Evidence for the interaction of the IRS 16 wind with the ionized and molecular gas at the Galactic center

Details Evidence for the interaction of the IRS 16 wind with the ionized and molecular gas at the Galactic center Evidence for the interaction of the IRS 16 wind with the ionized and molecular gas at the Galactic center

Mar 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...405..584y&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 405, no. 2, p. 584-590.

Other

31

Galactic Nuclei, Infrared Stars, Interstellar Gas, Milky Way Galaxy, Plasma Interactions, Stellar Winds, Disks (Shapes), Hydrodynamic Ram Effect, Hydrogen, Ionized Gases, Molecular Gases, Taylor Instability

Scientific paper

We present a number of high-resolution radio images showing evidence for the dynamical interaction of the outflow arising from the IRS 16 complex with the ionized gas associated with the Northern Arm of Sgr A West, and with the northwestern segment of the circumnuclear molecular disk which engulfs the inner few parsecs of the Galactic center. We suggest that the wind disturbs the dynamics of the Northern Arm within 0.1 pc of the center, is responsible for the waviness of the arm at larger distances, and is collimated by Sgr A West and the circumnuclear disk. The waviness is discussed in terms of the Rayleigh-Taylor instability induced by the ram pressure of the wind incident on the surface of the Northern Arm. Another consequence of this interaction is the strong mid-IR polarization of the Northern Arm in the vicinity of the IRS 16 complex which is explained as a result of the ram pressure of the wind compressing the gas and the magnetic field.

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