论文标题
3D-DASH：最宽的近红外哈勃太空望远镜调查
3D-DASH: The Widest Near-Infrared Hubble Space Telescope Survey
论文作者
论文摘要
3D-Drift和Shift（3D-DASH）程序是\ textit {Hubble Space望远镜} WFC3 F160W成像和G141赤道宇宙场的G141 Grism调查。 3D-DASH将HST近红外成像和光谱的遗产扩展到了天空的程度尺度上，从而可以识别和研究遥远或在REST-FRAME光学波长下极为罕见或短暂的星系演化阶段的遥远的星系（$ Z> 2 $）。此外，当与现有的ACS/F814W成像结合使用时，该程序有助于对恒星种群的空间分辨研究和中间红移（$ 0.5 <z <2 $）星系的灰尘含量。在这里，我们介绍了社区可提供的减少的F160W成像镶嵌物。通过有效的仪表板技术观察到，马赛克包括1256个单独的WFC3点，对应于1912年1.35度$^2 $（1.43 v $^2 $的面积，包括档案数据）。 $ h_ {160} $的中值$5σ$点源限制为24.74 mag。我们还提供工具来确定本地点扩展功能（PSF），创建切口，并在3D-DASH足迹中的任何位置探索图像。 3D-DASH是迄今为止F160W滤波器中最宽的\ textIt {HST}/WFC3成像调查，可通过数量级在HST分辨率下增加现有的近红外静脉外调查区域。
The 3D-Drift And SHift (3D-DASH) program is a \textit{Hubble Space Telescope} WFC3 F160W imaging and G141 grism survey of the equatorial COSMOS field. 3D-DASH extends the legacy of HST near-infrared imaging and spectroscopy to degree-scale swaths of the sky, enabling the identification and study of distant galaxies ($z>2$) that are rare or in short-lived phases of galaxy evolution at rest-frame optical wavelengths. Furthermore, when combined with existing ACS/F814W imaging, the program facilitates spatially-resolved studies of the stellar populations and dust content of intermediate-redshift ($0.5<z<2$) galaxies. Here we present the reduced F160W imaging mosaic available to the community. Observed with the efficient DASH technique, the mosaic comprises 1256 individual WFC3 pointings, corresponding to an area of 1.35 deg$^2$ (1.43 deg$^2$ in 1912 when including archival data). The median $5σ$ point-source limit in $H_{160}$ is 24.74 mag. We also provide tools to determine the local point spread function (PSF), create cutouts, and explore the image at any location within the 3D-DASH footprint. 3D-DASH is the widest \textit{HST}/WFC3 imaging survey in the F160W filter to date, increasing the existing extragalactic survey area in the near-infrared at HST resolution by an order of magnitude.
