赫歇尔望远镜对Sgr B2(M)中氘代水的观测
星系天体物理
2015-05-19 v1
摘要
对HDO的观测是水研究的重要补充，因为它们对形成过程——即颗粒表面过程与气相中的高能过程（例如激波）——给出了强有力的约束。本文展示的HIFI对Sgr~B2(M)中HDO多条跃迁的观测，使得能够确定整个包层中的HDO丰度，这是以前仅靠地面观测无法做到的。丰度结构已使用球形蒙特卡洛辐射传输代码RATRAN进行建模，该代码也考虑了来自尘埃的连续谱发射的辐射抽运。模型揭示，HDO的丰度随温度急剧上升：在外包层温度低于100~K时丰度较低（），在内包层/外核温度介于100和200~K之间时丰度中等（），最后在热核温度高于200~K时丰度较高（）。
引用
@article{arxiv.1007.5128,
title = {Herschel observations of deuterated water towards Sgr B2(M)},
author = {Claudia Comito and Peter Schilke and Rainer Rolffs and D. C. Lis and A. Belloche and E. A. Bergin and T. G. Phillips and T. A. Bell and N. R. Crockett and S. Wang and G. A. Blake and E. Caux and C. Ceccarelli and J. Cernicharo and F. Daniel and M. -L. Dubernet and M. Emprechtinger and P. Encrenaz and M. Gerin and T. F. Giesen and J. R. Goicoechea and P. F. Goldsmith and H. Gupta and E. Herbst and C. Joblin and D. Johnstone and W. D. Langer and W. D. Latter and S. D. Lord and S. Maret and P. G. Martin and G. J. Melnick and K. M. Menten and P. Morris and H. S. P. Mueller and J. A. Murphy and D. A. Neufeld and V. Ossenkopf and J. C. Pearson and M. Perault and R. Plume and S. -L. Qin and S. Schlemmer and J. Stutzki and N. Trappe and F. F. S. van der Tak and C. Vastel and H. W. Yorke and S. Yu and M. Olberg and R. Szczerba and B. Larsson and R. Liseau and R. H. Lin and L. A. Samoska and E. Schlecht},
journal= {arXiv preprint arXiv:1007.5128},
year = {2015}
}
备注
A&A HIFI special issue, accepted