Abstract
Cluster of galaxies are one of the best cosmological laboratories to study the different physical mechanism that regulate the galaxy evolution. Many galaxy properties like the star formation rates, the gas content and the galaxy morphology are regulated locally and also by the large-scale environment. In particular, the galaxy morphology is one of the fundamental parameter that defines the characteristic of the galaxies. Although the galaxy properties are well established for massive clusters (locally and at higher redshifts), the galaxy population in intermediate mass system, those between loose groups and rich clusters, have received comparatively little attention. In this poster we investigate the galaxy population and analyze the properties of the poor cluster of galaxy [VMF98] 22 at redshifts. This cluster was selected from the 160 Square Degree ROSAT Cluster Survey (Vikhlinin et al. 1998, ApJ, 502, 558). The analysis is based on deep imaging and spectroscopic observations obtained at Gemini North with the Gemini Multiobject Spectrograph (GMOS-N).
