| BISYSTEM OSCILLATION-THEORY OF STARS .2. EXCITATION MECHANISMS | |
Li Y(李焱) ; LI, Y (reprint author), CHINESE ACAD SCI, YUNNAN OBSERV, POB 110, KUNMING 650011, PEOPLES R CHINA.
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| 发表期刊 | ASTRONOMY & ASTROPHYSICS
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| 1992-04 | |
| 卷号 | 257期号:1页码:145-152 |
| 产权排序 | 第1完成单位 |
| 收录类别 | SCI |
| 关键词 | Oscillations Of Stars Excitation Mechanisms |
| 摘要 | The excitation mechanisms of the stellar oscillation due to the interaction of the gas with the radiation are investigated according to the bisystem oscillation theory. The equation for the temporal variation in the kinetic energy of the oscillation and the expression for the work integral valid in the nonequilibrium diffusion are derived. It is found that the excitation mechanisms, which transform the radiation energy into the oscillation one, are of two types, i.e. the "modulation" mechanism and "frozen temperature" mechanism, which result from the nonequilibrium between the gas and radiation. The former is due to the modulation of the process that the gas absorbs or emits the radiation in the unperturbed state by the opacity perturbation, and the latter is due to the nonequilibrium of the gas and radiation produced by the oscillation. Through the careful examination of some previously proposed excitation mechanisms, it is found that the kappa-mechanism and gamma-mechanism belong to the frozen temperature mechanism, and the convective blocking mechanism belongs to the modulation mechanism, though their operating processes were not correctly understood before. However, no mechanism has been found in the bisystem oscillation theory which corresponds to the r-mechanism or bump mechanism, which indicates that these two kinds of excitation mechanism are not real. |
| 语种 | 英语 |
| 学科领域 | Astronomy & Astrophysics |
| 文章类型 | Article |
| ISSN | 0004-6361 |
| URL | 查看原文 |
| WOS记录号 | WOS:A1992HM10600015 |
| WOS研究方向 | Astronomy & Astrophysics |
| WOS类目 | Astronomy & Astrophysics |
| 关键词[WOS] | WHITE-DWARFS ; AP STARS ; PULSATIONS ; CONVECTION |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ynao.ac.cn/handle/114a53/9370 |
| 专题 | 恒星物理研究组 |
| 通讯作者 | LI, Y (reprint author), CHINESE ACAD SCI, YUNNAN OBSERV, POB 110, KUNMING 650011, PEOPLES R CHINA. |
| 作者单位 | Yunnan Observatory, Chinese Academy of Sciences, P.O. Box 110, Kunming 650011, People's Republic of China |
| 第一作者单位 | 中国科学院云南天文台 |
| 推荐引用方式 GB/T 7714 | Li Y,LI, Y . BISYSTEM OSCILLATION-THEORY OF STARS .2. EXCITATION MECHANISMS[J]. ASTRONOMY & ASTROPHYSICS,1992,257(1):145-152. |
| APA | 李焱,&LI, Y .(1992).BISYSTEM OSCILLATION-THEORY OF STARS .2. EXCITATION MECHANISMS.ASTRONOMY & ASTROPHYSICS,257(1),145-152. |
| MLA | 李焱,et al."BISYSTEM OSCILLATION-THEORY OF STARS .2. EXCITATION MECHANISMS".ASTRONOMY & ASTROPHYSICS 257.1(1992):145-152. |
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| 文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
| BISYSTEM OSCILLATION（153KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 | |
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