DR21分子云核的Herschel-SPIRE光谱研究
星系天体物理
2015-05-19 v1
摘要
我们利用Herschel-SPIRE光谱仪展示了DR21分子云核在196至671微米之间的远红外光谱和图像。记录了来自CO、13CO、HCO+和H2O的19条分子谱线，以及[N II]和[CI]谱线，其中包括若干此前未被探测到的跃迁。CO谱线在Tkin ~ 125 K、nH2 ~ 7 x 10^4 cm^-3、CO柱密度N(CO) ~ 3.5 x 10^18 cm^-2且填充因子约12%的温暖气体中被激发，并且似乎示踪了与一个外流相关的气体。结合地面望远镜观测数据的转动温度分析揭示了一个额外的低激发CO成分，其温度约为78 K，N(CO) ~ 4.5 x 10^21 cm^-2。即将发表于《天文学与天体物理学》Herschel特刊。
引用
@article{arxiv.1005.2874,
title = {Herschel-SPIRE spectroscopy of the DR21 molecular cloud core},
author = {Glenn J. White and A. Abergel and L. Spencer and N. Schneider and D. A. Naylor and L. D. Anderson and C. Joblin and P. Ade and P. André and H. Arab and J. -P. Baluteau and J. -P. Bernard and K. Blagrave and S. Bontemps and F. Boulanger and M. Cohen and M. Compiegne and P. Cox and E. Dartois and G. Davis and R. Emery and T. Fulton and B. Gom and M. Griffin and C. Gry and E. Habart and M. Huang and S. Jones and J. M. Kirk and G. Lagache and S. Leeks and T. Lim and S. Madden and G. Makiwa and P. Martin and M. -A. Miville-Deschênes and S. Molinari and H. Moseley and F. Motte and K. Okumura and D. Pinheiro Gocalvez and E. Polehampton and T. Rodet and J. A. Rodón and D. Russeil and P. Saraceno and S. Sidher and B. M. Swinyard and D. Ward-Thompson and A. Zavagno},
journal= {arXiv preprint arXiv:1005.2874},
year = {2015}
}
备注
5 pages, 6 figures