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The Possibly Remnant Massive Outflow in G5.89-0.39. I. Observations and Initial Magnetohydrodynamic Simulations

机译:G5.89-0.39中可能残留的大量流出。 I.观测和初始磁流体动力学模拟

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We have obtained maps of the large-scale outflow associated with the UC H II region G5.89-0.39 in CO and 13CO (J = 3-2), SiO (J = 8-7, J = 5-4), SO2 (J = 132,12-131,13),13 and H13CO+(J = 4-3). From these maps we have been able to determine the mass (3.3 M☉), momentum (96 M☉ km s-1), energy (3.5 × 1046 ergs), mechanical luminosity (141 L☉), and mass-loss rate (~ 1 × 10-3 M☉ yr-1) in the large-scale outflow. The observationally derived parameters were used to guide three-dimensional magnetohydrodynamic models of the jet-entrained outflow. Through the combination of observations and simulations, we suggest that the large-scale outflow may be inclined by approximately 45° to the line of sight, and that the jet entraining the observed molecular outflow may have been active for as little as 1000 years, half the kinematic age of the outflow.
机译:我们已经获得了与UC H II区G5.89-0.39在CO和13CO(J = 3-2),SiO(J = 8-7,J = 5-4),SO2相关的大规模流出图(J = 132,12-131,13),13和H 13 CO +(J = 4-3)。根据这些图,我们可以确定质量(3.3M☉),动量(96M☉km s-1),能量(3.5×1046 ergs),机械光度(141L☉)和质量损失率( 〜1×10-3M☉yr-1)大规模流出。观测得出的参数被用来指导射流夹带流出的三维磁流体动力学模型。通过观察和模拟的结合,我们建议大规模流出可能相对于视线倾斜约45°,并且夹带观察到的分子流出的射流可能已经活跃了1000年,一半流出的运动年龄。

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