应用USNO-B1 .0选择蓝色和红色分量移位的对象
Application of USNO-B1.0 towards selecting objects with displaced blue and red components
摘要：
我们已经进行了一项可行性研究，以确定使用USNO-B1.0数据的有效性，优先检测对象与位移的红色和蓝色成分。开发了一个程序来搜索这类天体的目录条目，其中包括与白矮星或早期主序星配对的M矮星，以及具有不对称颜色分布的星系。红色和蓝色以及红外和蓝色扫描乳剂图像之间的残余差异定义了向量，当适当对齐并具有足够长度时，这些向量表示潜在的候选者。测试样本集进行了分析，以评估该技术的有效区分。然后，对天球各点的91，000多个USNO-B1.0目录条目进行过滤，以获得可接受的条目观测和星等组合，并最终将总共约17，000个条目筛选为略多于200个感兴趣的物体。通过对照片图像进行目视检查，最终筛选出146名候选人。这些候选人中约有四分之一与SDSS数据一致。这些成分分为两组，单个和成对的对象。SDSS在第一组中识别出了几个星系。关于第二组，至少有一半的成员被暂时确定为主序对，更大的部分是广泛分离的光谱类型。两个白矮星-主序列对也被确定。最重要的是，从USNO-B1.0残差形成的向量与相应的SDSS对位置角对齐，从而支持这项工作的中心论点。
英文摘要：
We have conducted a feasibility study to determine the effectiveness of using USNO-B1.0 data to preferentially detect objects with displaced red and blue components. A procedure was developed to search catalogue entries for such objects, which include M dwarfs paired with white dwarfs or with earlier main-sequence stars, and galaxies with asymmetric colour distributions. Residual differences between red and blue and infrared and blue scanned emulsion images define vectors, which, when appropriately aligned and of sufficient length, signal potential candidates. Test sample sets were analysed to evaluate the effective discrimination of the technique. Over 91,000 USNO-B1.0 catalogue entries at points throughout the celestial sphere were then filtered for acceptable combinations of entry observations and magnitudes and the resulting total of about 17,000 entries was winnowed down to a little more than 200 objects of interest. These were screened by visual examination of photo images to a final total of 146 candidates. About one quarter of these candidates coincide with SDSS data. Those constituents fall into two groups, single and paired objects. SDSS identified several galaxies in the first group. Regarding the second group, at least half of its members were tentatively identified as main-sequence pairs, the greater portion being of widely separated spectral types. Two white dwarf--main-sequence pairs were also identified. Most importantly, the vectors formed from USNO-B1.0 residuals were in alignment with corresponding SDSS pair position angles, thereby supporting this work`s central thesis.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
