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arXiv 1602.08167astro-ph.GA
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SXDF-ALMA 2 arcmin $^2$深度测量:1.1 mm计数

SXDF-ALMA 2 arcmin$^2$ Deep Survey: 1.1-mm Number Counts

Bunyo Hatsukade, Kotaro Kohno, Hideki Umehata, Itziar Aretxaga, Karina I. Caputi, James S. Dunlop, Soh Ikarashi, Daisuke Iono, Rob J. Ivison, Minju Lee, Ryu Mak… 展开作者

Bunyo Hatsukade, Kotaro Kohno, Hideki Umehata, Itziar Aretxaga, Karina I. Caputi, James S. Dunlop, Soh Ikarashi, Daisuke Iono, Rob J. Ivison, Minju Lee, Ryu Makiya, Yuichi Matsuda, Kentaro Motohara, Kouichiro Nakanishi, Kouji Ohta, Ken-ich Tadaki, Yoichi Tamura, Wei-Hao Wang, Grant W. Wilson, Yuki Yamaguchi, Min S. Yun

摘要:

我们报告了1.1毫米的计数显示与阿塔卡马大型毫米/亚毫米阵列(ALMA)在斯巴鲁/XMM-牛顿深调查领域(SXDF)。ALMA的出现使我们能够揭示毫米波长数计数到暗端,而不会混淆源。然而,以前的研究是基于偶然检测到的源在最初针对不同的源领域的合奏,并可能是有偏见的,由于集群的源周围的目标。我们推导出在0.2-2毫焦耳的通量范围内的计数,通过使用23(>= 4西格玛)源检测到的一个连续的2.0弧分$^2$面积的SXDF。的数量计数是一致的误差范围内与以前的结果,这表明来自偶然发现的源的计数没有显着的偏见,虽然可能有字段到字段的变化,由于小的调查区域。利用计数的最佳拟合函数,我们发现在S(1.1mm)> 0.2mJy时,约40%的1.1mm河外背景光被分辨。

英文摘要:

We report 1.1 mm number counts revealed with the Atacama Large Millimeter/submillimeter Array (ALMA) in the Subaru/XMM-Newton Deep Survey Field (SXDF). The advent of ALMA enables us to reveal millimeter-wavelength number counts down to the faint end without source confusion. However, previous studies are based on the ensemble of serendipitously-detected sources in fields originally targeting different sources and could be biased due to the clustering of sources around the targets. We derive number counts in the flux range of 0.2-2 mJy by using 23 (>=4sigma) sources detected in a continuous 2.0 arcmin$^2$ area of the SXDF. The number counts are consistent with previous results within errors, suggesting that the counts derived from serendipitously-detected sources are not significantly biased, although there could be field-to-field variation due to the small survey area. By using the best-fit function of the number counts, we find that ~40% of the extragalactic background light at 1.1 mm is resolved at S(1.1mm) > 0.2 mJy.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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