High-velocity molecular gas in the dark cloud L1529

High-velocity CO wings have been detected near a dense condensation in the dark cloud L1529. Embedded stars or young stellar objects nearby have been identified as likely energy sources responsible for the unusual velocity dispersion (30 km s-1) in the wings; these objects may also be responsible for the more moderate, yet still supersonic velocity dispersion (2--3 km s-1) typical of the CO line cores. The observations of CO and high-excitation molecules in L1529 are consistent with cloud models in which stellar winds play a major role in the energetics and internal kinematics of dark clouds