Orion Bar区首次氨(NH3)检测
天体物理学
2009-11-07 v1
摘要
Odin成功观测了Orion A云中的三个区域，即Ori KL、Ori S以及Orion Bar区，观测了氨的旋转基态线(572.5 GHz)，正构氨(NH3, J,K) = (1,0) -> (0,0)。其中Orion Bar区的结果是该氨线的首次检测。数据中存在多个速度分量。具体而言，Orion Bar区观测到的线轮廓可分解为两个分量，这与Wilson等人2001年在高J CO线观测结果一致。利用这些作者对Orion Bar区的源模型，我们的Odin观测表明总氨浓度为NH3/H2 = 5E-9。
引用
@article{arxiv.astro-ph/0303122,
title = {First NH3 detection of the Orion Bar},
author = {B. Larsson and R. Liseau and P. Bergman and P. Bernath and J. H. Black and R. S. Booth and V. Buat and C. L. Curry and P. Encrenaz and E. Falgarone and P. Feldman and M. Fich and H. G. Flore'n and U. Frisk and M. Gerin and E. M. Gregersen and J. Harju and T. Hasegawa and L. E. B. Johansson and S. Kwok and A. Lecacheux and T. Liljestrom and K. Mattila and G. F. Mitchell and L. H. Nordh and M. Olberg and G. Olofsson and L. Pagani and R. Plume and I. Ristorcelli and Aa. Sandqvist and F. v. Sche'ele and N. F. H. Tothill and K. Volk and C. D. Wilson and A. Hjalmarson},
journal= {arXiv preprint arXiv:astro-ph/0303122},
year = {2009}
}
备注
4 pages with 2 figures, accepted for publication in A&A