Using data drawn from the DEEP2 and DEEP3 Galaxy Redshift Surveys, we investigate the relationship between the environment and the structure of galaxies residing on the red sequence at intermediate redshift. Within the massive (10 < log10(M /h−2 M ) < 11) earlytype population at 0.4 < z < 1.2, we find a significant correlation between local galaxy overdensity (or environment) and galaxy size, s...

Ongoing accretion of low-metallicity gas onto the disk is a natural prediction of semi-analytical Galactic chemical evolution models. This star formation fuel ameliorates the overproduction of metal-poor Gand K-dwarfs in the solar neighbourhood which otherwise plague socalled “closed-box” models of Galaxy evolution. Do High-Velocity Clouds (HVCs) represent the source of this necessary fuel? We ...

The UH8K wide field camera of the CFHT was used to image 0.68 deg2 of sky. From these images, ∼20,000 galaxies were detected to completeness magnitudes V < 23.5 and I < 22.5. The angular correlation function of these galaxies is well represented by the parameterization ω(θ) = AW θ−δ . The slope δ ' −0.8 shows no significant variation over the range of magnitude. The amplitude AW decreases with ...

To understand galaxies and their evolution, it is necessary to describe how the different scales interact: how the microscopic physics, such as star formation, or the large scale physics, such as galaxy interactions may modify the galaxy global shapes. The purpose of this review is to point out some general or recent topics related to such scale interactions, both observational and theoretical,...

The Galaxy Evolution Explorer (GALEX) continues its surveys of the ultraviolet sky. GALEX surveys have supported the following galaxy evolution investigations: calibrating UV as a star formation rate tracer, using wide and deep surveys to measure star formation history, studying the evolution of dust extinction and metallicity, selecting and analyzing galaxies in transitory states, finding loca...

We present predictions for the evolution of the galaxy luminosity function, number counts and redshift distributions in the IR based on the ΛCDM cosmological model. We use the combined GALFORM semi-analytical galaxy formation model and GRASIL spectrophotometric code to compute galaxy SEDs including the reprocessing of radiation by dust. The model assumes two different IMFs: a normal solar neigh...

Galaxy luminosity evolution: how much is due to a model choice? Abstract. The cluster and field luminosity functions (LFs) determined on large homogeneous samples (N > 2200 galaxies each) are almost indistinguishable, down to M * + 4 in the r and i filters, hence suggesting that the effect of the cluster environment on the galaxy properties does not affect the galaxy luminosity function in red ...

This paper presents a review of the topic of galaxy formation and evolution, focusing on basic features of galaxies, and how these observables reveal how galaxies and their stars assemble over cosmic time. I give an overview of the observed properties of galaxies in the nearby universe and for those at higher redshifts up to z ∼ 10. This includes a discussion of the major processes in which gal...

This series of papers is intended to present astrocladistics in some detail and evaluate this methodology in reconstructing phylogenies of galaxies. Being based on the evolution of all the characters describing galaxies, it is an objective way of understanding galaxy diversity through evolutionary relationships. In this first paper, we present the basic steps of a cladistic analysis and show bo...

Deep multi-color galaxy surveys with photometric redshifts will provide a large number of twopoint correlation observables: galaxy-galaxy angular correlations, galaxy-shear cross correlations, and shear-shear correlations between all redshifts. These observables can potentially enable a joint determination of the dark energy dependent evolution of the dark matter and distances as well as the re...