This paper reviews the progress on studies of the cosmic evolution of the luminosity function of optically selected quasars.
本文评述了光学选类星体光度函数演化的研究方面取得的进展。
The evolution characters of post-AGB stars often appear to be constant luminosity, and great increase of their surface temperature.
AGB星常常表现为光度不变、表面温度大大增加的演化特征。
Due to their high luminosity and high mass-loss rates, massive stars are playing an important role in the studies of modern astrophysics, such as the formation and the evolution of galaxies.
由于高光度和高质量损失率等特性，大质量恒星在星系形成和演化等现代天体物理学的研究中扮演着重要的角色。
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