论文标题

快速的Aflagalactic HI调查:试点调查结果的首次查看

Extragalactic HI survey with FAST : First look of the pilot survey results

论文作者

Kang, Jiangang, Zhu, Ming, Ai, Mei, Yu, Haiyang, Sun, Chun

论文摘要

作为第一个数据发布,该试验外层次HI调查,并使用五百米的光圈球形射电望远镜(快速)提取了544个从三维(3D)频谱数据中进行交互式搜索和计算,从提升(r.a。或$α$)和拒绝(dec或$δ$)范围$ 00^{\ rm h} 47^{\ rm m} <\ rm rm rm rm rm rm rm R.A.(j2000)<23^^{\ rm h} 22^{\ rm M} <+43^{\ circ} $。基于基线质量或RFI污染,544 HI检测的S/n大于5标记,代码1至4。此外,我们发现16个在现有的星系目录中没有任何对应物。目录可以通过快速观察未来的HI观察。

As first data release of a pilot extragalactic HI survey with Five-hundred-meter Aperture Spherical radio Telescope (FAST),we extracted 544 extragalaxies from three-dimensional(3D) spectral data to perform interactive searching and computing, yielding global parameters for these detections, extending redshift ranges of HI 21cm line up to z = 0.04 ,which covers part of the sky region in right ascension(R.A. or $α$) and declination(Dec or $δ$) range $00^{\rm h} 47^{\rm m}< \rm R.A.(J2000)<23^{\rm h}22^{\rm m}$ and $+24^{\circ}<\rm Dec.(J2000) <+43^{\circ}$ . The S/N of 544 HI detections are greater than 5 flagged with code 1 to 4 based on baseline qualities or RFI contamination. Besides, we find 16 of which without any counterparts in the existing galaxy catalogs. The catalog can give a guidence for the future HI observation with FAST.

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