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arXiv · 1604.00414

Detection of extragalactic CF+ toward PKS1830-211 -- Chemical differentiation in the absorbing gas

S. Muller·K. Kawaguchi·J. H. Black·T. Amano
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Abstract

We report the first extragalactic detection of CF+, the fluoromethylidynium ion, in the z=0.89 absorber toward PKS1830-211. We estimate an abundance of ~3E-10 relative to H2 and that ~1% of fluorine is captured in CF+. The absorption line profile of CF+ is found to be markedly different from that of other species observed within the same tuning, and is notably anti-correlated with CH3OH. On the other hand, the CF+ profile resembles that of [C I]. Our results are consistent with expected fluorine chemistry and point to chemical differentiation in the column of absorbing gas.

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S. Muller, K. Kawaguchi, J. H. Black, T. Amano. 2016-04-01. Detection of extragalactic CF+ toward PKS1830-211 -- Chemical differentiation in the absorbing gas. https://doi.org/10.1051/0004-6361%2F201628494

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