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A 4.8 AND 8.6?GHz SURVEY OF THE SMALL MAGELLANIC CLOUD: THE IMAGES

机译:小型麦哲伦云的4.8和8.6?GHz调查:图像

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Detailed 4.8 and 8.6?GHz radio images of the entire Small Magellanic Cloud with half-power beamwidths of 35'' at 4.8?GHz and 22'' at 8.6?GHz have been obtained using the Australia Telescope Compact Array. A total of 3564 mosaic positions were used to cover an area of 45 on a side. Full polarimetric observations were made. These images have sufficient spatial resolution (~9 and 6?pc, respectively) and sensitivity (3σ of 1.5?mJy?beam–1) to identify most of the individual supernova remnants and H II regions and also, in combination with available data from the Parkes 64?m telescope, the structure of the smooth emission in that galaxy. In addition, limited data using the sixth antenna at 4.5-6?km baselines are available to distinguish bright point sources (< 3 and 2 arcsec, respectively) and to help estimate sizes of individual sources smaller than the resolution of the full survey. The resultant database will be valuable for statistical studies and comparisons with X-ray, optical and infrared surveys of the Small Magellanic Cloud with similar resolution. The images and calibrated uv data are publicly available in FITS format.
机译:使用澳大利亚望远镜紧凑阵列已经获得了整个小型麦哲伦云的详细4.8和8.6?GHz无线电图像,其半功率波束宽度在4.8?GHz时为35英寸,在8.6?GHz时为22英寸。总共3564个镶嵌位置用于覆盖一侧的45个区域。进行了全极化观察。这些图像具有足够的空间分辨率(分别为〜9和6?pc)和灵敏度(3σ为1.5?mJy?beam–1),可以识别大部分单个超新星残留物和H II区域,并与来自帕克斯64?m望远镜,在那个星系中平稳发射的结构。此外,使用第六条天线在4.5-6?km基线上的有限数据可用于区分亮点源(分别<3和2 arcsec),并有助于估计单个源的大小小于完整调查的分辨率。所得的数据库将对统计研究以及与具有相似分辨率的小麦哲伦星云的X射线,光学和红外勘测进行比较具有宝贵的价值。图像和校准的uv数据以FITS格式公开提供。

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