Multiple and strong luminosity evolution in the population of elliptical galaxies
He, P; Zhang, YZ
AbstractThe traditional single burst and passive evolution model for elliptical galaxies should not be accepted. In this paper we demonstrate further by comparison of the model predictions with the observed B-X color distribution of galaxies, that the internal extinction by dust cannot save the traditional scenario for ellipticals either. Hence we do not agree with Zepf's (S.E. Zepf, Nature 390 (1997) 377) argument that such a scenario could still survive if ellipticals might have formed in dusty starburst environments. Furthermore, we have also found that the luminosity evolution within the population of ellipticals should be strong, complicated or multiple, which is not favored by our previous study of number counts for ellipticals. The conflicting results simply suggest that the pure luminosity evolution model should not be accepted, and hence the number evolution for ellipticals is a straightforward inference. Our conclusions hold in any one of the three cosmological models, i.e., flat, open, or Lambda-dominated, under consideration.
Keywordcosmology elliptical galaxies galaxy formation galaxy evolution
WOS Research AreaPhysics
WOS SubjectPhysics, Multidisciplinary
WOS IDWOS:000081788100026
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Document Type期刊论文
Corresponding AuthorHe, P
Affiliation1.Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China
2.Chinese Acad Sci, State Key Lab Sci & Engn Comp, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
He, P,Zhang, YZ. Multiple and strong luminosity evolution in the population of elliptical galaxies[J]. COMMUNICATIONS IN THEORETICAL PHYSICS,1999,32(1):155-160.
APA He, P,&Zhang, YZ.(1999).Multiple and strong luminosity evolution in the population of elliptical galaxies.COMMUNICATIONS IN THEORETICAL PHYSICS,32(1),155-160.
MLA He, P,et al."Multiple and strong luminosity evolution in the population of elliptical galaxies".COMMUNICATIONS IN THEORETICAL PHYSICS 32.1(1999):155-160.
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