Detection of extragalactic CF+ toward PKS 1830-211 Chemical differentiation in the absorbing gas
Journal article, 2016

We report the first extragalactic detection of the fluoromethylidynium ion CF+ in the z = 0.89 absorber toward PKS 1830-211. We estimate an abundance of similar to 3 x 10(-10) relative to H-2 and that similar to 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 anticorrelated with CH3OH. On the other hand, the CF+ profile resembles that of [CI]. Our results are consistent with expected fluorine chemistry and point to chemical differentiation in the column of absorbing gas.

ISM: molecules

galaxies: ISM

quasars: absorption lines

quasars: individual: PKS1830-211

radio lines: galaxies

galaxies: abundances


Sebastien Muller

Chalmers, Earth and Space Sciences, Onsala Space Observatory

K. Kawaguchi

Okayama University

John H Black

Chalmers, Earth and Space Sciences, Radio Astronomy and Astrophysics

T. Amano

University of Waterloo

Astronomy and Astrophysics

0004-6361 (ISSN) 1432-0746 (eISSN)

Vol. 589 Art. no. L5- L5

Subject Categories

Astronomy, Astrophysics and Cosmology


Basic sciences



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