HST observations of carbon in spiral galaxies

We present measurements of the gas-phase abundance ratio C/O in six H II regions in the spiral galaxies M101 and NGC 2403, based on ultraviolet spectroscopy using the Faint...本研究报道了旋涡星系M101与NGC 2403中6个电离氢区（H II region）的气相碳氧丰度比（C/O）测量结果，其数据基于采用Faint相关设备的紫外光谱学方法获取。