The comparable analysis of the Cepheids and non-variable supergiants from the instability strip.I |
| |
| Authors: | Sergei M Andrievsky Valery V Kovtyukh |
| |
| Institution: | (1) Department of Astronomy, Odessa State University, Shevchenko Park, 270014 Odessa, Ukraine |
| |
| Abstract: | The elemental abundances, temperatures, gravities and microturbulence velocities were derived for 14 non-variable supergiants from the Cepheids' instability strip and two hotter supergiants. For 8 stars the abundances were determined for the first time. The comparable analysis of the program stars' chemical composition and that of the small-amplitude Cepheids has shown that there is no essential differences in the elemental abundances for two stellar groups. Some discussion of the phenomenon of non-variable supergiants in the instability strip is given. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
