The dwarf galaxy population in compact galaxy groups

我们将借助U、B和R波段的深宽带成像来研究致密星系群中的矮星系种群。最初的假设是这些星系群中没有暗淡的星系，但同时在致密星系群的中心区域也发现了矮星系。为了确定矮星系的人口，特别是在外部区域，我们使用WWFPP（“Weit-Winkel-Fl/“achen-Photometer-Polarimeter”）来覆盖更大的区域。由于假设环境在星系演化中起着重要作用，致密星系群是独一无二的。他们拥有的密度接近星系密度的丰富的集群，甚至可能超过it. We打算比较光度，和形态学性质的矮星系在紧凑的群体与矮星系的集群，松散的群体，和领域。在这三个滤波带的帮助下，我们将能够使用光度红移来排除更高红移的背景星系。这使我们能够分离出属于致密星系群的局部星系群。

We are going to investigate the dwarf galaxy population of compact groups with the help of deep broad band imaging in U, B, and R. It was originally supposed that these groups lack faint galaxies but dwarf galaxies have meanwhile been identified even in the central regions of compact groups. In order to determine the dwarf galaxy population especially in the outer regions we use the WWFPP ("Weit-Winkel-Fl/"achen-Photometer-Polarimeter") to cover a larger field. As it is assumed that the environment plays an important role in galaxy evolution, compact groups are unique. They possess densities which approximate galaxy densities of rich clusters or may even exceed it. We intend to compare the photometric, and morphological properties of dwarf galaxies in compact groups with dwarf galaxies in clusters, loose groups, and the field. With the help of the three filter bands we will be able to use photometric redshifts to exclude the higher redshift background galaxies. This allows us to isolate the local galaxy population belonging to the compact groups.