标题： 光度选择的明亮红星系目录与$z\geq0.55$ 显示英文标题

标题： Photometric Selection of a Luminous Red Galaxy Catalog with $z\geq0.55$

摘要： 我们介绍了在红移$z\geq 0.55$处通过光度选择的明亮红色星系（LRG）目录的开发。LRG候选者使用红外/光学颜色-颜色切割进行选择，通过ROC曲线分析进行优化，其中光学数据来自斯隆数字天空调查（SDSS），红外数据来自从广域红外线巡天探测器（WISE）得出的“unWISE”强制光度测量。该目录包含16,191,145个天体，在整个SDSS DR10覆盖区域中进行选择。最终目录的红移分布使用DEEP2星系红移巡天的光谱红移和COSMOS的光度红移进行估计。使用DEEP2的静止框架$U-B$颜色来估计LRG选择效率。在DEEP2中，最终目录的平均红移为$z=0.65$，标准差为$\sigma = 2.0$，平均静止框架$U-B=1.0$，为$\sigma=0.27$。 在COSMOS中，生成的星表平均红移为$z=0.60$，标准差为$\sigma = 1.8$。 我们允许有35%来自更蓝星系的污染，但预计这些星系将在我们目标红移范围内是大质量星系，同样具有宇宙学意义。 被选择的对象中仅有大约6%是红移为$z<0.55$的更蓝源。 恒星污染估计为1.8%。 显示英文摘要

摘要： We present the development of a photometrically selected Luminous Red Galaxy (LRG) catalog at redshift $z\geq 0.55$. LRG candidates are selected using infrared/optical color-color cuts, optimized using ROC curve analysis, with optical data from Sloan Digital Sky Survey (SDSS) and infrared data from "unWISE" forced photometry derived from the Wide-field Infrared Survey Explorer (WISE). The catalog contains 16,191,145 objects, selected over the full SDSS DR10 footprint. The redshift distribution of the resulting catalogs is estimated using spectroscopic redshifts from the DEEP2 Galaxy Redshift Survey and photometric redshifts from COSMOS. Restframe $U-B$ colors from DEEP2 are used to estimate LRG selection efficiency. In DEEP2, the resulting catalog has average redshift $z=0.65$, with standard deviation $\sigma = 2.0$, and average restframe $U-B=1.0$, with $\sigma=0.27$. In COSMOS, the resulting catalog has average redshift $z=0.60$, with standard deviation $\sigma = 1.8$. We allow for 35% contamination from bluer galaxies, however we anticipate these to be massive galaxies in our targeted redshift range that will be equally cosmologically useful. Only an estimated 6% of selected objects are bluer sources with redshift $z<0.55$. Stellar contamination is estimated to be 1.8%.