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He 3-1475 AND ITS JETS

机译:他3-1475和它的射箭

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摘要

We present spectra and high-resolution images taken with the Hubble Space Telescope (HST), the NTT, the VLA, and the MPIA/ESO 2.2 m telescope of the emission-line star He 3-1475, which we suggest is a post-asymptotic giant branch star. The star is presumed to be at the origin of a 15″ long structure containing symmetrically opposing bright knots. The knots have radial velocities of ± 500 km s~(-1) from the center of He 3-1475 to the ends of the jets. HST snapshots show that the core of He 3-1475 is unipolar with a star at the SE end and the nebula fanning out toward the NW. VLA observations show the presence of OH masers, which are positioned parallel to the optical jets. A model is proposed that accounts for all of the observational data. This unusual object may link the OH/IR stars having extreme outflow velocities with highly bipolar planetary nebulae.
机译:我们展示了用哈勃太空望远镜(HST),NTT,VLA和发射线恒星He 3-1475的MPIA / ESO 2.2 m望远镜拍摄的光谱和高分辨率图像。渐近的巨型分支星。推测该恒星位于15英寸长的结构的起点,该结构包含对称相对的明亮结。从He 3-1475的中心到喷流末端,结的径向速度为±500 km s〜(-1)。 HST快照显示,He 3-1475的核心是单极,东南端有一颗恒星,星云呈扇形向西北方向扩散。 VLA观测表明存在OH脉搏,其平行于光学喷嘴。提出了一个考虑所有观测数据的模型。这个不寻常的物体可能会将具有极高流出速度的OH / IR恒星与高度双极行星状星云联系起来。

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