Further search for OH emission from IRAS sources

Details Further search for OH emission from IRAS sources Further search for OH emission from IRAS sources

Jul 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997a%26as..124...85s&link_type=abstract

A & A Supplement series, Vol. 124, July 1997, 85-108.

Astronomy and Astrophysics

Astronomy

14

Ism: Clouds, Ism: Molecules, Masers, Radio Lines: Ism, Surveys

Scientific paper

Results of a continued search for OH main line emission from IRAS sources are reported. Towards a sample of 182 sources which consists of IRAS sources selected by the colour criterion for ultracompact HII region, and several IRAS cores, H_2O masers and bipolar outflows, we detected 19 new OH masers of Class I and 5 OH/IR candidates. The correlation between IR and OH maser flux is confirmed. Also 51 thermal and 4 absorption sources were detected. The low radial velocities and derived OH column densities suggest that the thermal OH emission comes from nearby dark clouds. There is evidence that IRAS sources towards which thermal emission was detected are connected with these dark clouds.

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