Model colour-magnitude diagrams of elliptical galaxies
نویسندگان
چکیده
منابع مشابه
Origin of the colour-magnitude relation of elliptical galaxies
Evolutionary models of elliptical galaxies are constructed by using a new population synthesis code. Model parameters are calibrated to reproduce the observed colour-magnitude (CM) relation of Coma ellipticals in V −K vs. MV diagram. The SEDs are degenerated in stellar age and metallicity. An attempt is performed to break this degeneracy, by simulating evolution of the CM relation of elliptical...
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In this paper, we present a model of the formation and chemical enrichment of elliptical galaxies that differs from the conventional picture in two fundamental ways: 1. Ellipticals do not form in a single monolithic collapse and burst of star formation at high redshift. Instead, most of their stars form at modest rates in disk galaxies, which then merge to form the ellipticals. 2. Galaxies do n...
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We have developed an homogeneous evolutionary scenario for Hand He-burning low-mass stars by computing updated stellar models for a wide metallicity and age range (0.0002≤ Z ≤0.004 and 9≤ t(Gyr) ≤15, respectively) suitable to study globular clusters. This theoretical scenario allows us to provide self-consistent predictions about the dependence of selected observational features of the colour-m...
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We examined the physical origin of the colour–magnitude relation of elliptical galaxies in clusters of galaxies in the hierarchical clustering scenario by using a semi-analytic model of galaxy formation. The semi-analytic model includes some physical processes connected with the galaxy formation, such as merging histories of dark haloes, gas cooling, star formation, supernova feedback, mergers ...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2007
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361:20054788