Discovery of a disk-collimated bipolar outflow in the proto-planetary nebula IRAS 17106-3046

Sun Kwok, Bruce J. Hrivnak, Kate Y.L. Su

Research output: Contribution to journalArticlepeer-review

30 Scopus citations


We report the discovery of a collimated bipolar outflow emerging from a visible disk around the proto-planetary nebula IRAS 17106-3046. The radius of the disk, estimated to be 2500 AU at a distance of 4 kpc, is too large for it to be a Keplerian disk created by accretion. The radial intensity profile of the disk suggests that it is consistent with an expanding torus. In contrast to the open-end, butterfly-like lobes commonly seen in bipolar planetary nebulae, the lobes of IRAS 17106-3046 have pointed ends, suggesting a recently formed jet breaking out of the lobes. IRAS 17106-3046 therefore could represent the earliest stage of the bipolar-shaping process during the transition from an asymptotic giant branch star to a planetary nebula.

Original languageEnglish (US)
Pages (from-to)L149-L152
JournalAstrophysical Journal
Issue number2 PART 2
StatePublished - Dec 1 2000
Externally publishedYes


  • ISM: jets and outflows
  • Planetary nebulae: general
  • Stars: AGB and post-AGB
  • Stars: mass loss
  • Stars: winds, outflows

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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