astatisticalstudytowardshighmassbgpsclumpswiththemalt90survey
文献类型：期刊论文
| 作者 | Liu Xiaolan3 ; Xu Jinlong3; Ning Changchun2; Zhang Chuanpeng3; Liu Xiaotao1
|
| 刊名 | researchinastronomyandastrophysics
 |
| 出版日期 | 2018 |
| 卷号 | 000期号:001页码:4 |
| ISSN号 | 1674-4527 |
| 英文摘要 | In this work,we perform a statistical investigation towards 50 high-mass clumps using data from the Bolocam Galactic Plane Survey（BGPS）and Millimetre Astronomy Legacy Team 90-GHz survey（MALT90）.Eleven dense molecular lines(N2H+（1–0）,HNC（1–0）,HCO+（1–0）,HCN（1–0）,HN13C（1–0）,H13CO+（1–0）,C2H（1–0）,HC3N（10–9）,SiO（2–1）,13CS（2–1）and HNCO(44,0-30,3))are detected.N2H+ and HNC are shown to be good tracers for clumps in various evolutionary stages since they are detected in all the fields.The detection rates of N-bearing molecules decrease as the clumps evolve,but those of O-bearing species increase with evolution.Furthermore,the abundance ratiosN2H+/HCO+and log（HC3N/HCO+）decline with log（HCO+）as two linear functions,respectively.This suggests that N+2H+ and HC3N transform to HCOas the clumps evolve.We also find that C2H is the most abundant molecule with an order of magnitude 10-8.In addition,three new infall candidates,G010.214–00.324,G011.121–00.128 and G012.215–00.118（a）,are discovered to have large-scale infall motions and infall rates with an order of magnitude 10-3M⊙yr-1. |
| 语种 | 英语 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/47824]  |
| 专题 | 中国科学院国家天文台 |
| 作者单位 | 1.华中师范大学 2.西藏大学 3.中国科学院国家天文台 |
| 推荐引用方式 GB/T 7714 | Liu Xiaolan,Xu Jinlong,Ning Changchun,et al. astatisticalstudytowardshighmassbgpsclumpswiththemalt90survey[J]. researchinastronomyandastrophysics,2018,000(001):4. |
| APA | Liu Xiaolan,Xu Jinlong,Ning Changchun,Zhang Chuanpeng,&Liu Xiaotao.(2018).astatisticalstudytowardshighmassbgpsclumpswiththemalt90survey.researchinastronomyandastrophysics,000(001),4. |
| MLA | Liu Xiaolan,et al."astatisticalstudytowardshighmassbgpsclumpswiththemalt90survey".researchinastronomyandastrophysics 000.001(2018):4. |
入库方式： OAI收割
来源：国家天文台
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