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arXiv 1209.3213astro-ph.CO
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Herschel-ATLAS/GAMA:低红移亚毫米星系的空间成团

Herschel-ATLAS/GAMA: spatial clustering of low-redshift sub-mm galaxies

E. van Kampen, D. J. B. Smith, S. Maddox, A. M. Hopkins, I. Valtchanov, J. A. Peacock, M. J. Michalowski, P. Norberg, S. Eales, L. Dunne, J. Liske, M. Baes, D. … 展开作者

E. van Kampen, D. J. B. Smith, S. Maddox, A. M. Hopkins, I. Valtchanov, J. A. Peacock, M. J. Michalowski, P. Norberg, S. Eales, L. Dunne, J. Liske, M. Baes, D. Scott, E. Rigby, A. Robotham, P. van der Werf, E. Ibar, M. J. Jarvis, J. Loveday, R. Auld, I. K. Baldry, S. Bamford, E. Cameron, S. Croom, S. Buttiglione, A. Cava, A. Cooray, S. Driver, J. S. Dunlop, A. Dariush, J. Fritz, R. J. Ivison, E. Pascale, M. Pohlen, G. Rodighiero, P. Temi, D. G. Bonfield, D. Hill, D. H. Jones, L. Kelvin, H. Parkinson, M. Prescott, R. Sharp, G. de Zotti, S. Serjeant, C. C. Popescu, R. J. Tuffs

摘要:

我们在Herschel-ATLAS科学演示阶段(SDP)观测场中测量了250 μ m波段观测到的低红移(z < 0.3)亚毫米星系的成团特性。我们选择了一个具有高质量光谱红移的样本,该样本是通过可靠地将250微米源与GAMA数据库中的完整星系样本(r < 19.4)匹配而获得的。测量了所有z < 0.3的源以及厚度Δ z=0.05的5个红移切片的角度和空间聚集强度。我们测量的空间聚类长度r_0是光学选择,适度恒星形成(蓝色)星系:我们发现的值约为5百万秒差距。其中一个红移仓包含一个有趣的结构,z = 0.164。

英文摘要:

We have measured the clustering properties of low-redshift (z < 0.3) sub-mm galaxies detected at 250 micron in the Herschel-ATLAS Science Demonstration Phase (SDP) field. We selected a sample for which we have high-quality spectroscopic redshifts, obtained from reliably matching the 250-micron sources to a complete (for r < 19.4) sample of galaxies from the GAMA database. Both the angular and spatial clustering strength are measured for all z < 0.3 sources as well as for five redshift slices with thickness delta z=0.05 in the range 0.05 < z < 0.3. Our measured spatial clustering length r_0 is comparable to that of optically-selected, moderately star-forming (blue) galaxies: we find values around 5 Mpc. One of the redshift bins contains an interesting structure, at z = 0.164.

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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