1999/06/03 by Amaya Moro-Martín, A. Moro-Martin, J. Cernicharo +5 · 1 citation
Physics and Astronomy · #Angular resolution (graph drawing) #Astrophysical Phenomena and Observations #Astrophysics and Cosmic Phenomena #Astrophysics and Star Formation Studies #Bipolar outflow #Flow (mathematics) #Free molecular flow #Herbig–Haro object #Jet (fluid) #Optical depth #Outflow #astro-ph
paper · pdf · doi:10.1086/312156
14 pages, 4 figures, accepted ApJLett
arxiv created 1999/06/03 · openalex publication_date 1999/08/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We present high angular resolution (12''-24'') and high-sensitivity 12 CO and 13 CO J = 2-1 and J = 1-0 observations of the HH 1-2 outflow. The observations show the molecular counterpart, moving with a velocity of ≃30 km s -1 , of the optical bipolar system driven by the VLA 1 embedded source. Along with the optical jet there are certain regions where the molecular gas reaches deprojected velocities of 100-200 km s -1 and that we interpret as the molecular jet. The bipolar CO outflow has a length of ~260'' with a curved morphology toward the north where it extends beyond the HH 1 object (≃120''). Two new molecular outflows have been detected, one arising from IRAS 05339-0647, which excites the HH 147 optical flow, and another powered by VLA 2, which drives the HH 144 optical outflow. The molecular outflow driven by the VLA 3 source is also clearly detected and spatially resolved from the VLA 1 main outflow.