Replication data for: Second Quadrant, 1/4° sampled (DHT18)

This is the single survey with the largest angular extent, covering more than the entire second quadrant over a wide latitude range. The sampling is 1/4 °. Spectra spaced every 1/4° were extracted from the Cygnus, CasA, and MonOB1 surveys and included in the cubes presented here. All the spectra were interpolated to a channel spacing of exactly 1.300 km/s (in contrast to many other surveys that have a spacing of 1.3004 km/s, corresponding to 0.5 MHz at the CO frequency).本数据集为角覆盖范围最广的单次巡天项目，在大纬度范围内覆盖了远超完整第二象限的天区。其空间采样步长为0.25°。本研究呈现的数据立方（data cube）中，包含了从天鹅座、仙后座A（Cas A）以及麒麟座OB1星协巡天中提取的、空间步长为0.25°的光谱数据。所有光谱均被插值至严格1.300 km/s的通道间隔，相较于多数巡天项目采用的1.3004 km/s间隔，后者在一氧化碳（CO）谱线频率下对应0.5 MHz的频率间距。