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Fig. 2


Color scales in the left panels present the 0th moment (bottom, integrated intensity) and 1st moment (top, intensity weighted velocity) maps of the HCN(4–3)v2 = 1 emission. In the middle and right panels, the color-scale shows the 0th and 1st moment maps (bottom and top, respectively) of CH3OH(151,14−150,15). Black contours in all panels outline the dust continuum emission (Fig. 1) starting at the 3σ level and continuing in 2σ steps. The blue and red contours in the right panel show the blue- and red-shifted HCO+(4−3) emission integrated over the velocity regimes written above the panel. Contouring is done from 10 to 90% of the respective peak emission. The white triangles present the additional maser positions by Minier et al. (2000), and a beam and scale bar are presented as well. The CH3OH 1st moment map also marks the axis along which the position-velocity cuts in Fig. 4 are conducted.

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