STAR FORMATION ASSOCIATED WITH THE SUPERNOVA REMNANT IC443
文献类型：期刊论文
| 作者 | Xu, Jin-Long1,2 ; Wang, Jun-Jie1,2; Miller, Martin3
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| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2011-02-01 |
| 卷号 | 727期号:2 |
| 关键词 | ISM: clouds ISM: individual objects (IC443) ISM: molecules ISM: supernova remnants stars: formation |
| 英文摘要 | We have performed submillimeter and millimeter observations in CO lines toward supernova remnant (SNR) IC443. The CO molecular shell coincides well with the partial shell of the SNR detected in radio continuum observations. Broad emission lines and three 1720 MHz OH masers were detected in the CO molecular shell. The present observations have provided further evidence in support of the interaction between the SNR and the adjoining molecular clouds (MCs). The total mass of the MCs is 9.26 x 10(3) M-circle dot. The integrated CO line intensity ratio (RICO(3-2)/ICO(2-1)) for the whole MC is between 0.79 and 3.40. The average value is 1.58, which is much higher than previous measurements of individual Galactic MCs. Higher line ratios imply that shocks have driven into the MCs. We conclude that high RICO(3-2)/ICO(2-1) is identified as a good signature of the SNR-MC interacting system. Based on the IRAS Point Source Catalog and the Two Micron All Sky Survey near-infrared database, 12 protostellar object and 1666 young stellar object (YSO) candidates (including 154 classical T Tauri stars and 419 Herbig Ae/Be stars) are selected. In the interacting regions, the significant enhancement of the number of protostellar objects and YSOs indicates the presence of some recently formed stars. After comparing the characteristic timescales of star formation with the age of IC443, we conclude that the protostellar objects and YSO candidates are not triggered by IC443. For the age of the stellar winds shell, we have performed our calculation on the basis of a stellar wind shell expansion model. The results and analysis suggest that the formation of these stars may be triggered by the stellar winds of the IC443 progenitor. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000286662000020 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/8090]  |
| 专题 | 国家天文台_射电天文研究部 |
| 作者单位 | 1.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 2.NAOC TU Joint Ctr Astrophys, Lhasa 850000, Peoples R China 3.Univ Cologne, Inst Phys, D-50937 Cologne, Germany |
| 推荐引用方式 GB/T 7714 | Xu, Jin-Long,Wang, Jun-Jie,Miller, Martin. STAR FORMATION ASSOCIATED WITH THE SUPERNOVA REMNANT IC443[J]. ASTROPHYSICAL JOURNAL,2011,727(2). |
| APA | Xu, Jin-Long,Wang, Jun-Jie,&Miller, Martin.(2011).STAR FORMATION ASSOCIATED WITH THE SUPERNOVA REMNANT IC443.ASTROPHYSICAL JOURNAL,727(2). |
| MLA | Xu, Jin-Long,et al."STAR FORMATION ASSOCIATED WITH THE SUPERNOVA REMNANT IC443".ASTROPHYSICAL JOURNAL 727.2(2011). |
入库方式： OAI收割
来源：国家天文台
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