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A THERMAL RADIO JET ASSOCIATED WITH THE QUADRUPOLAR MOLECULAR OUTFLOW IN L723

机译:L723中与四核分子流出物相关的热辐射射流

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摘要

We have carried out VLA observations at subarcsecond resolution of the two radio continuum sources detected previously at lower angular resolution toward the center of the quadrupolar molecular outflow in L723. While the source VLA 1 appears unresolved at our angular resolution of ~0″.3, the source VLA 2 appears as clearly elongated approximately along the direction of the larger pair of lobes of the molecular outflow. This alignment, and the flux density and deconvolved angular size dependences with frequency observed between 3.6 and 6 cm, are consistent with VLA 2 being a thermal radio jet and suggest that this source is related to the excitation of the larger pair of outflow lobes. Under this interpretation, the second, more compact lobe pair most probably constitutes an independent bipolar outflow, whose exciting source is still to be determined.
机译:我们已经对两个无线电连续体源进行了亚秒级分辨率的VLA观测,先前以较低的角分辨率朝向L723中的四极分子流出中心检测到了这两个无线电连续体源。当源VLA 1在〜0''。3的角分辨率下似乎无法分辨时,源VLA 2似乎明显沿着分子流出的较大一对波瓣的方向拉长。这种对准以及在3.6和6 cm之间观察到的频率对通量密度和反卷积的角度大小的依赖性,与VLA 2是热射流一致,表明该源与较大的一对流出瓣的激发有关。根据这种解释,第二个更紧凑的波瓣对很可能构成了独立的双极流出,其激振源仍有待确定。

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