S. Muller, K. Kawaguchi, J. H. Black, and T. Amano,
reported on the
Detection of Extragalactic CF+ toward PKS 1830211 Chemical Differentiation in the Absorbing Gas
Astron. Astrophys. 589, (2016) Art. No. L5.
The J = 2 1 transition of CF+ (rest frequency 205.2 GHz) was observed in absorption in the z = 0.89 foreground galaxy toward the quasar PKS 1830211. The Atacama Large Millimeter Array (ALMA) was used in its Early Science Cycle 2 phase.