EDP Sciences
Free Access
Volume 582, October 2015
Article Number L4
Number of page(s) 5
Section Letters
DOI https://doi.org/10.1051/0004-6361/201527254
Published online 07 October 2015

Online material

Appendix A: Complementary figures

thumbnail Fig. A.1

Map of the 339 GHz continuum emission of PKS 1830211 showing the two resolved lensed images of the blazar (left). Overview of the ArH+ absorption spectrum toward PKS 1830211 SW (bottom right) and NE (top right) from the current observations. Expected positions of the main absorption feature are indicated for 36ArH+, 38ArH+, and 40ArH+; the last is not detected. The noise increases toward lower frequencies because of the proximity of the atmospheric water line near 325.2 GHz.

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thumbnail Fig. A.2

Normalized correlation plot of H2O+ versus 36ArH+ toward PKS 1830211 SW, NE, and Sagittarius B2(M). The column densities of the two species have been normalized by the maximum values for each component and for each velocity channel. A perfect correlation (i.e. just a constant scaling factor between the two species) would result in clustering along the yellow line. The distributions of the two cations are poorly correlated toward the sources. The PKS 1830211 data are from this work and from Muller et al. (in prep.) for 36ArH+ and H2O+, respectively; the corresponding Sagittarius B2(M) data are from Schilke et al. (2014) and Schilke et al. (2013).

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© ESO, 2015

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