标题： 分子云中尘埃和气体含量的相关性 显示英文标题

标题： The Correlation Between Dust and Gas Contents in Molecular Clouds

摘要： 分子云是太空中密集气体和尘埃的区域，在那里新恒星和行星诞生。分子云中的尘埃和分子气体分布之间存在很强的相关性。 本研究的重点是比较之前发表的目录中识别出的567个分子云内部尘埃和气体的三维形态。 我们确认了112个分子云样本，基于CO观测和尘埃观测的云形态显示出总体一致性。 有高达334个分子云的尘埃分布可能与气体分布相关。 在24个分子云中，我们无法找到与尘埃分布形状相关的气体结构。 对于112个尘埃分布与气体分布非常一致的分子云，我们使用CO观测数据测量这些分子云的物理性质，并将其与从尘埃推导的结果进行比较，探讨分子云中气体和尘埃之间的相关性。 我们发现分子云中的气体和尘埃具有相当好的线性关系，气溶比为 $\mathrm{GDR}=(2.80_{-0.34}^{+0.37})\times10^{21}\mathrm{\,cm^{-2}\, mag^{-1}}$。 该比例在不同的分子云之间变化很大。 我们测量了表现出强相关性的尘埃-CO云的尺度高度，发现 $h_{Z} = 43.3_{-3.5}^{+4.0}\mathrm{\,pc}$。 显示英文摘要

摘要： Molecular clouds are regions of dense gas and dust in space where new stars and planets are born. There is a strong correlation between the distribution of dust and molecular gas in molecular clouds. The present work focuses on the three-dimensional morphological comparisons between dust and gas within 567 molecular clouds identified in a previously published catalog. We confirm a sample of 112 molecular clouds, where the cloud morphology based on CO observations and dust observations displays good overall consistency. There are up to 334 molecular clouds whose dust distribution might be related to the distribution of gas. We are unable to find gas structures that correlate with the shape of the dust distribution in 24 molecular clouds. For the 112 molecular clouds where the dust distribution correlates very well with the distribution of gas, we use CO observational data to measure the physical properties of these molecular clouds and compare them with the results derived from dust, exploring the correlation between gas and dust in the molecular clouds. We found that the gas and dust in the molecular clouds have a fairly good linear relationship, with a gas-to-dust ratio of $\mathrm{GDR}=(2.80_{-0.34}^{+0.37})\times10^{21}\mathrm{\,cm^{-2}\, mag^{-1}}$. The ratio varies considerably among different molecular clouds. We measured the scale height of dust-CO clouds exhibiting strong correlations, finding $h_{Z} = 43.3_{-3.5}^{+4.0}\mathrm{\,pc}$.