The chemical composition of solar-type stars in comparison with that of the Sun

被引：20

作者：

Gustafsson, Bengt ^{[1
]}

Melendez, Jorge ^{[2
]}

Asplund, Martin ^{[3
]}

Yong, David ^{[4
]}

机构：

[1] Uppsala Univ, Inst Fys Astron, Uppsala, Sweden

[2] Univ Porto, Ctr Astrofis, P-4100 Oporto, Portugal

[3] Max Planck Inst Astrophys, D-85741 Garching, Germany

[4] Australian Natl Univ, Res Sch Astron & Astrophys, Canberra, ACT, Australia

来源：

ASTROPHYSICS AND SPACE SCIENCE | 2010年 / 328卷 / 1-2期

关键词：

Sun: abundances; Stars: abundances; Solar system: formation; Planetary systems; GALACTIC DISK; REFRACTORY ELEMENTS; EARLY EVOLUTION; GAS ACCRETION; ABUNDANCES; THIN; NEIGHBORHOOD; GRADIENTS; SYSTEM;

D O I：

10.1007/s10509-009-0257-6

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The question whether the solar chemical composition is typical for solar-type stars is analysed by comparing the Sun with different stellar samples, including a sample of stars with very similar parameters, solar twins. Although typical in terms of overall metallicity for stars of solar age and galactic orbit, the solar atmosphere is found to have abundances, as compared with solar twins, that indicate that its gas has once been affected by dust formation and dust separation. It is concluded that this may be related to the formation of the solar planetary system and its special properties.

引用

页码：185 / 191

页数：7

共 55 条

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Alexander CMO, 2001, SCIENCE, V293, P64

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