The H II region-molecular cloud complex W3 - Observations of CO, CS, and HCN

Abstract

view Abstract Citations (59) References (52) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The H II region-molecular cloud complex W3: observations of CO, CS, and HCN. Dickel, H. R. ; Dickel, J. R. ; Wilson, W. J. ; Werner, M. W. Abstract The distributions of the emission from (C-12)O, (C-13)O, CS, and HCN have been mapped in the W3 molecular cloud. The emission is divided into three components according to the spatial distribution of the intensity and the associated velocity. Although the overall cloud is investigated, the emphasis is on the brightest condensation referred to as the W3 core. This dense and dynamically active region contains several embedded compact H II regions, IR sources, and masers. Strong (C-12)O self-absorption occurs toward the compact infrared source IRS 5 where emission from dust at 1 mm and in the far-infrared and the emission from (C-13)O and HCN are strongest, but the emission from CS, by contrast, is rather weak. Collapse of the W3 core is inferred from the line profiles. A velocity gradient is observed across the W3 core. Publication: The Astrophysical Journal Pub Date: May 1980 DOI: 10.1086/157919 Bibcode: 1980ApJ...237..711D Keywords: H Ii Regions; Infrared Astronomy; Interstellar Gas; Molecular Gases; Nebulae; Radio Astronomy; Abundance; Astronomical Photography; Carbon Monoxide; Hydrocyanic Acid; Radial Velocity; Spatial Distribution; Sulfides; Tables (Data); Velocity Distribution; Astrophysics full text sources ADS | data products SIMBAD (6)