...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>The Astrophysical Journal. Supplement Series >The Arecibo Dual-Beam Survey: Arecibo and VLA observations
【24h】

The Arecibo Dual-Beam Survey: Arecibo and VLA observations

机译：阿雷西博双光束调查：阿雷西博和VLA观测

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The Arecibo Dual-Beam Survey is a "blind" 21 cm search for galaxies covering similar to 430 deg(2) of sky. We present the data from the detection survey as well as from the follow-up observations to confirm detections and improve positions and flux measurements. We find 265 galaxies, many of which are extremely low surface brightness. Some of these previously uncataloged galaxies lie within the zone of avoidance, where they are obscured by the gas and dust in our Galaxy. Eighty-one of these sources are not previously cataloged optically, and there are 11 galaxies that have no associated optical counterpart or are only tentatively associated with faint wisps of nebulosity on the Digitized Sky Survey images. We discuss the properties of the survey, and in particular we make direct determinations of the completeness and reliability of the sample. The behavior of the completeness and its dependencies is essential for determining the H I mass function. We leave the discussion of the mass function for a later paper, but do note that we find many low surface brightness galaxies and seven sources with M-HI < 10(8) M-. [References: 31]
机译：Arecibo双光束测量是一种21厘米的“盲”搜索，搜索覆盖了430度（2）天空的星系。我们提供了来自检测调查以及后续观察的数据，以确认检测结果并改善位置和通量测量结果。我们发现265个星系，其中许多表面亮度极低。这些先前未分类的星系中的一些位于回避区内，在这些区内被我们银河中的气体和尘埃所遮盖。这些来源中的81个先前没有进行光学分类，并且有11个星系没有相关的光学对应物，或者只是暂时地与“数字化天空勘测”图像上的微弱的星云状模糊关联。我们讨论调查的属性，尤其是直接确定样本的完整性和可靠性。完整性的行为及其依赖性对于确定H I质量函数至关重要。我们在后面的论文中讨论质量函数，但要注意，我们发现许多低表面亮度星系和七个M-HI <10（8）M- <圆点>的源。 [参考：31]

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