| Methanol absorption at 12.2 GHz towards Sgr B2 | |
WHITEOAK, JB1; GARDNER, FF1; CASWELL, JL1; NORRIS, RP1; WELLINGTON, KJ1; Peng SL(彭守礼)2
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| 发表期刊 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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| 1988-12 | |
| 卷号 | 235期号:3页码:655-662 |
| 产权排序 | 第2完成单位 |
| 收录类别 | SCI |
| 摘要 | The 12.2-GHz 20-3-1 transition of CH3OH has been mapped over the continuum source Sgr B2 with a 2-arcmin beam. Strong absorption was observed from three molecular clouds at velocities near 50, 65 and 80 km s-1; the line-to-continuum ratios attained maximum values of 0.70, 0.75 and 0.45 for these clouds. In addition, maser emission was detected near the location of the southernmost H2CO masers. The CH3OH absorption characteristics for these clouds, for foreground clouds near zero velocity, and for the 40 km s-1 cloud towards Sgr A, are all similar to those observed for the 14.5 GHz transition of H2CO. The column densities, however, are about an order of magnitude higher for CH3OH than for H2CO. |
| 语种 | 英语 |
| 学科领域 | Astronomy & Astrophysics |
| 文章类型 | Article |
| ISSN | 0035-8711 |
| URL | 查看原文 |
| WOS记录号 | WOS:A1988R186300011 |
| WOS研究方向 | Astronomy & Astrophysics |
| WOS类目 | Astronomy & Astrophysics |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ynao.ac.cn/handle/114a53/4085 |
| 专题 | 其他 |
| 通讯作者 | WHITEOAK, JB |
| 作者单位 | 1.Division of Radiophysics, CSIRO, PO Box 76, NSW 2121, Australia 2.Yunnan Observatory, PO Box 110, Kunming, People's Republic of China |
| 推荐引用方式 GB/T 7714 | WHITEOAK, JB,GARDNER, FF,CASWELL, JL,et al. Methanol absorption at 12.2 GHz towards Sgr B2[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,1988,235(3):655-662. |
| APA | WHITEOAK, JB,GARDNER, FF,CASWELL, JL,NORRIS, RP,WELLINGTON, KJ,&Peng SL.(1988).Methanol absorption at 12.2 GHz towards Sgr B2.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,235(3),655-662. |
| MLA | WHITEOAK, JB,et al."Methanol absorption at 12.2 GHz towards Sgr B2".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 235.3(1988):655-662. |
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| 文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
| Methanol absorption （179KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 | |
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