Rapid time variations of water maser emission in W3(OH) and NGC 6334C
文献类型：期刊论文
| 作者 | Xu, Y ; Zheng, XW; Zhang, FJ; Yu, ZY; Han, P; Scalise, E; Chen, YJ
|
| 刊名 | ASTRONOMY & ASTROPHYSICS
 |
| 出版日期 | 2000-12-01 |
| 卷号 | 364期号:1页码:232-236 |
| 关键词 | masers stars : formation ISM : individual objects : NGC 6334F ISM : individual objects : W3(OH) |
| 英文摘要 | We report the observed results of a short time scale monitoring of the 22 GHz water maser emission in W3(OH) and NGC 6334C. Both sources were monitored daily for about a month. The aim of the observations is to investigate the possible presence of very short interval variations on time scales of hours or days. Our observations showed that the flux density of the component at -52.8 km s(-1) in W3(OH) decayed linearly with a timescale of about 19 days, and a maser in NGC 6334C flared rapidly, doubling the flux with a timescale of about 4 days. The rapid time variability of the observed water maser features may be caused by an external pumping event. The collision among dense clumps at sufficient relative velocities supplies the powerful energy required to excite H2O maser emission and then quenches the pump in the following days or longer period. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | H-II REGIONS ; H2O SOURCES ; VAPOR ; NGC-6334 ; STARS ; DISCOVERY |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000166412300031 |
| 公开日期 | 2010-11-08 |
| 源URL | [http://119.78.226.72//handle/331011/12549]  |
| 专题 | 上海天文台_星系宇宙学重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China 2.Chinese Acad Sci, Chinese Natl Observ, Beijing 100080, Peoples R China 3.Nanjing Univ, Dept Astron, Nanjing 210093, Peoples R China 4.Acad Sinica, Purple Mt Observ, Nanjing 210008, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Y,Zheng, XW,Zhang, FJ,et al. Rapid time variations of water maser emission in W3(OH) and NGC 6334C[J]. ASTRONOMY & ASTROPHYSICS,2000,364(1):232-236. |
| APA | Xu, Y.,Zheng, XW.,Zhang, FJ.,Yu, ZY.,Han, P.,...&Chen, YJ.(2000).Rapid time variations of water maser emission in W3(OH) and NGC 6334C.ASTRONOMY & ASTROPHYSICS,364(1),232-236. |
| MLA | Xu, Y,et al."Rapid time variations of water maser emission in W3(OH) and NGC 6334C".ASTRONOMY & ASTROPHYSICS 364.1(2000):232-236. |
入库方式： OAI收割
来源：上海天文台
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