发表机构
Korea Institute for Advanced Study; Korea Astronomy and Space Science Institute; University of Ulsan; University of Science and Technology; Kyungpook National University; Space Telescope Science Institute; Pusan National University; Korea National University of Education; Seoul National University; Yonsei University（韩国高等研究院; 韩国天文学与空间科学研究所; 蔚山科学技术院; 科学技术联合大学院大学; 庆北国立大学; 太空望远镜科学研究所; 釜山国立大学; 韩国国立教育大学; 首尔国立大学; 延世大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
该3.5米分块镜机器人空间望远镜采用图像切片器开展光谱观测，通过多层级巡天研究宇宙学与星系演化，涵盖重子声学振荡、超新星等，还可检验暗物质模型。
AI 中文摘要
该3.5米分块镜机器人空间望远镜的所有光谱观测均采用图像切片器。规划基线中，宽巡天使用分辨率R≈1000，同时保留可选择的R≈5000波段用于精确谱线测量。核心科学目标是开展密集发射线星系红移巡天，以研究重子声学振荡和红移空间畸变；超新星和类星体项目则利用空间操作的稳定性、多路复用能力和可重复性开展研究。超新星层级在标准观测中测量z≈0.9-1.1处的静止帧U和近紫外星等，以亚群精度区分光学双生子，在10小时叠加观测中可测量z≈1.3-1.5处的对应星等。每块宽巡天天区会接收3个光谱定向观测，联合场景重构利用不同的重叠几何恢复光谱。旗舰巡天覆盖100-300平方度，目标是获取10^6至3×10^6个发射线星系样本；深铅笔束层级和超新星时域层级作为宽巡天的补充。相同观测还可用于统计超扩散星系和低表面亮度星系、绘制星系团内光图，并通过矮星系结构和低质量暗晕丰度检验冷暗物质、自相互作用暗物质及模糊暗物质模型。
英文摘要
The 3.5-meter Segmented-Mirror Robotic Space Telescope uses an image slicer for all spectroscopic observations. The planning baseline uses $R \simeq 1000$ for the wide survey and retains selectable $R \simeq 5000$ bands for precision line measurements. The central science case is a dense emission-line galaxy redshift survey for baryon acoustic oscillations and redshift-space distortions. Supernova and quasar programs exploit the stability, multiplexing, and repeatability of space operations. The supernova tier measures rest-frame U and near-ultraviolet magnitudes that separate optical twins at subgroup precision to $z \simeq 0.9$--$1.1$ in standard visits and to $z \simeq 1.3$--$1.5$ in ten-hour stacks. Every wide-survey tile receives three spectroscopic orientations, and a joint scene reconstruction uses their different overlap geometries to recover the spectra. The flagship survey covers 100--300 deg$^2$ and targets $10^6$--$3 \times 10^6$ emission-line galaxies. A deep pencil-beam tier and a supernova time-domain tier complement the wide survey. The same observations provide a census of ultra-diffuse and low-surface-brightness galaxies, map intracluster light, and test cold, self-interacting, and fuzzy dark matter through dwarf-galaxy structure and low-mass halo abundance.
CommentsRevised version clarifying the ELG redshift-survey strategy for BAO and RSD measurements and the propagation of observational uncertainties into the cosmological analysis. Attribution and references to relevant prior studies have also been expanded, with minor editorial revisions
