论文标题
风星云和超新星的超新星残留物
Wind nebulae and supernova remnants of very massive stars
论文作者
论文摘要
一小部分（失控的）巨星的质量超过$ 60 $ - $ 70 \，\ rm m _ {\ odot} $，并被预测为发光的蓝色可变量和狼射线星星，然后以核心 - 倒塌的超新星结束生命。 Our 2D axisymmetric hydrodynamical simulations explore how a fast wind ($2000\, \rm km\, \rm s^{-1}$) and high mass-loss rate ($10^{-5}\, \rm M_{\odot}\, \rm yr^{-1}$) can impact the morphology of the circumstellar medium.它的形状为100个尺度的风星云，当驾驶星以速度授权移动$ 20 $ - $ 40 \，\ rm km \，\ rm s^{ - 1} $通过星际介质（ISM）在银河平面上以速度刺穿的速度。这种失控的恒星的运动使超新星爆炸的位置从其弓形冲击星云中脱落，对最终的冲击波膨胀施加了不对称的态度，并引起了类似Cygnus-loop的Supernova Remnants。我们得出的结论是，丝状风腔的尺寸（高达$ 200 \，\ rm pc $），其中化学丰富的超新星弹射器会扩大，有效地将风和ISM材料在数量密度上至少$ 10 \％的材料混合在一起，可以用作大量$ 0.1 $ 0.1 $ 0.1 $ 0.1 $ 0.1 progenters the the My flave the Wind和ISM的材料。我们的结果激发了进一步的观察活动，致力于巨大的恒星BD+43 3654的弓形冲击，并促进了同步发射的狼射线壳G2.4+1.4的近环境。
A very small fraction of (runaway) massive stars have masses exceeding $60$-$70\, \rm M_{\odot}$ and are predicted to evolve as Luminous-Blue-Variable and Wolf-Rayet stars before ending their lives as core-collapse supernovae. Our 2D axisymmetric hydrodynamical simulations explore how a fast wind ($2000\, \rm km\, \rm s^{-1}$) and high mass-loss rate ($10^{-5}\, \rm M_{\odot}\, \rm yr^{-1}$) can impact the morphology of the circumstellar medium. It is shaped as 100 pc-scale wind nebula which can be pierced by the driving star when it supersonically moves with velocity $20$-$40\, \rm km\, \rm s^{-1}$ through the interstellar medium (ISM) in the Galactic plane. The motion of such runaway stars displaces the position of the supernova explosion out of their bow shock nebula, imposing asymmetries to the eventual shock wave expansion and engendering Cygnus-loop-like supernova remnants. We conclude that the size (up to more than $200\, \rm pc$) of the filamentary wind cavity in which the chemically enriched supernova ejecta expand, mixing efficiently the wind and ISM materials by at least $10\%$ in number density, can be used as a tracer of the runaway nature of the very massive progenitors of such $0.1\, \rm Myr$ old remnants. Our results motivate further observational campaigns devoted to the bow shock of the very massive stars BD+43 3654 and to the close surroundings of the synchrotron-emitting Wolf-Rayet shell G2.4+1.4.
