论文标题
附近星系中的固有灰尘和恒星形成缩放关系
Intrinsic dust and star-formation scaling relations in nearby galaxies
论文作者
论文摘要
根据我们最近的工作，我们提出了对附近星系的代表性样本进行详细分析的结果。形态成分的光度参数是使用Galfit软件从凸起盘分解获得的。先前获得的用于粉尘，分解和投影效应的数值校正的方法和库，用于校正所测量的（观察到的）参数为固有值。提出了观察到的固有星系灰尘和恒星形成相关的缩放关系，以强调这些效应引入的偏见的尺度。为了了解在星系的年轻恒星磁盘中分布的恒星形成的程度，显示了依赖于缩放长度的测量和h $α$图像的量表长度和通量 /亮度的恒星形成相关关系。样品的平均灰尘不透明度，尘埃与粉尘质量和尘埃气和气体比率以及内在关系的主要特征与文献中的值一致。
Following from our recent work, we present results of a detailed analysis of a representative sample of nearby galaxies. The photometric parameters of the morphological components are obtained from bulge-disk decompositions, using GALFIT software. The previously obtained method and library of numerical corrections for dust, decomposition and projection effects, are used to correct the measured (observed) parameters to intrinsic values. Observed and intrinsic galaxy dust and star-formation related scaling relations are presented, to emphasize the scale of the biases introduced by these effects. To understand the extent to which star-formation is distributed in the young stellar disks of galaxies, star-formation connected relations which rely on measurements of scale-lengths and fluxes / luminosities of H$α$ images, are shown. The mean dust opacity, dust-to-stellar mass and dust-to-gas ratios of the sample, together with the main characteristics of the intrinsic relations are found to be consistent with values found in the literature.
