Observations of the dense gas in the IRAS 16293-2422 outflow system

Christopher K. Walker, John E. Carlstrom, John H. Bieging, Charles J. Lada, Erick T. Young

Research output: Contribution to journalArticlepeer-review

26 Scopus citations


We present millimeter-wave interferometric and single-dish observations of IRAS 16293-2422 in the CS J = 2 → 1 line. The images reveal clumpy, shell-like structures which appear to be limb-brightened emission from dense gas at the perimeter of the molecular outflow observed in CO. These structures may be ambient cloud material swept up by a stellar wind into dense shells. At all velocities where CS is detected, features related to the outflow are observed. Most of the mass of the outflow system is contained in low-velocity shells.

Original languageEnglish (US)
Pages (from-to)173-177
Number of pages5
JournalAstrophysical Journal
Issue number1
StatePublished - Nov 20 1990


  • Interstellar: molecules
  • Nebulae: internal motions

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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