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arXiv 1005.2874astro-ph.GA
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DR21分子云核的Herschel-SPIRE光谱

Herschel-SPIRE spectroscopy of the DR21 molecular cloud core

Glenn J. White, A. Abergel, L. Spencer, N. Schneider, D. A. Naylor, L. D. Anderson, C. Joblin, P. Ade, P. André, H. Arab, J. -P. Baluteau, J. -P. Bernard, K. Bl… 展开作者

Glenn J. White, A. Abergel, L. Spencer, N. Schneider, D. A. Naylor, L. D. Anderson, C. Joblin, P. Ade, P. André, H. Arab, J. -P. Baluteau, J. -P. Bernard, K. Blagrave, S. Bontemps, F. Boulanger, M. Cohen, M. Compiegne, P. Cox, E. Dartois, G. Davis, R. Emery, T. Fulton, B. Gom, M. Griffin, C. Gry, E. Habart, M. Huang, S. Jones, J. M. Kirk, G. Lagache, S. Leeks, T. Lim, S. Madden, G. Makiwa, P. Martin, M. -A. Miville-Deschênes, S. Molinari, H. Moseley, F. Motte, K. Okumura, D. Pinheiro Gocalvez, E. Polehampton, T. Rodet, J. A. Rodón, D. Russeil, P. Saraceno, S. Sidher, B. M. Swinyard, D. Ward-Thompson, A. Zavagno

摘要:

我们目前的远红外光谱和地图的DR 21分子云核心之间的196和671微米,使用赫歇尔-SPIRE光谱仪。记录了19条来自CO、13 CO、HCO+和H2O的分子谱线,以及[N II]和[CI]谱线,包括以前未检测到的几个跃迁。CO谱线是在Tkin ~ 125 K、nH 2 ~ 7 x 10^4 cm-3、CO柱密度N(CO)~ 3.5 x 10^18 cm^-2和填充因子~ 12%的暖气体中激发的,似乎是与外流有关的示踪气体。结合地面望远镜观测结果的旋转温度分析揭示了另外一个较低激发态的CO组分,其温度约为78 K,N(CO)约为4.5 x 10^21 cm^-2。天文学和天体物理学赫歇尔特刊,印刷中。

英文摘要:

We present far-infrared spectra and maps of the DR21 molecular cloud core between 196 and 671 microns, using the Herschel-SPIRE spectrometer. Nineteen molecular lines originating from CO, 13CO, HCO+ and H2O, plus lines of [N II] and [CI] were recorded, including several transitions not previously detected. The CO lines are excited in warm gas with Tkin ~ 125 K and nH2 ~ 7 x 10^4 cm-3, CO column density N(CO) ~ 3.5 x 10^18 cm^-2 and a filling factor of ~ 12%, and appear to trace gas associated with an outflow. The rotational temperature analysis incorporating observations from ground-based telescopes reveals an additional lower excitation CO compoment which has a temperature ~ 78 K and N(CO) ~ 4.5 x 10^21 cm^-2. Astronomy & Astrophysics HERSCHEL special Issue, in press.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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