High-resolution CO observations of young low-mass stars

Through the use of the Owens Valley Millimeter Interferometer, CO(1-0) emission near very young low-mass stars was observed. The data consist of a snapshot visibility survey of 25 low-luminosity IRAS sources associated with dense molecular cores and full aperture synthesis maps of two cores, L1262 and L1681B. The two sources mapped show spatially compact low-velocity outflows. The momentum flux in the compact outflows is comparable to that powering larger scale low-luminosity outflows. Extrapolating from the results of the snapshot survey, at least 64 percent and perhaps all dense cores with embedded infrared sources have outflows. L1681B contains an unresolved source with velocity extent and emission asymmetries which are consistent with gravitational infall. 24 refs