| タイトル | Evolutionary sequences of stellar models of intermediate and high mass including convective core overshooting |
| 著者（英） | Chin, Chao-Wen; Stothers, Richard B. |
| 著者所属（英） | NASA Goddard Inst. for Space Studies |
| 発行日 | 1991-10-01 |
| 言語 | eng |
| 内容記述 | Stellar evolution with parameterized overshooting from the convective core has been studied for the stellar mass range M/M(solar) = 3-30 and for the initial chemical composition range Xe = 0.650-0.739 (hydrogen) and Ze = 0.021-0.044 (metals). Evolutionary sequences run from the zero-age main sequence to the end of core helium burning, but emphasis is placed here on the core helium-burning phase. Convective core overshooting during the previous main-sequence phase leads, in most cases, to a shortening of the blue loop on the H-R diagram that forms when helium is being depleted in the core. On the other hand, convective overshooting from the helium-burning core has the opposite effect. A larger initial metals abundance also tends to shorten the blue loop. In an extreme case the blue loop can be fully suppressed, but in a marginal case the normal trend can be reversed. |
| NASA分類 | ASTROPHYSICS |
| レポートNO | 91A53723 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/345529 |
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