Supernova remnants and the spiral structure of the Galaxy
文献类型：期刊论文
| 作者 | Song, GX |
| 刊名 | CHINESE ASTRONOMY AND ASTROPHYSICS
 |
| 出版日期 | 1999-10-01 |
| 卷号 | 23期号:4页码:435-444 |
| 关键词 | giant molecular clouds spiral arms supernova remnants |
| 英文摘要 | A set of unit clouds of 10(4) M., randomly distributed between 3 and 7 kpc radii, move under the general gravitation of the galactic disk and their mutual gravitation. When the clouds collide they form loose aggregates or giant molecular clouds (GMC). Star formation rate is assumed to be proportional to the mass of the GMC. The more massive stars formed soon turn into supernovae, which in turn break up the GMC back into the unit clouds. After some 350 Myr a steady state is reached, in which the GMCs have a mass spectrum of gradient -1.6, and has the mass-radius relation M proportional to R(2), both in agreement with the observations. From our simulation we find there should be less than or similar to 775 +/- 12 supernova remnants in our galaxy. The existence of spiral arms does not increase the production rate of supernova remnants, but it does make the GMCs to concentrate around them. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | PLANE-CO SURVEY ; MOLECULAR CLOUDS ; STAR FORMATION |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000084530700005 |
| 源URL | [http://119.78.226.72/handle/331011/28156]  |
| 专题 | 上海天文台_星系宇宙学重点实验室 |
| 作者单位 | Chinese Acad Sci, Shanghai Observ, Shanghai 200030, Peoples R China |
| 推荐引用方式 GB/T 7714 | Song, GX. Supernova remnants and the spiral structure of the Galaxy[J]. CHINESE ASTRONOMY AND ASTROPHYSICS,1999,23(4):435-444. |
| APA | Song, GX.(1999).Supernova remnants and the spiral structure of the Galaxy.CHINESE ASTRONOMY AND ASTROPHYSICS,23(4),435-444. |
| MLA | Song, GX."Supernova remnants and the spiral structure of the Galaxy".CHINESE ASTRONOMY AND ASTROPHYSICS 23.4(1999):435-444. |
入库方式： OAI收割
来源：上海天文台
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