星云（RCW 37）的动力学及其与年轻船帆座超新星遗迹RX J0852的关联。
Kinematics of the Pencil Nebula (RCW 37) and its association with the young Vela supernova remnant RX J0852.0-4622
摘要：
本文研究了船帆座X射线碎片D/D '和船帆座X射线超新星遗迹RX J0852.0 - 4622之间的成协关系。最近公布的钱德拉图像的D/D '与RCW 37的光学图像进行了比较，并确认了这两个对象的密切关联。新的光学线轮廓RCW 37从一个扩展的狭缝位置通过这个不寻常的光学星云。它们揭示了一个部分速度椭圆，膨胀速度约为120 km/s。星云起源的各种方案被认为是与RX J0852.0 - 4622的联系的证据进行审查。不排除类似于Crab和DEM 34a SNR中的气体漏斗，但更合理的解释可能是"波浪片"。我们认为，RX J0852.0 - 4622位于更老的更大的船帆座SNR内，并且来自RX J0852.0 - 4622的一些X射线气体与更老残骸的致密HI壁发生了碰撞。这就产生了光辐射的形态和速度结构，并解释了超新星遗迹这一部分不寻常的X射线辐射。如果我们的假设是正确的，那么根据最近对旧船帆座SNR的距离测量，可以做出250 +/-30 pc的距离预测。这是在文献中引用的距离范围的低端，将确认这个年轻的附近超新星遗迹的不寻常性质。
英文摘要：
The association between the Pencil nebula (RCW 37, NGC 2736), the Vela X-ray fragment D/D' and the recently discovered new X-ray supernova remnant (RX J0852.0-4622) in Vela is investigated. Recently published Chandra images of D/D' are compared with optical images of RCW 37 and confirm the close association of the two objects. New optical line profiles of RCW 37 from an extended slit position passing through this unusual optical nebula are presented. They reveal a partial velocity ellipse with expansion velocities of around 120 km/s. Various scenarios for the origin of the nebula are considered and the evidence of a link with RX J0852.0-4622 is reviewed. A funnel of gas similar to those in the Crab and DEM34a SNRs is not ruled out but a more plausible explanation may be that a `wavy sheet' is responsible. We suggest that RX J0852.0-4622 is located within the older larger Vela SNR and that some of the X-ray gas from RX J0852.0-4622 has collided with the dense HI wall of the older remnant. This gives rise to the morphology and velocity structure of the optical emission and explains the unusual X-ray emission from this portion of the supernova remnant. If our hypothesis is correct, a distance prediction of 250 +/- 30 pc can be made, based on recent measurements of the distance to the old Vela SNR. This is at the lower end of the range of distances quoted in the literature would confirm unusual nature of this young nearby supernova remnant.
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