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。
2
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。
3
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.