Distance and evolutionary state of the supernova remnant G18.1-0.1
文献类型：期刊论文
| 作者 | Leahy, Denis1; Green, Kaylie1; Tian, Wenwu2
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| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2014-02-01 |
| 卷号 | 438期号:2页码:1813-1819 |
| 关键词 | ISM: individual objects: G18.1-0.1 ISM: supernova remnants radio lines: ISM X-rays: ISM |
| 英文摘要 | We analyse radio and X-ray observations of the supernova remnant (SNR) G18.1-0.1 and the overlapping and surrounding HII regions. The HI absorption spectra yield a new distance of 5.6 kpc to G18.1-0.1 and confirm previous distance estimates for the surrounding HII regions. All of the HII regions are significantly closer (d = 2.9 to 4.1 kpc) than SNR G18.1-0.1, so we conclude that they are not physically associated. Chandra archival X-ray observations of G18.1-0.1 show extended shell-type X-ray emission from the SNR. The X-ray spectrum is used to determine that the SNR is in the Sedov adiabatic expansion phase. G18.1-0.1 is similar or equal to 8.9 pc radius, middle-aged (5 kyr), expanding in normal density interstellar medium (similar or equal to 0.6 cm(-3)) and has a low explosion energy (similar or equal to 2.5 x 10(50) erg). |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000330955900068 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/6502]  |
| 专题 | 国家天文台_光学天文研究部 |
| 作者单位 | 1.Univ Calgary, Calgary, AB T2N 1N4, Canada 2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China |
| 推荐引用方式 GB/T 7714 | Leahy, Denis,Green, Kaylie,Tian, Wenwu. Distance and evolutionary state of the supernova remnant G18.1-0.1[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2014,438(2):1813-1819. |
| APA | Leahy, Denis,Green, Kaylie,&Tian, Wenwu.(2014).Distance and evolutionary state of the supernova remnant G18.1-0.1.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,438(2),1813-1819. |
| MLA | Leahy, Denis,et al."Distance and evolutionary state of the supernova remnant G18.1-0.1".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 438.2(2014):1813-1819. |
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来源：国家天文台
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