The metallic-line star HD 153286 |
| |
Authors: | Semanur Engin |
| |
Affiliation: | (1) Astronomical Institute of the Ankara University, Ankara, Turkey;(2) Astronomical Observatory of Trieste, Italy |
| |
Abstract: | The spectrum of the metallic-line and magnetic star HD 153286 has been studied. The line intensity is constant within the limit of the errors, while the radial velocity is slightly variable. A differential analysis by means of the curve-of-growth method has been made, using 5 And, F5 V as standard star. Moreover, an atmospheric model has been computed; the results of the fine analysis indicate a defect of Sc by a factor of 30 and a defect of Ca by a factor included between 4 and 25; Si, Ti, V, Cr and Fe are normal, Mn, Co, Ni in slight excess by factors included between 2 and 5. Sr, Y, Zr, Ba and La are in excess by factors lower than 10; Ce, Nd and Sm are almost normal; Eu and Gd are in excess by factors of 250 and 4, respectively. These results are compared with the predictions of the diffusion theory. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|