). The new abundances are generally in good agreement with the CI meteoritic abundances but with some notable exceptions. This analysis constitutes both a full exposition and a slight update of the preliminary results we presented in Asplund et al. (2009, ARA&A, 47, 481), including full line lists and details of all input data we employed.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据