Star Formation Histories From Faint Galaxy Counts

Multispectral faint galaxy counts, including the deepest Hubble DeepField, are interpreted with the help of our evolution model PEGASE(Fioc and Rocca-Volmerange, 1997). The best fits correspond to galaxyformations at high redshifts, a pure luminosity evolution andclassical luminosity functions. The...

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Bibliographic Details
Published in:Astrophysics and space science 1999-07, Vol.265 (1-4), p.507-511
Main Authors: Rocca-volmerange, B, Fioc, M
Format: Article
Language:English
Subjects:
Astronomy
Astrophysics
Evolution
Star & galaxy formation
Stars
Stars & galaxies
Online Access:Get full text
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Summary:Multispectral faint galaxy counts, including the deepest Hubble DeepField, are interpreted with the help of our evolution model PEGASE(Fioc and Rocca-Volmerange, 1997). The best fits correspond to galaxyformations at high redshifts, a pure luminosity evolution andclassical luminosity functions. The adopted cosmology is a flatuniverse with the matter density parameter Ω^sub M^ =0.3 and acosmological constant Ω^sub Λ^ =0.7. A solution with Ω^sub M^=0.01 (open universe) is also acceptable. But a flat universe withΩ^sub M^ =1 is clearly excluded. The star formation histories for galaxytypes are derived from scenarios of evolution. The comparison with resultsalready published in the litterature, arises puzzling problems needinga further analysis of star formation tracers, specifically for bright galaxies.[PUBLICATION ABSTRACT]
ISSN:0004-640X
1572-946X
DOI:10.1023/A:1002143623649