期刊
ASTRONOMICAL JOURNAL
卷 128, 期 2, 页码 712-722出版社
IOP PUBLISHING LTD
DOI: 10.1086/421847
关键词
galaxies : individual (NGC 5128); galaxies : stellar content; globular clusters : general
To investigate the global properties of the globular cluster system (GCS) around NGC 5128, the central giant elliptical galaxy in the nearby Centaurus group, we have obtained deep CCD imaging for an area of almost 2 deg(2) centered on the galaxy. Our data, in the CMT1 Washington photometric system, reach an approximate limiting magnitude of T-1 similar or equal to R similar or equal to 22 and contain magnitudes, colors, and coordinates for more than 100,000 objects. Of these, the vast majority ( about 99%) are either foreground stars or faint background galaxies; the old-halo globular clusters make up the remaining tiny fraction of the sample. Our database, however, provides the material for understanding the large-scale features of the GCS, including its metallicity distribution (MDF), luminosity distribution, and spatial structure.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据