Resolving the nature of the Rosette HH 1 jet facing strong UV dissipation
文献类型：期刊论文
| 作者 | Li, Jin Zeng; Chu, You-Hua; Gruendl, Robert A.; Bally, John; Su, Wei |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2007-04-20 |
| 卷号 | 659期号:2页码:1373-1381 |
| 关键词 | accretion accretion disks ISM : Herbig-Haro objects ISM : jets and outflows stars : formation stars : pre-main-sequence |
| 英文摘要 | The Rosette HH 1 jet is a collimated flow immersed in the strong UV radiation field of the Rosette Nebula. We investigate the physical properties of the Rosette HH 1 jet using high-quality narrowband images and high-dispersion spectroscopy. The new images show that the axis of the jet is not precisely aligned with the star near the base of the jet. The high resolution of the spectra allows us to accurately determine the contributions from the H II region, jet, and star. The approaching and receding sides of the expanding shell of the Rosette Nebula are at heliocentric velocities of 13 and 40 km s(-1), while the jet reaches a maximum velocity offset at a heliocentric velocity of - 30 km s(-1). The [S II] doublet ratios indicate an electron density of similar to 1000 cm(-3) in the jet and similar to 100 cm(-3) in the H II region. With a careful subtraction of the nebular and jet components, we find the stellar H alpha line is dominated by a broad absorption profile with little or no emission component, indicating a lack of substantial circumstellar material. The circumstellar material has most likely been photoevaporated by the strong UV radiation field in the Rosette Nebula. The evaporation timescale is 10(3) - 10(4) yr. The Rosette HH 1 jet source provides evidence for an accelerated evolution from a CTTS to a WTTS due to the strong UV radiation field; therefore, both CTTSs and WTTSs can be spatially mixed in regions with massive star formation. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000245774700037 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/7229]  |
| 专题 | 国家天文台_应用天文研究部 |
| 作者单位 | 1.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 2.Univ Illinois, Dept Astron, Urbana, IL 61801 USA 3.Univ Colorado, Ctr Astrophys & Space Astron, Boulder, CO 80309 USA 4.Univ Colorado, Dept Astrophys & Planetary Sci, Boulder, CO 80309 USA |
| 推荐引用方式 GB/T 7714 | Li, Jin Zeng,Chu, You-Hua,Gruendl, Robert A.,et al. Resolving the nature of the Rosette HH 1 jet facing strong UV dissipation[J]. ASTROPHYSICAL JOURNAL,2007,659(2):1373-1381. |
| APA | Li, Jin Zeng,Chu, You-Hua,Gruendl, Robert A.,Bally, John,&Su, Wei.(2007).Resolving the nature of the Rosette HH 1 jet facing strong UV dissipation.ASTROPHYSICAL JOURNAL,659(2),1373-1381. |
| MLA | Li, Jin Zeng,et al."Resolving the nature of the Rosette HH 1 jet facing strong UV dissipation".ASTROPHYSICAL JOURNAL 659.2(2007):1373-1381. |
入库方式： OAI收割
来源：国家天文台
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。