Research report 2010 - Max Planck Institute for Radio Astronomy

APEX telescope observations of new molecular ions

Wyrowski, Friedrich; Menten, Karl; Güsten, Rolf; Belloche, Arnaud
Max-Planck-Institut für Radioastronomie, Bonn
Hydrides are key ingredients of interstellar chemistry since they are the initial products of chemical networks that lead to the formation of more complex molecules. Using the APEX telescope, we observed the long sought hydrides SH+ and OH+ in absorption against the strong continuum source Sagittarius B2(M). The observations show that these hydrides are abundant in diffuse clouds. We used the strongest submillimeter dust continuum sources in the inner galaxy to serve as background to conduct a systematic census of these hydrides in diffuse clouds and massive star forming regions of our galaxy.

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