论文标题
在SH2-236中的两个星云的光蒸发，尘埃极化和运动学上
On the photo-evaporation, dust polarization, and kinematics of two nebulae in Sh2-236
论文作者
论文摘要
在此处介绍的工作中，研究了磁场对SH2-236 H \，II区域中彗星小球SIM 129和SIM 130的动态演化的影响，研究了从其表面流出的电离气体。与这些小球相关的区域中的磁场形态是使用与白羊座的Sampurnanand望远镜的光学极化测量来推断的。通过档案馆国家射电天文台（NRAO）非常大的阵列（VLA）天空调查（NVSS）数据，通过1.4〜GHz的无线电连续映射进行探测，将变形线发射探测。这些测量值的相关性表明，来自SIM 129和SIM 130表面的光蒸发气体在云中积累，并沿着磁场线开始流式传输。 $ \ rm ^{12} co $（j = 1-0）分子线观测值是从Taeduk射电天文台（TRAO）中的14米单盘射电望远镜（TRAO）中的14米单盘射电望远镜（TRAO）进行的。在davis-chandrasekhar-fermi配方中使用了$ \ rm ^{12} CO $（J = 1-0）分子线的速度分散液和极化角度的分散体，以估计磁场强度朝向两个SIM NEBULAE。发现场强的平均值为$ \ sim $ 60 $μ$ g，不确定性为估计值的0.5倍。
In the work presented here, the impact of magnetic field on the dynamical evolution of cometary globules Sim 129 and Sim 130 in Sh2-236 H\,II region and the ionized gas streaming out of their surfaces is investigated. The magnetic field morphology in the region associated with these globules is inferred using optical polarization measurements with the Sampurnanand Telescope at ARIES. The nebular emission is probed through radio continuum mapping at 1.4~GHz with the archival National Radio Astronomy Observatory (NRAO) very large array (VLA) Sky Survey (NVSS) data. The correlation of these measurements suggest that the photoevaporated gas from the surfaces of Sim 129 and Sim 130 is accumulated in clouds and starts streaming along the magnetic field lines. The $\rm ^{12}CO$ (J=1-0) molecular line observations are performed towards NGC\,1893 from 14-m single dish radio telescope in Taeduk Radio Astronomy Observatory (TRAO). The velocity dispersion in $\rm ^{12}CO$ (J=1-0) molecular line and the dispersion in polarization angles are used in Davis-Chandrasekhar-Fermi formulation to estimate the magnetic field strength towards two sim nebulae. The average value of field strength is found to be $\sim$60$μ$G with uncertainty of 0.5 times the estimated value.
