...
首页> 外文期刊>International Scholarly Research Notices >Locations of Satellite Galaxies in the Two-Degree Field Galaxy Redshift Survey
【24h】

Locations of Satellite Galaxies in the Two-Degree Field Galaxy Redshift Survey

机译:二度野外星系红移调查中卫星星系的位置

获取原文

摘要

We compute the locations of satellite galaxies in the Two-Degree Field Galaxy Redshift Survey using two sets of selection criteria and three sources of photometric data. Using the SuperCOSMOSrFphotometry, we find that the satellites are located preferentially near the major axes of their hosts, and the anisotropy is detected at a highly significant level (confidence levels of 99.6% to 99.9%). The locations of satellites that have high velocities relative to their hosts are statistically indistinguishable from the locations of satellites that have low velocities relative to their hosts. Additionally, satellites with passive star formation are distributed anisotropically about their hosts (99% confidence level), while the locations of star-forming satellites are consistent with an isotropic distribution. These two distributions are, however, statistically indistinguishable. Therefore it is not correct to interpret this as evidence that the locations of the star-forming satellites are intrinsically different from those of the passive satellites.
机译:我们使用两组选择标准和三个光度数据源来计算两度野外星系红移调查中卫星星系的位置。使用SuperCOSMOSrF光度法,我们发现卫星优先位于其主机的主轴附近,并且以很高的显着水平(置信度为99.6%至99.9%)检测到各向异性。相对于其主机具有较高速度的卫星的位置与相对于其主机具有较低速度的卫星的位置在统计上是无法区分的。此外,具有被动恒星形成的卫星在其宿主周围各向异性分布(置信度为99%),而形成恒星的卫星的位置与各向同性分布一致。但是,这两个分布在统计上是无法区分的。因此,将其解释为恒星形成的卫星的位置与无源卫星的固有位置不同的证据是不正确的。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号