CO J = 2-1 observations of the NGC 2071 molecular outflow - A wind-driven shell

Journal Article · Fri Dec 01 04:00:00 EST 1989 · Astrophysical Journal; (USA)

DOI:https://doi.org/10.1086/168124· OSTI ID:7058348

Moriarty-Schieven, G H; Hughes, V A; Snell, R L ^[1]

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1. Queen's Univ., Kingston (Canada) Five College Radio Astronomy Observatory, Amherst, MA (USA)

Complete maps of the high-velocity (C-12)O J = 2-1 emission from the NGC 2071 bipolar molecular outflow are presented. The molecular outflow has a closed shell morphology similar to L1551 but is much more inclined out of the plane of the sky. Despite being driven by a source an order of magnitude more luminous than L1551, the molecular outflow is only moderately more massive, and its momentum and energy are very similar. The NGC 2071 outflow has a number of large-velocity-dispersion clumps, one of which may be where a stellar wind jet impacts the end wall of the lobe cavity. Two others, coincident with an H2O maser and dense high-velocity gas, may be fragments of circumstellar material which has become entrained in the stellar wind. It is believed that the morphology of molecular outflows is well understood by a model of an expanding molecular shell driven by a stellar wind, and that differences in the velocity structure, collimation, and lobe overlap of a wide variety of outflows may be largely due to the inclination angle in which the outflow is viewed. 41 refs.

• OSTI ID: 7058348
• Journal Information: Astrophysical Journal; (USA), Journal Name: Astrophysical Journal; (USA) Vol. 347; ISSN ASJOA; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AMPLIFIERS
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
ELECTRONIC EQUIPMENT
EMISSION SPECTRA
EQUIPMENT
FLUID FLOW
GAS FLOW
HYDROGEN COMPOUNDS
INTERSTELLAR SPACE
LUMINOSITY
MASERS
MICROWAVE AMPLIFIERS
MICROWAVE EQUIPMENT
MOLECULES
NEBULAE
OPTICAL PROPERTIES
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SPACE
SPECTRA
SPECTROSCOPY
STELLAR ACTIVITY
STELLAR WINDS
WATER