Bipolar Gas Jets in Star-Forming Regions

Characteristics of bipolar jet outflows of gas from star formation as studied with mm-wave telescopes are described. The bipolar structure features two emission lobes separated by a dark zone that obscures the light source, which is visible in the IR. Low mass, low luminosity new stars produce only reflection nebulae, while high mass, high luminosity new stars can emit in the UV, ionizing the surrounding gas and causing it to glow in the visible. VLA studies of S106 have indicated the presence of a dense, unionized disk and a stellar wind. The behavior of bipolar jet young stars can be mimicked by younger stars which cannot be detected with IR telescopes. Molecular outflows are observed with redshifts and blue shifts that signal both approach and recession in the same outflow. It is suggested that a one mm telescope with resolution in the 1 arcsec range would be capable of imaging the birth of planets.