2003/06/03 by J. Eislöffel, Jochen Eisloffel, Dirk Froebrich +5 · 2 citations
Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics and Star Formation Studies #Cluster (spacecraft) #Collimated light #Hydrogen molecule #Jet (fluid) #Millimeter #Open cluster #Outflow #Stellar, planetary, and galactic studies #astro-ph
paper · pdf · doi:10.1086/377216
published as Astrophys.J. 595 (2003) 259-265 · 10 pages, 9 figures, accepted for publication in ApJ
arxiv created 2003/06/03 · openalex publication_date 2003/09/16 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We present a wide-field survey of the young open cluster IC 348 for molecular H 2 outflows. Outflow activity is only found at its southwestern limit, where a new subcluster of embedded sources is in an early phase of its formation. If the IC 348 cluster had been built up by such subclusters forming at different times, this could explain the large age-spread that Herbig (1998) found for the IC 348 member stars. In addition to several compact groups of H 2 knots, our survey reveals a large north-south oriented outflow, and we identify the newly discovered far-infrared and millimeter object IC 348 MMS as its source. New deep images in the 1-0 S (1) line of molecular hydrogen trace the HH 211 jet and counterjet as highly collimated chains of knots, resembling the interferometric CO and SiO jets. This jet system appears rotated counterclockwise by about 3° with respect to the prominent H 2 bow shocks. Furthermore, we resolve HH 211-mm as a double pointlike source in the millimeter continuum.