论文标题
在宇宙领域发现的一个新的极地星系
A New Polar Ring Galaxy Discovered in the COSMOS Field
论文作者
论文摘要
为了完全了解星系的形成和演变，重要的是研究其三维引力潜力，以便大量星系样本。由于极地环星系（PRGS）为这项研究提供了有用的实验室，因此我们通过使用由Hyper Soprime-CAM Subaru战略计划（HSC-SSP）获得的数据集开始对已知PRG样本的详细研究。在这项研究过程中，我们发现了一个新的PRG，该PRG被确定为SDSS J095351.58+012036.1。它的光度红移估计为Z〜0.2。该PRG中的极性环结构似乎几乎垂直于其宿主星系的磁盘，而没有任何干扰的特征。因此，该PRG将为我们提供有关形成这种不受干扰的极性结构的有用信息。我们详细讨论其光度特性。
In order to understand the formation and evolution of galaxies fully, it is important to study their three-dimensional gravitational potential for a large sample of galaxies. Since polar-ring galaxies (PRGs) provide useful laboratories for this investigation, we have started our detailed study of a sample of known PRGs by using the data set obtained by the Hyper Suprime-Cam Subaru Strategic Program (HSC-SSP). During the course of this study, we have discovered a new PRG, identified as SDSS J095351.58+012036.1. Its photometric redshift is estimated as z ~ 0.2. The polar ring structure in this PRG appears to be almost perpendicular to the disk of its host galaxy without any disturbed features. Therefore, this PRG will provide us with useful information on the formation of such an undisturbed polar structure. We discuss its photometric properties in detail.
