We present the first 3D hydrodynamical simulations of ram pressure stripping of a disc galaxy orbiting in a galaxy cluster. Along the orbit, the ram pressure that this galaxy experiences varies with time. In this paper, we focus on the evolution of the radius and mass of the remaining gas disc and compare it with the classical analytical estimate proposed by Gunn & Gott (1972). We find that thi...

Context. We study galaxy evolution and spatial patterns in the surroundings of a sample of 2dF groups. Aims. Our aim is to find evidence of galaxy evolution and clustering out to 10 times the virial radius of the groups and so redefine their properties according to the spatial patterns in the fields and relate them to galaxy evolution. Methods. Group members and interlopers were redefined after...

It is believed that the biasing of the galaxies plays an important role for understanding the large-scale structure of the universe. In general, the biasing of galaxy formation could be stochastic. Furthermore, the future galaxy survey might allow us to explore the time evolution of the galaxy distribution. In this paper, the analytic study of the galaxy-mass density relation and its time evolu...

Galaxy redshift surveys are outstanding tools for observational cosmology because they produce large sample of standard galaxies at different cosmic epochs. Redshift acquisition has undergome tremendous progress thanks to advances in technology, and redshift surveys appear nowdays as routine. Even though they may look simple at face-value, the strategy of a survey and the galaxy-selection crite...

Dust plays crucial roles in galaxy formation and evolution. In the early epoch of galaxy evolution dust is only supplied by supernovae (SNe). With the aid of a new physical model of dust production by SNe, we constructed a model of dust emission from forming galaxies. We show the evolution of the spectral energy distribution (SED). Then we adopt this model to a local starbursting dwarf galaxy S...

Working within the classic supernovae-driven wind framework for elliptical galaxy evolution, we perform a systematic investigation into the discrepancies between the predictions of three contemporary codes – Arimoto & Yoshii (1987, A&A, 173, 23), Bressan et al. (1994, ApJS, 94, 63), and Gibson (1996a, MNRAS, 278, 829; 1996b, MNRAS, submitted). By being primarily concerned with reproducing the p...

We use very deep (Rlim=27) UnGRI imaging to study the evolution of the faint end of the UV-selected galaxy luminosity function from z∼4 to z∼2. We find that the number of sub-L∗ galaxies increases from z∼4 to z∼3 while the number of bright ones appears to remain constant. We find no evidence for continued evolution to lower redshift, z∼2. If real, this differential evolution of the luminosity f...

We investigate various probes of luminosity evolution in the rich cluster environment, concentrating in particular on the spheroidal (E/S0) galaxies, using a newly constructed catalog of morphologically classiÐed Hubble Space Telescope (HST ) images of galaxies observed in the cores of 13 clusters with redshifts 0.171 z 1 0.56. An important distinction of this study compared to earlier work is ...