| Full text | |
| Author(s): |
Melendez, Jorge
;
Feltzing, S
;
Zhao, G
;
Walton, NA
;
Whitelock, PA
Total Authors: 5
|
| Document type: | Journal article |
| Source: | SETTING THE SCENE FOR GAIA AND LAMOST; v. 9, n. 298, p. 12-pg., 2014-01-01. |
| Abstract | |
The Sun is used as the fundamental standard in chemical abundance studies, thus it is important to know whether the solar abundance pattern is representative of the solar neighborhood. Albeit at low precision (0.05 - 0.10 dex) the Sun seems to be a typical solar-metallicity disk star, at high precision (0.01 dex) its abundance pattern seems abnormal when compared to solar twins. The Sun shows a deficiency of refractory elements that could be due to the formation of terrestrial planets. The formation of giant planets may also introduce a signature in the chemical composition of stars. We discuss both planet signatures and also the enhancement of neutron-capture elements in the solar twin 18 Sco. (AU) | |
| FAPESP's process: | 12/24392-2 - High precision spectroscopy: impact in the study of planets, stars, the galaxy and cosmology |
| Grantee: | Jorge Luis Melendez Moreno |
| Support Opportunities: | Research Projects - Thematic Grants |