Sensitive OH observations towards 16 supernova remnants

Astronomy and Astrophysics – Astronomy

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Hydroxyl Emission, Line Spectra, Molecular Clouds, Radio Telescopes, Supernova Remnants, Radio Astronomy, Space Observations (From Earth)

Scientific paper

Sensitive observations made toward 16 supernova remnants in the 1.667-GHz OH line with the DRAO 26-m radio telescope are presented. These observations were made in a search for broad, asymmetric absorption features, such as that seen toward G189.1 + 3.0 (IC443), in order to identify remnants which are interacting with molecular clouds and producing shock-excited species. Absorption by shocked OH is indicated in the cases of G33.6 + 0.1 and G84.2 - 0.8. Useful constraints on distances to several remnants are also derived.

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