HST photometry of I Zw 18 massive stars

Blue compact dwarf galaxies are tiny galaxies that are dominated by intense star-forming regions. Thus, they have been thought to represent a different and extreme environment...蓝致密矮星系（Blue compact dwarf galaxies）是一类以剧烈恒星形成区为主要组成部分的小型星系。因此，这类天体长期以来被认为代表了一种独特且极端的恒星形成环境……