CAJ | 학술논문

万方数据

中国科学A辑(英文版) 중국과학A집(영문판)
SCIENCE IN CHINA
2001年 8期 1081-1088 ,共8页

谢光中%梅东成%郑广生%樊军辉謝光中%梅東成%鄭廣生%樊軍輝

사광중%매동성%정엄생%번군휘

quasars%Hubble diagram%deceleration parameter

For 163 metal-rich Quasars, the mv-logZ diagram shows a very close correlation. Using multiple regression analysis for these sources ( N = 163), we obtained q0 = 1. 142 and correlation coef-ficient γ = 0.69. These results suggested that the Universe is closed and all metal-rich quasars are of a single category. On the other hand, the evolution is very small at Z≤2 for metal-rich quasars.