A near-infrared study of the star-forming region S269
文献类型：期刊论文
| 作者 | Jiang, ZB ; Yao, YQ; Yang, J; Baba, D; Kato, D; Kurita, M; Nagashima, C; Nagata, T; Nagayama, T; Nakajima, Y
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| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2003-10-20 |
| 卷号 | 596期号:2页码:1064-1079 |
| 关键词 | HII regions infrared : ISM ISM : individual (S269) ISM : lines and bands stars : formation |
| ISSN号 | 0004-637X |
| 英文摘要 | The star-forming region S269 is studied with deep JHK(s) and H(2)v = 1-0 S(1) images and K-band spectroscopy. The JHK(s) images reveal a rich embedded cluster at the center of the field; most stars in the cluster are located in two major congregations. The colors of the two congregations and of the associated nebulosities are quite different. The color-color diagrams and color-magnitude diagrams of the two subgroups show that their intrinsic colors are not significantly different, suggesting that they could be formed at a similar age. Between the subgroups there are two near-infrared sources, IRS 2e and 2w. Their K-band spectra rise toward longer wavelengths, indicative of a dense dusty envelope surrounding them. Strong H(2) and Brgamma lines are detected on these two objects. A poorly collimated bipolar H2 jet has been detected around IRS 2e and 2w. The morphology of the infrared jet and K-band spectra of the two infrared sources suggest that the jet is likely driven by IRS 2e or 2w, or both. Several lines of evidence suggest that IRS 2e and 2w are massive young stellar objects probably younger than most of the stars in the region. Given the facts above, we speculate that lower mass star-forming activities in a stellar cluster could play an important role in the formation of a massive star. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | H-II-REGIONS ; YOUNG STELLAR OBJECTS ; IRAS POINT SOURCES ; HII-REGIONS ; OH SOURCES ; SPECTROSCOPY ; EXTINCTION ; GALAXY ; MASS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000185916000025 |
| 公开日期 | 2012-08-08 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/4578]  |
| 专题 | 紫金山天文台_分子云与恒星形成研究团组 |
| 作者单位 | 1.Chinese Acad Sci, Natl Astron Observ, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China 2.Nagoya Univ, Sch Sci, Dept Astrophys, Chikusa Ku, Nagoya, Aichi 4648602, Japan 3.Natl Astron Observ Japan, Opt & Infrared Astron Div, Mitaka, Tokyo 1818588, Japan 4.Nagoya City Univ, Inst Nat Sci, Nagoya, Aichi 4678501, Japan |
| 推荐引用方式 GB/T 7714 | Jiang, ZB,Yao, YQ,Yang, J,et al. A near-infrared study of the star-forming region S269[J]. ASTROPHYSICAL JOURNAL,2003,596(2):1064-1079. |
| APA | Jiang, ZB.,Yao, YQ.,Yang, J.,Baba, D.,Kato, D.,...&Sugitani, K.(2003).A near-infrared study of the star-forming region S269.ASTROPHYSICAL JOURNAL,596(2),1064-1079. |
| MLA | Jiang, ZB,et al."A near-infrared study of the star-forming region S269".ASTROPHYSICAL JOURNAL 596.2(2003):1064-1079. |
入库方式： OAI收割
来源：紫金山天文台
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