H Ⅱ regions made of gas ionized by radiations from young massive stars,are widely distributed in the Milky Way.They are......

This paper presents the results of H imaging of 169 galaxies randomly selected from the.40-SDSS catalog.The sample has e......

How low surface brightness galaxies(LSBGs)form stars and assemble stellar mass is one of the most important questions re......

We selected a sample of nearby galaxies from the Sloan Digital Sky Survey Data Release 7(SDSS DR7) to investigate the va......