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First astronomical detection of the CF+ ion | D. A. Neufeld
; P. Schilke
; K. M. Menten
; M. G. Wolfire
; J. H. Black
; F. Schuller
; H. Muller
; S. Thorwirth
; R. Gusten
; S. Philipp
; | Date: |
21 Sep 2005 | Subject: | astro-ph | Affiliation: | JHU), P. Schilke (MPIfR), K. M. Menten (MPIfR), M. G. Wolfire (U Md), J. H. Black (Onsala), F. Schuller (MPIfR), H. Muller (Koln), S. Thorwirth (MPIfR), R. Gusten (MPIfR), S. Philipp (MPIfR | Abstract: | We report the first astronomical detection of the CF+ (fluoromethylidynium) ion obtained by recent observations of its J = 1 - 0 (102.6 GHz), J = 2 - 1 (205.2 GHz), and J = 3 - 2 (307.7 GHz) pure rotational emissions toward the Orion Bar. Our search for CF+, carried out using the IRAM 30m and APEX 12m telescopes, was motivated by recent theoretical models that predict CF+ abundances of a few x E-10 in UV-irradiated molecular regions where C+ is present. The measurements confirm the predictions. They provide support for our current theories of interstellar fluorine chemistry, which suggest that hydrogen fluoride should be ubiquitous in interstellar gas clouds. | Source: | arXiv, astro-ph/0509634 | Services: | Forum | Review | PDF | Favorites |
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