The chemistry of ions in the Orion Bar I. – CH+, SH+, and CF+ - The effect of high electron density and vibrationally excited H2 in a warm PDR surface

Z. Nagy; F. F. S. Van der Tak; V. Ossenkopf; M. Gerin; F. Le Petit; J. Le Bourlot; J. H. Black; J. R. Goicoechea; C. Joblin; M. Röllig; E. A. Bergin

doi:10.1051/0004-6361/201220519

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Volume 550 (February 2013)

A&A, 550 (2013) A96

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Fig. 2

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Top panel: line profiles of CH⁺ 2−1 and 1−0 transitions corresponding to the average of H- and V-polarizations observed with Herschel/HIFI toward the CO⁺ peak in the Orion Bar. Bottom panel: line profiles of C⁺ and CO 16–15, for comparison, observed with Herschel/HIFI toward the CO⁺ peak in the Orion Bar.

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