SIMBAD references

2014A&A...566L...6M - Astronomy and Astrophysics, volume 566L6-6 (2014/6-1)

Detection of chloronium and measurement of the 35Cl/37Cl isotopic ratio at z = 0.89 toward PKS 1830-211.

MULLER S., BLACK J.H., GUELIN M., HENKEL C., COMBES F., GERIN M., AALTO S., BEELEN A., DARLING J., HORELLOU C., MARTIN S., MENTEN K.M., DINH-V-TRUNG and ZWAAN M.A.

Abstract (from CDS):

We report the first extragalactic detection of chloronium (H2Cl+) in the z=0.89 absorber in front of the lensed blazar PKS1830-211. The ion is detected through its 111-000 line along two independent lines of sight toward the North-East and South-West images of the blazar. The relative abundance of H2Cl+ is significantly higher (by a factor ∼7) in the NE line of sight, which has a lower H2/H fraction, indicating that H2Cl+ preferably traces the diffuse gas component. From the ratio of the H235Cl+ and H237Cl+ absorptions toward the SW image, we measure a 35Cl/37Cl isotopic ratio of 3.1–0.2+0.3 at z=0.89, similar to that observed in the Galaxy and the solar system.

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Journal keyword(s): quasars: absorption lines - galaxies: ISM - galaxies: abundances - ISM: molecules - radio lines: galaxies - quasars: individual: PKS 1830-211

Simbad objects: 11

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