Semi analytical description of formation of galaxies and clusters of galaxies

Abstract

We apply the well known semi analytical model of formation of DM halos to discuss the process of formation and evolution of the relaxed objects dominated by the DM component (such as the first and dSph galaxies and clusters of galaxies). On the one hand this approach allows us to obtain a simple description of evolution of the first galaxies. On the other hand it reveals links between the observed characteristics of the relaxed DM halos and the initial power spectrum of density perturbations. Results of our analysis of the observed properties of 41 DM dominated dSph galaxies and data of $\sim 300$ clusters of galaxies are consistent with the $\Lambda$CDM like power spectrum of initial perturbations down to the scale of $\sim 10kpc$.

15 pages, 6 figures

References in corpus (18)

• Observational constraints on Cosmic Reionization
• Resolving the Formation of Protogalaxies. III. Feedback from the First Stars
• The First Galaxies: Assembly, Cooling and the Onset of Turbulence
• GHASP : an H alpha kinematic survey of spiral and irregular galaxies. V. Dark matter distribution in 36 nearby spiral galaxies
• Radiative feedback and the low efficiency of galaxy formation in low-mass haloes at high redshift
• The pseudo-evolution of halo mass
• Resolving the Formation of Protogalaxies. I. Virialization
• A Population of Massive and Evolved Galaxies at z$\ga$5
• Metal-Free Gas Supply at the Edge of Reionization: Late-Epoch Population III Star Formation
• X-ray properties in massive galaxy clusters: XMM-Newton observations of the REFLEX-DXL sample
• Star Formation in the First Galaxies I: Collapse Delayed by Lyman-Werner Radiation
• Tight Correlations Between Massive Galaxy Structural Properties and Dynamics: The Mass Fundamental Plane Was in Place by z~2
• Self-Similar Solutions of Triaxial Dark Matter Halos
• Inhomogeneous Helium Reionization and the Equation of State of the Intergalactic Medium
• Metals and ionizing photons from dwarf galaxies
• High redshift X-ray galaxy clusters. II. The L_X-T relationship revisited
• A Predicted New Population of UV-faint Galaxies at z>4
• A Simple Model for the Density Profiles of Isolated Dark Matter Halos

Cited by in corpus (2)

• Halos in Dark Ages: formation and chemistry
• A test of invariance of dark matter halo surface density using multiwavelength mock galaxy catalogues