A 100 pc ELLIPTICAL AND TWISTED RING OF COLD AND DENSE MOLECULAR CLOUDS REVEALED BY HERSCHEL AROUND THE GALACTIC CENTER
文献类型：期刊论文
| 作者 | Molinari, S.1; Bally, J.2; Noriega-Crespo, A.3; Compiegne, M.3; Bernard, J. P.4,5; Paradis, D.4; Martin, P.6; Testi, L.7,8; Barlow, M.9; Moore, T.10 |
| 刊名 | ASTROPHYSICAL JOURNAL LETTERS
 |
| 出版日期 | 2011-07-10 |
| 卷号 | 735期号:2 |
| 关键词 | Galaxy: center ISM: clouds stars: formation |
| 英文摘要 | Thermal images of cold dust in the Central Molecular Zone of the Milky Way, obtained with the far-infrared cameras on board the Herschel satellite, reveal a similar to 3 x 10(7) M-circle dot ring of dense and cold clouds orbiting the Galactic center. Using a simple toy model, an elliptical shape having semi-major axes of 100 and 60 pc is deduced. The major axis of this 100 pc ring is inclined by about 40 degrees with respect to the plane of the sky and is oriented perpendicular to the major axes of the Galactic Bar. The 100 pc ring appears to trace the system of stable x(2) orbits predicted for the barred Galactic potential. Sgr A* is displaced with respect to the geometrical center of symmetry of the ring. The ring is twisted and its morphology suggests a flattening ratio of 2 for the Galactic potential, which is in good agreement with the bulge flattening ratio derived from the 2MASS data. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000293138000009 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/8024]  |
| 专题 | 国家天文台_应用天文研究部 |
| 作者单位 | 1.INAF Ist Fis Spazio Interplanetario, I-00133 Rome, Italy 2.Univ Colorado, Ctr Astrophys & Space Astron, Boulder, CO 80309 USA 3.CALTECH, Spitzer Sci Ctr, Pasadena, CA 91125 USA 4.IRAP, CNRS, F-31028 Toulouse 4, France 5.Univ Toulouse, UPS OMP, IRAP, F-31028 Toulouse 4, France 6.Univ Toronto, Dept Astron & Astrophys, Toronto, ON M5S 1A1, Canada 7.European So Observ, D-85748 Garching, Germany 8.INAF Osservatorio Astrofis Arcetri, I-50125 Florence, Italy 9.UCL, Dept Phys & Astron, London, England 10.Liverpool John Moores Univ, Astrophys Res Inst, Liverpool L3 5UX, Merseyside, England |
| 推荐引用方式 GB/T 7714 | Molinari, S.,Bally, J.,Noriega-Crespo, A.,et al. A 100 pc ELLIPTICAL AND TWISTED RING OF COLD AND DENSE MOLECULAR CLOUDS REVEALED BY HERSCHEL AROUND THE GALACTIC CENTER[J]. ASTROPHYSICAL JOURNAL LETTERS,2011,735(2). |
| APA | Molinari, S..,Bally, J..,Noriega-Crespo, A..,Compiegne, M..,Bernard, J. P..,...&Umana, G..(2011).A 100 pc ELLIPTICAL AND TWISTED RING OF COLD AND DENSE MOLECULAR CLOUDS REVEALED BY HERSCHEL AROUND THE GALACTIC CENTER.ASTROPHYSICAL JOURNAL LETTERS,735(2). |
| MLA | Molinari, S.,et al."A 100 pc ELLIPTICAL AND TWISTED RING OF COLD AND DENSE MOLECULAR CLOUDS REVEALED BY HERSCHEL AROUND THE GALACTIC CENTER".ASTROPHYSICAL JOURNAL LETTERS 735.2(2011). |
入库方式： OAI收割
来源：国家天文台
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