Survey of Molecular Emission Lines in the WB 673 Interstellar Filament

We report observations of molecular line emission toward dense clumps of the WB 673 interstellar filament: WB 668, WB 673, S233–IR, and G173.57+2.43. The observations were done with the 20-m telescope at the Onsala Space Observatory (Sweden). Maps of emission, column densities, and relative abundances of CO, N2H $$^{ + }$$ , CS, HCN, and HNC molecules are presented. It was found that the molecular abundances decrease toward the peaks of molecular hydrogen column densities in the clumps.