HRDS IV. H, He and C radio recombination lines

The Green Bank Telescope H II Region Discovery Survey (GBT HRDS) found hundreds of previously unknown Galactic regions of massive star formation by detecting hydrogen radio...绿岸望远镜（Green Bank Telescope, GBT）电离氢区发现巡天（H II Region Discovery Survey, HRDS）通过探测射电氢，发现了数百个此前未被发现的银河系大质量恒星形成区域。