论文标题
大象树干的共同线和无线电连续研究：M16中创造的支柱
CO-Line and Radio Continuum Study of Elephant Trunks: The Pillars of Creation in M16
论文作者
论文摘要
通过分析12CO（J = 1-0），13CO（j = 1-0）和C18O（J = 1-0） - 与Nobeyama 45-m Telescope和Galactic Prace Prace Commution acy At 20和90 cm，研究了M16中大象躯干（ET，创建支柱）的分子线和无线电连续性特性。柱西I的头团被发现是M16中最明亮的无线电源，显示了紧凑型HII区域的热光谱和特性，NGC 6611中最近的O5星是加热源。无线电柱具有彗星结构凹入分子躯干头，表面亮度分布遵循远程激发源的简单照明定律。支柱头中的分子密度估计为$ 10^4 $ h $ _2 $ cm $^{ - 3} $和分子质量$ \ sim 13-40 m \ odot $。共同运动学揭示了支柱尾部中的团块以$ \ sim 1-2 $ km/s的方式随机旋转，可与速度分散剂和估计的alfven速度相当。有人建议，速度梯度的随机方向将表现出围绕柱轴周围的团块的扭转磁振荡。
Molecular-line and radio continuum properties of the elephant trunks (ET, pillars of creation) in M16 are investigated by analyzing the 12CO(J=1-0), 13CO(J=1-0) and C18O(J=1-0)-line survey data with the Nobeyama 45-m telescope and the Galactic plane radio survey at 20 and 90 cm with the Very Large Array. The head clump of Pillar West I is found to be the brightest radio source in M16, showing thermal spectrum and property of a compact HII region with the nearest O5 star in NGC 6611 being the heating source. The radio pillars have cometary structure concave to the molecular trunk head, and the surface brightness distribution obeys a simple illumination law by a remote excitation source. The molecular density in the pillar head is estimated to be several $10^4$ H$_2$ cm$^{-3}$ and molecular mass $\sim 13-40 M\odot$. CO-line kinematics reveals random rotation of the clumps in the pillar tail at $\sim 1-2$ km/s, comparable to the velocity dispersion and estimated Alfven velocity. It is suggested that the random directions of velocity gradients would manifest a torsional magnetic oscillation of the clumps around the pillar axis.
