Observations of an expanding molecular ring in S106

Robert Loushin, Richard M. Crutcher, John H Bieging

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

We have mapped the 3 mm rotational transition of HCO+ toward S106 with the Berkeley-Illinois-Maryland Array and the NRAO 12 m telescope. The maps show evidence for an expanding molecular ring around IRS 4, the exciting star in S106. The radius of the ring is about 2 × 1017 cm, and its mass is ≤ 10 M. The ring is expanding with a velocity of about 2 km s-1. The ring cannot be supported by rotation; magnetic fields and gas pressure may be important in determining the kinematics of the region. We also observe clumps of high-velocity material which may have been ablated from the ring and entrained in the ionized bipolar outflow.

Original languageEnglish (US)
JournalAstrophysical Journal
Volume362
Issue number2 PART 2
StatePublished - Oct 20 1990

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rings
outflow
kinematics
magnetic field
Indian spacecraft
gas
clumps
gas pressure
telescopes
stars
radii
magnetic fields
material

Keywords

  • Interstellar: matter
  • Nebulae: individual (S106)
  • Stars: formation

ASJC Scopus subject areas

  • Space and Planetary Science

Cite this

Observations of an expanding molecular ring in S106. / Loushin, Robert; Crutcher, Richard M.; Bieging, John H.

In: Astrophysical Journal, Vol. 362, No. 2 PART 2, 20.10.1990.

Research output: Contribution to journalArticle

Loushin, R, Crutcher, RM & Bieging, JH 1990, 'Observations of an expanding molecular ring in S106', Astrophysical Journal, vol. 362, no. 2 PART 2.
Loushin, Robert ; Crutcher, Richard M. ; Bieging, John H. / Observations of an expanding molecular ring in S106. In: Astrophysical Journal. 1990 ; Vol. 362, No. 2 PART 2.
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