Herschel/HIFI对星际氯鎓离子(H$_2$Cl$^+$)的发现
星系天体物理
2016-08-14 v1
摘要
我们利用\emph{Herschel}空间天文台上的HIFI仪器，报告了在星际介质中首次探测到氯鎓离子，HCl。在朝向NGC~6334I的方向上，探测到了ortho-HCl和ortho-HCl的谱线的吸收，而在朝向NGC~6334I和Sgr~B2(S)的方向上，探测到了para-HCl的跃迁的吸收。我们将HCl的柱密度与化学相关物种HCl的柱密度进行了比较。推导出的HCl/HCl柱密度比在1--10范围内，处于漫射和致密光子主导区(PDRs)模型的预测范围内。然而，观测到的HCl柱密度超过~cm，显著高于模型预测。我们的观测证明了HIFI在探测新星际分子和为天体化学模型提供关键约束方面具有卓越的光谱能力。
引用
@article{arxiv.1007.1461,
title = {Herschel/HIFI discovery of interstellar chloronium (H$_2$Cl$^+$)},
author = {D. C. Lis and J. C. Pearson and D. A. Neufeld and P. Schilke and H. S. P. Müller and H. Gupta and T. A. Bell and C. Comito and T. G. Phillips and E. A. Bergin and C. Ceccarelli and P. F. Goldsmith and G. A. Blake and A. Bacmann and A. Baudry and M. Benedettini and A. Benz and J. Black and A. Boogert and S. Bottinelli and S. Cabrit and P. Caselli and A. Castets and E. Caux and J. Cernicharo and C. Codella and A. Coutens and N. Crimier and N. R. Crockett and F. Daniel and K. Demyk and C. Dominic and M. -L. Dubernet and M. Emprechtinger and P. Encrenaz and E. Falgarone and A. Fuente and M. Gerin and T. F. Giesen and J. R. Goicoechea and F. Helmich and P. Hennebelle and Th. Henning and E. Herbst and P. Hily-Blant and Å. Hjalmarson and D. Hollenbach and T. Jack and C. Joblin and D. Johnstone and C. Kahane and M. Kama and M. Kaufman and A. Klotz and W. D. Langer and B. Larsson and J. Le Bourlot and B. Lefloch and F. Le Petit and D. Li and R. Liseau and S. D. Lord and A. Lorenzani and S. Maret and P. G. Martin and G. J. Melnick and K. M. Menten and P. Morris and J. A. Murphy and Z. Nagy and B. Nisini and V. Ossenkopf and S. Pacheco and L. Pagani and B. Parise and M. Pérault and R. Plume and S. -L. Qin and E. Roueff and M. Salez and A. Sandqvist and P. Saraceno and S. Schlemmer and K. Schuster and R. Snell and J. Stutzki and A. Tielens and N. Trappe and F. F. S. van der Tak and M. H. D. van der Wiel and E. van Dishoeck and C. Vastel and S. Viti and V. Wakelam and A. Walters and S. Wang and F. Wyrowski and H. W. Yorke and S. Yu and J. Zmuidzinas and Y. Delorme and J. -P. Desbat and R. Güsten and J. -M. Krieg and B. Delforge},
journal= {arXiv preprint arXiv:1007.1461},
year = {2016}
}
备注
Accepted for publication in A&A, HIFI Special Issue; 4 pages, 2 figures, 1 table