| An Analysis of the Condensation Temperature of Elements of Extrasolar Planetary Systems |
| |
| 作者姓名： | Cong Huang Gang Zhao Hua-Wei Zhang and Yu-Qin Chen |
| |
| 作者单位： | Cong Huang，Gang Zhao，Hua-Wei Zhang and Yu-Qin Chen Department of Astronomy，Peking University，Beijing 100871 National Astronomical Observatories，Chinese Academy of Sciences，Beijing 100012 |
| |
| 基金项目： | Supported by the National Natural Science Foundation of China. |
| |
| 摘 要： | Using high signal-to-noise ratio spectra of extrasolar planet-hosting stars, we obtained the atmospheric parameters, accurate metallicities and the differential abundance for 15 elements (C, O, Na, Mg, Al, Si, S, Ca, Sc, Ti, V, Cr, Mn, Ni and Ba). In a search for possible signatures of metal-rich material accreting onto the parent stars, we found that , for a given element, there is no significant trend of increasing X/H] with increasing condensation temperature Tc. In our sample of planet-harboring stars, the volatile and refractory elements behave similarly, and we can not confirm if there exists any significant dependence on the condensation temperature Tc.
|
| 关 键 词： | 太阳系 行星 凝结温度 天文物理 |
An Analysis of the Condensation Temperature of Elements of Extrasolar Planetary Systems |
| |
| Cong Huang,Gang Zhao,Hua-Wei Zhang and Yu-Qin Chen.An Analysis of the Condensation Temperature of Elements of Extrasolar Planetary Systems[J].Chinese Journal of Astronomy and Astrophysics,2005,5(6):619-626. |
| |
| Authors: | Cong Huang Gang Zhao Hua-Wei Zhang Yu-Qin Chen |
| |
| Institution: | [1]Department of Astronomy, Peking University, Beijing 100871 [2]National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012 |
| |
| Abstract: | Using high signal-to-noise ratio spectra of extrasolar planet-hosting stars, we obtained the atmospheric parameters, accurate metallicities and the differential abundance for 15 elements (C, O, Na, Mg, Al, Si, S, Ca, Sc, Ti, V, Cr, Mn, Ni and Ba). In a search for possible signatures of metal-rich material accreting onto the parent stars, we found that , for a given element, there is no significant trend of increasing X/H] with increasing condensation temperature Tc. In our sample of planet-harboring stars, the volatile and refractory elements behave similarly, and we can not confirm if there exists any significant dependence on the condensation temperature Tc. |
| |
| Keywords: | planetary systems - stars: abundance - stars: late-type |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
