Discovery of widespread non-metastable ammonia masers in the Milky Way
文献类型：期刊论文
| 作者 | Yan, Y. T.3; Henkel, C.3,4; Menten, K. M.3; Wilson, T. L.3; Wootten, A.1; Gong, Y.3; Wyrowski, F.3; Yang, W.2,3; Brunthaler, A.3; Kraus, A.3 |
| 刊名 | ASTRONOMY & ASTROPHYSICS
 |
| 出版日期 | 2024-06-13 |
| 卷号 | 686页码:A205 |
| 关键词 | masers ISM: clouds HII regions |
| ISSN号 | 0004-6361 |
| DOI | 10.1051/0004-6361/202348931 |
| 产权排序 | 2 |
| 英文摘要 | We present the results of a search for ammonia maser emission in 119 Galactic high-mass star-forming regions (HMSFRs) known to host 22 GHz H2O maser emission. Our survey has led to the discovery of non-metastable NH3 inversion line masers toward 14 of these sources. This doubles the number of known non-metastable ammonia masers in our Galaxy, including nine new very high-excitation (J, K) = (9,6) maser sources. These maser lines, including NH3 (5,4), (6,4), (6,5), (7,6), (8,6), (9,6), (9,8), (10,8), and (11,9), arise from energy levels of 342 K, 513 K, 465 K, 606 K, 834 K, 1090 K, 942 K, 1226 K, and 1449 K above the ground state. Additionally, we tentatively report a new metastable NH3 (3,3) maser in G048.49 and an NH3 (7,7) maser in G029.95. Our observations reveal that all of the newly detected NH(3 )maser lines exhibit either blueshifted or redshifted velocities with respect to the source systemic velocities. Among the non-metastable ammonia maser lines, larger velocity distributions, offset from the source systemic velocities, are found in the ortho-NH3 (K = 3n) transitions than in the para-NH3 (K not equal 3n) ones. |
| WOS关键词 | STAR-FORMING REGIONS ; I METHANOL MASERS ; WATER MASERS ; ONLINE DATABASE ; HOT AMMONIA ; MHZ SURVEY ; EMISSION ; H2O ; OH ; LINE |
| 资助项目 | China Scholarship Councilhttp://dx.doi.org/10.13039/501100004543 ; International Max Planck Research School (IMPRS) for Astronomy and Astrophysics at the Universities of Bonn and Cologne ; China Scholarship Council (CSC) |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001246762400005 |
| 出版者 | EDP SCIENCES S A |
| 资助机构 | China Scholarship Councilhttp://dx.doi.org/10.13039/501100004543 ; International Max Planck Research School (IMPRS) for Astronomy and Astrophysics at the Universities of Bonn and Cologne ; China Scholarship Council (CSC) |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/6800]  |
| 专题 | 研究单元未命名 |
| 通讯作者 | Yan, Y. T. |
| 作者单位 | 1.Natl Radio Astron Observ, 520 Edgemont Rd, Charlottesville, VA 22903 USA 2.Nanjing Univ, Sch Astron & Space Sci, 163 Xianlin Ave, Nanjing 210023, Peoples R China 3.Max Planck Inst Radioastron, Hugel 69, D-53121 Bonn, Germany 4.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yan, Y. T.,Henkel, C.,Menten, K. M.,et al. Discovery of widespread non-metastable ammonia masers in the Milky Way[J]. ASTRONOMY & ASTROPHYSICS,2024,686:A205. |
| APA | Yan, Y. T..,Henkel, C..,Menten, K. M..,Wilson, T. L..,Wootten, A..,...&Winkel, B..(2024).Discovery of widespread non-metastable ammonia masers in the Milky Way.ASTRONOMY & ASTROPHYSICS,686,A205. |
| MLA | Yan, Y. T.,et al."Discovery of widespread non-metastable ammonia masers in the Milky Way".ASTRONOMY & ASTROPHYSICS 686(2024):A205. |
入库方式： OAI收割
来源：新疆天文台
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。