Southern HII Region Discovery Survey (SHRDS): Dataset 2

The Southern HII Region Discovery Survey is an Australia Telescope Compact Array 4-6 and 8-10 GHz radio continuum and radio recombination line survey of Milky Way HII regions (Wenger et al., 2021). This data archive contains all relevant intermediate data products from the final SHRDS data release (the Full Catalog). For each observed HII region and calibrator field, this archive contains (1) a 4 GHz bandwidth, full-Stokes, multi-scale, multi-frequency synthesis (MS-MFS) continuum FITS image, (2) up to sixteen 256 MHz bandwidth, full-Stokes, MS-MFS continuum FITS images covering the full 4 GHz bandwidth, (3) a Stokes I MS-MFS FITS image of each RRL transition, (4) a Stokes I multi-scale FITS data cube of each RRL transition, and (5) a FITS image containing the watershed segmentation region for each identified HII region at each observed frequency. The archive also includes the relevant residual images/cubes and primary beam images for all of these data products, as well as all of the images and cubes smoothed to a common angular resolution.\nLineage: Australia Telescope Compact Array project code C2842 and C2963. See Wenger et al. 2021.

南部电离氢区发现巡天（Southern HII Region Discovery Survey, SHRDS）是一项基于澳大利亚望远镜紧凑阵列（Australia Telescope Compact Array）实施的银河系H II区4-6吉赫与8-10吉赫射电连续谱及射电复合线巡天项目（Wenger等人，2021）。本数据档案库包含最终SHRDS数据发布版（全星表）中的全部相关中间数据产物。针对每一个观测到的H II区及校准器天区，本档案库包含以下数据产品：(1) 带宽为4吉赫的全斯托克斯（full-Stokes）多尺度多频率合成（MS-MFS）射电连续谱FITS图像；(2) 最多16幅带宽为256兆赫、覆盖全4吉赫带宽的全斯托克斯MS-MFS射电连续谱FITS图像；(3) 每条射电复合线（RRL, radio recombination line）跃迁对应的斯托克斯I（Stokes I）MS-MFS FITS图像；(4) 每条射电复合线跃迁对应的斯托克斯I多尺度FITS数据立方体；(5) 对应各观测频率下每一个已识别H II区的分水岭分割区域的FITS图像。本档案库还涵盖所有上述数据产物对应的相关残差图像/数据立方体及主波束图像，同时包含全部经平滑至统一角分辨率的图像与数据立方体。数据谱系：澳大利亚望远镜紧凑阵列项目编号C2842与C2963。详见Wenger等人2021年研究。