论文标题
银河系残留物的距离，径向分布和总数
Distances, Radial Distribution and Total Number of Galactic Supernova Remnants
论文作者
论文摘要
我们提供一张215个snr的表。使用HI吸收光谱发现了新距离$ 51.26+0.11 $ $ 6.6 \ pm 1.7 $ kpc，并使用Maser/Molecular Cloud Coopsiations使用HI吸收光谱和其他5个SNR。我们使用一致的旋转曲线重新计算所有SNR的距离和误差，并在未估计的情况下提供错误。这会导致20个SNR的大量距离修订。由于观察性的约束和选择效应，因此存在观察到的银河系残留数量（SNR）的明显不足。为了调查这一点，我们采用了两种方法。第一种方法应用了选择效应的校正因子，以得出径向密度分布。第二种方法将SNR表面密度和选择函数的功能形式与数据进行了比较，以查找哪些函数与数据一致。银河系中的SNR总数为$ \ sim3500 $（方法1）或$ \ sim2400 $ to $ \ sim5600 $（方法2）。我们得出的结论是，当前观察到的SNR的数量还不够完整，无法确定确定的总SNR数量或径向密度函数。
We present a table of 215 SNRs with distances. New distances are found to SNR G$51.26+0.11$ of $6.6 \pm 1.7$ kpc using HI absorption spectra, and to 5 other SNRs using maser/molecular cloud associations. We recalculate the distances and errors to all SNRs using a consistent rotation curve and provide errors where they were not previously estimated. This results in a significant distance revisions for 20 SNRs. Because of observational constraints and selection effects, there to be is an apparent deficit of observed number of Galactic supernova remnants (SNRs). To investigate this, we employ two methods. The first method applies correction factors for the selection effects to derive the radial density distribution. The second method compares functional forms for the SNR surface density and selection function against the data to find which functions are consistent with the data. The total number of SNRs in the Galaxy is $\sim3500$ (Method 1) or in the range $\sim2400$ to $\sim5600$ (Method 2). We conclude that the current observed number of SNRs is not yet complete enough to give a well-determined total SNR number or radial density function.
