论文标题
南部天空中的大量分子云目录
A large catalogue of molecular clouds in the southern sky
论文作者
论文摘要
我们提出了大型分子云目录，在南部天空中具有准确的距离估计值。基于Guo等人中提出的1700万星的三维（3D）尘埃灭绝图以及最合适的灭绝和距离信息，我们使用层次结构识别算法确定了南部天空中的250个尘埃/分子云。其中，有71个云位于高银河纬度（$ b <-10^\ circ $）。我们通过使用简单的高斯灰尘分布模型将视线线与云层重叠的灭绝与距离轮廓拟合，估计了云到云的距离。距离的典型不确定性少于每$ \，$ CENT。我们还提供各个云的物理特性，包括线性半径，质量和表面质量密度。
We present a large catalogue of molecular clouds with accurate distance estimates in the southern sky. Based on the three-dimensional (3D) dust extinction map and the best-fit extinction and distance information of over 17 million stars presented in Guo et al., we have identified 250 dust/molecular clouds in the southern sky using a hierarchical structure identification algorithm. Amongst them, 71 clouds locating at high Galactic latitudes ($b < -10^\circ$). We have estimated the distances to the clouds by fitting the extinction versus distance profiles of the lines of sight overlapping with the clouds using a simple Gaussian dust distribution model. The typical uncertainties of the distances are less than 7 per$\,$cent. We also provide the physical properties of the individual clouds, including the linear radius, mass and surface mass density.
