Institutional Repository of Radio Astronomy Research Laboratory
| Statistical properties of 6.7 GHz methanol maser sources | |
| Xu, Ye1,2; Zheng, Xing-Wu3; Jiang, Dong-Rong2 | |
| 2003-02-01 | |
| Source Publication | CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS
 |
| ISSN | 1009-9271 |
| Volume | 3Issue:1Pages:49-68 |
| Contribution Rank | 1 |
| Abstract | We present a statistical analysis of 482 6.7 GHz methanol maser sources from the available literature, on their maser emission and the characteristics of their associated infrared sources. On the color-color diagram, more than 70% of the objects fall within a very small region (0.57 less than or equal to [25 - 12] less than or equal to 1.30 and 1.30 less than or equal to [60 - 12] less than or equal to 2.50). This suggests that 6.7 GHz methanol maser emission occurs only within a very short evolutionary phase during the earliest stage of star formation. The velocity ranges of the masers belong to two main groups: one from 1 to 10 km s(-1), and one from about 11 to 20 km s(-1). These velocity ranges indicate that the masers are probably associated with both disks and outflows. The correlations between the maser and infrared flux densities, and between the maser and infrared luminosities, suggest that far-infrared radiation is a possible pumping mechanism for the masers which most probably originate from some outer molecular envelopes or disks. |
| Keyword | Masers Ism : Molecules Stars : Circurnstellar Matter Stars : Formation Ism : Hii Regions |
| Subtype | Article |
| Subject Area | 恒星和恒星物理 |
| WOS Headings | Science & Technology ; Physical Sciences |
| URL | 查看原文 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | STAR-FORMING REGIONS ; ULTRACOMPACT HII-REGIONS ; IRAS-SELECTED SOURCES ; H-II REGIONS ; MOLECULAR CLOUDS ; 5(1)-6(0)A+-METHANOL MASERS ; VLBI OBSERVATIONS ; SOLAR CIRCLE ; MILKY-WAY ; SEARCH |
| Funding Project | 恒星形成与演化研究团组 |
| WOS Research Area | Astronomy & Astrophysics |
| WOS Subject | Astronomy & Astrophysics |
| WOS ID | WOS:000181239600005 |
| Funding Organization | National Natural Science Foundation of China. |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/27 |
| Collection | 射电天文研究室_恒星形成与演化研究团组 |
| Affiliation | 1.Chinese Acad Sci, Natl Astron Observ, Urumqi 830011, Peoples R China 2.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China 3.Nanjing Univ, Dept Astron, Nanjing 210093, Peoples R China |
| First Author Affilication | Xinjiang Astronomical Observatory, Chinese Academy of Sciences |
| Recommended Citation GB/T 7714 | Xu, Ye,Zheng, Xing-Wu,Jiang, Dong-Rong. Statistical properties of 6.7 GHz methanol maser sources[J]. CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,2003,3(1):49-68. |
| APA | Xu, Ye,Zheng, Xing-Wu,&Jiang, Dong-Rong.(2003).Statistical properties of 6.7 GHz methanol maser sources.CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,3(1),49-68. |
| MLA | Xu, Ye,et al."Statistical properties of 6.7 GHz methanol maser sources".CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS 3.1(2003):49-68. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Statistical Properti（1622KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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