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arXiv 1005.2406astro-ph.CO
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Herschel ATLAS:高低红移下亚毫米星系的角关联函数

Herschel ATLAS: The angular correlation function of submillimetre galaxies at high and low redshift

S. J. Maddox, L. Dunne, E. Rigby, S. Eales, A. Cooray, D. Scott, J. A. Peacock, M. Negrello, D. J. B. Smith, D. Benford, A. Amblard, R. Auld, M. Baes, D. Bonfie… 展开作者

S. J. Maddox, L. Dunne, E. Rigby, S. Eales, A. Cooray, D. Scott, J. A. Peacock, M. Negrello, D. J. B. Smith, D. Benford, A. Amblard, R. Auld, M. Baes, D. Bonfield, D. Burgarella, S. Buttiglione, A. Cava, D. Clements, A. Dariush, G. de Zotti, S. Dye, D. Frayer, J. Fritz, J. Gonzalez-Nuevo, D. Herranz, E. Ibar, R. Ivison, M. J. Jarvis, G. Lagache, L. Leeuw, M. Lopez-Caniego, E. Pascale, M. Pohlen, G. Rodighiero, S. Samui, S. Serjeant, P. Temi, M. Thompson, A. Verma

摘要:

我们目前的测量的角度关联函数的星系选择的第一场的H-ATLAS调查。仔细去除银河卷云的背景是必不可少的,目前在我们的测量中占主导地位的不确定性。对于我们的250微米选择的样本,我们没有检测到显着的聚类,与250微米选择的源大多是z<~ 1的正常星系的预期一致。对于我们选择的350微米和500微米样品,我们检测到相对较强的聚类,在1 '处相关幅度A为0.2和1.2,但具有相对较大的不确定性。对于优先选择z~2-3高红移星系的样本,我们检测到显著的强聚集,从而得到r_0 ~ 7-11 h^{-1} Mpc的估计。我们的聚类测量的斜率非常陡,delta~2。的测量是一致的想法,亚毫米源包括一个低的红移人口的正常星系和一个高红移人口的高度聚集的恒星爆发星系。

英文摘要:

We present measurements of the angular correlation function of galaxies selected from the first field of the H-ATLAS survey. Careful removal of the background from galactic cirrus is essential, and currently dominates the uncertainty in our measurements. For our 250 micron-selected sample we detect no significant clustering, consistent with the expectation that the 250 micron-selected sources are mostly normal galaxies at z<~ 1. For our 350 micron and 500 micron-selected samples we detect relatively strong clustering with correlation amplitudes A of 0.2 and 1.2 at 1', but with relatively large uncertainties. For samples which preferentially select high redshift galaxies at z~2-3 we detect significant strong clustering, leading to an estimate of r_0 ~ 7-11 h^{-1} Mpc. The slope of our clustering measurements is very steep, delta~2. The measurements are consistent with the idea that sub-mm sources consist of a low redshift population of normal galaxies and a high redshift population of highly clustered star-bursting galaxies.

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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