论文标题
DESI银河系调查（MWS）的初步目标选择
Preliminary Target Selection for the DESI Milky Way Survey (MWS)
论文作者
论文摘要
DESI银河系调查（MWS）将在$ 16 <r <19 $ mag之间观察到$ 800万美元的$ \ ge，并在较差的观察条件下观察到了更明亮的目标。该调查将允许准确确定出色的运动学和人口梯度。表征厚磁盘和恒星光环中的弥漫性子结构；可以发现极为金属的恒星和其他罕见的恒星类型；并改善对Halo Star运动学的Galaxy 3D暗物质分布的限制。 MWS还将在太阳100 pc之内详细描述恒星种群，包括完整的白矮人人口普查。此处描述的初步选择的目标目录是公开的。
The DESI Milky Way Survey (MWS) will observe $\ge$8 million stars between $16 < r < 19$ mag, supplemented by observations of brighter targets under poor observing conditions. The survey will permit an accurate determination of stellar kinematics and population gradients; characterize diffuse substructure in the thick disk and stellar halo; enable the discovery of extremely metal-poor stars and other rare stellar types; and improve constraints on the Galaxy's 3D dark matter distribution from halo star kinematics. MWS will also enable a detailed characterization of the stellar populations within 100 pc of the Sun, including a complete census of white dwarfs. The target catalog from the preliminary selection described here is public.
