Stellar Population Analysis of Galaxies based on Genetic Algorithms

作     者：Abdel-Fattah Attia H.A.Ismail I.M.Selim A.M.Osman I.A.Isaa M.A.Marie A.A.Shaker 

作者机构：National Research Institute of Astronomy and Geophysics(NRIAG)11421 HelwanCairoEgyptNational Research Institute of Astronomy and Geophysics(NRIAG)11421 HelwanCairoEgypt Cairo UniversityFaculty of ScienceAstronomy DepartmentEgypt 

出 版 物：《Chinese Journal of Astronomy and Astrophysics》 (中国天文和天体物理学报(英文版))

年 卷 期：2005年第5卷第4期

页      面：347-355页

核心收录：

学科分类：07[理学] 070401[理学-天体物理] 0704[理学-天文学] 

主　　题：methods numerical-galaxies stellar population-galaxies individual(NGC 3384). 

摘      要：We present a new method for determining the age and relative contribution of different stellar populations in galaxies based on the genetic *** apply this method to the barred spiral galaxy NGC 3384,using CCD images in U,B,V,R and I *** analysis indicates that the galaxy NGC 3384 is mainly inhabited by old stellar population(age〉10^9 yr).Some problems were encountered when numerical simulations are used for determining the contribution of different stellar populations in the integrated color of a *** results show that the proposed genetic algorithm can search efficiently through the very large space of the possible ages.