不同环境下恒星形成过程的比较研究
A comparative study of star formation processes in different environments
摘要：
在这篇论文中，我们已经确定了两个恒星形成的星系中的恒星形成的金属含量相差很大的网站。我们的结论是，“大规模”的恒星形成，发生在一个高密度，高金属环境中，像遇到的环核恒星形成地区，发生在系统中，符合定义的超级星团，并安排在恒星形成复合体。这些复合体具有H α光度，因此具有电离恒星的质量，在低端与HII星系重叠，后者具有低得多的金属丰度。它们的电离结构和电离辐射场的温度非常相似，这表明这两种环境中的星团具有相同的等效有效温度。这与恒星演化模型的预测相反，该模型预测在高金属丰度区域恒星的有效温度较低。
英文摘要：
In this thesis we have identified two star formation sites for star formation in galaxies which differ widely in metal content. We conclude that `massive' star formation that occurs in a high density, high metallicity environment, like that encountered in circumnuclear star-forming regions, takes place in systems that comply to the definition of super stellar clusters and that are arranged in star forming complexes. These complexes have Halpha luminosities, and therefore masses of ionizing stars, that overlap at the lower end with those found in HII galaxies, which have a much lower metallicity. The fact that their ionization structure and the temperature of their ionizing radiation field are very similar, point to stellar clusters in these two environments which have the same equivalent effective temperature. This is contrary to what is expected from stellar evolution models which predict lower stellar effective temperatures in high metallicity regions.
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