S. Muller, J. H. Black, M. Guélin, C. Henkel, F. Combes, M. Gérin, S. Aalto, A. Beelen, J. Darling, C. Horellou, S. Martín, K. M. Menten, Dinh-V-Trung, and M. A. Zwaan,
reported on the
Detection of chloronium and measurement of the ³⁵Cl/³⁷Cl isotopic ratio at //z// = 0.89 toward PKS 1830-211
Astron. Astrophys. 566, (2014) Art. No. L6.
The 1₁₁ –0₀₀ transitions of H₂³⁵Cl⁺ and H₂³⁷Cl⁺ were observed with ALMA redshifted from about 485 GHz to about 257 GHz. The ³⁵Cl/³⁷Cl isotopic ratio agrees within error bars with the terrestrial ratio.

Contributor(s): H. S. P. Müller; 06, 2014