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The chemical composition of solar-type stars in comparison with that of the Sun |
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| Authors: | Bengt Gustafsson Jorge Meléndez Martin Asplund David Yong |
| Institution: | 1. Institutionen f?r Fysik och Astronomi, Uppsala Universitet, Uppsala, Sweden 2. Centro de Astrofísica da Universidade do Porto, Porto, Portugal 3. Max-Planck-Institut für Astrophysik, Garching, Germany 4. Research School of Astronomy & Astrophysics, Australian National University, Canberra, Australia |
| Abstract: | 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. |
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