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[13.15] Bipolar Outflow Offset from the Nucleus of M33

P.W.A. Roming (PSU), J.W. Moody, M.L. Hintz (BYU), K. Wu, R. Soria (MSSL)

Using long-slit spectra centered in wavelength about H\alpha, we have produced a velocity map of a 0.5' x 2' hourglass shaped object centered 38" southeast of the optical center of M33. The velocity resolution is 1.1 km/s. We have also produced electron temperature, electron density, and shock heating maps of the same region using the [NII](\lambda 6548), [NII](\lambda 6583), H\alpha, [SII](\lambda 6717), and [SII](\lambda 6731) lines. The data reveal that the gas is flowing away from the center of this hourglass shaped object and that the electron temperature and density of the region is relatively low. The shock heating maps indicate that very little of the gas in the region is shock heated. Using this new data and previously published UV, IR, and radio data we investigate possible scenarios that could explain this large scale, low velocity outflow.

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Bulletin of the American Astronomical Society, 34, #4
© 2002. The American Astronomical Soceity.