New detections of 6.6-GHz 5(1)-6(0) A(+)-methanol emission towards southern hydroxyl masers

Astronomy and Astrophysics – Astronomy

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Hydroxyl Emission, Interstellar Masers, Interstellar Matter, Methyl Alcohol, Star Formation, Cosmic Dust, Galactic Structure, H Ii Regions

Scientific paper

Southern star-forming regions identified by the presence of 1.6-GHz hydroxyl masers have been searched for the presence of methanol using the 6.6-GHz 5(1)-6(0) A(+)-methanol transition. Eighteen masers are detected from a sample of 62 sources, and methanol is seen in absorption towards two positions. Four of the detections are located in the far side of the Carina spiral arm. The 3 sigma detection limit in the search was 1.5 Jy.

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