Formation of new stellar populations from gas accreted by massive young star clusters
文献类型：期刊论文
| 作者 | Li, Chengyuan1,2,3,4; de Grijs, Richard1,2,5; Deng, Licai3; Geller, Aaron M.6,7,8; Xin, Yu3; Hu, Yi3; Faucher-Giguere, Claude-Andre6,7 |
| 刊名 | NATURE
 |
| 出版日期 | 2016-01-28 |
| 卷号 | 529期号:7587页码:502-+ |
| 英文摘要 | Stars in clusters are thought to form in a single burst from a common progenitor cloud of molecular gas. However, massive, old 'globular' clusters-those with ages greater than ten billion years and masses several hundred thousand times that of the Sun-often harbour multiple stellar populations(1-4), indicating that more than one star-forming event occurred during their lifetimes. Colliding stellar winds from late-stage, asymptotic-giant-branch stars(5-7) are often suggested to be triggers of second-generation star formation. For this to occur(8), the initial cluster masses need to be greater than a few million solar masses. Here we report observations of three massive relatively young star clusters (1-2 billion years old) in the Magellanic Clouds that show clear evidence of burst-like star formation that occurred a few hundred million years after their initial formation era. We show that such clusters could have accreted sufficient gas to form new stars if they had orbited in their host galaxies' gaseous disks throughout the period between their initial formation and the more recent bursts of star formation. This process may eventually give rise to the ubiquitous multiple stellar populations in globular clusters. |
| WOS标题词 | Science & Technology |
| 类目[WOS] | Multidisciplinary Sciences |
| 研究领域[WOS] | Science & Technology - Other Topics |
| 关键词[WOS] | SMALL-MAGELLANIC-CLOUD ; MAIN-SEQUENCE TURNOFFS ; SUB-GIANT BRANCH ; GLOBULAR-CLUSTERS ; MULTIPLE POPULATIONS ; MILKY-WAY ; EVOLUTION ; GALAXIES ; ENRICHMENT ; ORIGIN |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000368673800031 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/16115]  |
| 专题 | 紫金山天文台_院士文集_熊大闰 |
| 作者单位 | 1.Peking Univ, Kavli Inst Astron & Astrophys, Yi He Yuan Lu 5, Beijing 100871, Peoples R China 2.Peking Univ, Dept Astron, Yi He Yuan Lu 5, Beijing 100871, Peoples R China 3.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, 20A Datun Rd, Beijing 100012, Peoples R China 4.Chinese Acad Sci, Purple Mt Observ, 2 West Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China 5.Int Space Sci Inst Beijing, 1 Nanertiao, Beijing 100190, Peoples R China 6.Northwestern Univ, CIERA, 2145 Sheridan Rd, Evanston, IL 60208 USA 7.Northwestern Univ, Dept Phys & Astron, 2145 Sheridan Rd, Evanston, IL 60208 USA 8.Univ Chicago, Dept Astron & Astrophys, 5640 S Ellis Ave, Chicago, IL 60637 USA |
| 推荐引用方式 GB/T 7714 | Li, Chengyuan,de Grijs, Richard,Deng, Licai,et al. Formation of new stellar populations from gas accreted by massive young star clusters[J]. NATURE,2016,529(7587):502-+. |
| APA | Li, Chengyuan.,de Grijs, Richard.,Deng, Licai.,Geller, Aaron M..,Xin, Yu.,...&Faucher-Giguere, Claude-Andre.(2016).Formation of new stellar populations from gas accreted by massive young star clusters.NATURE,529(7587),502-+. |
| MLA | Li, Chengyuan,et al."Formation of new stellar populations from gas accreted by massive young star clusters".NATURE 529.7587(2016):502-+. |
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来源：紫金山天文台
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