用MOPED/VESPA对镓的物理分类
Physical Classification of Galaxies with MOPED/VESPA
摘要：
SDSS巡天中大量星系的高质量光谱的可用性允许更复杂地提取有关其恒星星族的信息，例如，亮度加权年龄。事实上，全面分析星系光谱的复杂而强大的技术现在已经达到了足够的成熟度，可以信任他们的结果和发现。通过从SDSS化石记录中重建星系的恒星形成和金属丰度历史，并分析它与其环境的关系，我们已经学会了如何对星系进行分类：首先，星系的演化取决于其目前的恒星质量，而这反过来又似乎取决于暗晕的合并速率。
英文摘要：
The availability of high-quality spectra for a large number of galaxies in the SDSS survey allows for a more sophisticated extraction of information about their stellar populations than, e.g., the luminosity weighted age. Indeed, sophisticated and robust techniques to fully analyze galaxy spectra have now reached enough maturity as to trust their results and findings. By reconstructing the star formation and metallicity history of galaxies from the SDSS fossil record and analyzing how it relates to its environment, we have learned how to classify galaxies: to first order the evolution of a galaxy is determined by its present stellar mass, which in turn seems to be governed by the merger rate of dark halos.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
