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arXiv 1005.2184astro-ph.CO
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HerMES:SPIRE在250、350和500微米处的星系数计数

HerMES: SPIRE galaxy number counts at 250, 350 and 500 microns

S. J. Oliver, L. Wang, A. J. Smith, B. Altieri, A. Amblard, V. Arumugam, R. Auld, H. Aussel, T. Babbedge, A. Blain, J. Bock, A. Boselli, V. Buat, D. Burgarella,… 展开作者

S. J. Oliver, L. Wang, A. J. Smith, B. Altieri, A. Amblard, V. Arumugam, R. Auld, H. Aussel, T. Babbedge, A. Blain, J. Bock, A. Boselli, V. Buat, D. Burgarella, N. Castro-Rodriguez, A. Cava, P. Chanial, D. L. Clements, A. Conley, L. Conversi, A. Cooray, C. D. Dowell, E. Dwek, S. Eales, D. Elbaz, M. Fox, A. Franceschini, W. Gear, J. Glenn, M. Griffin, M. Halpern, E. Hatziminaoglou, E. Ibar, K. Isaak, R. J. Ivison, G. Lagache, L. Levenson, N. Lu, S. Madden, B. Maffei, G. Mainetti, L. Marchetti, K. Mitchell-Wynne, A. M. J. Mortier, H. T. Nguyen, B. O'Halloran, A. Omont, M. J. Page, P. Panuzzo, A. Papageorgiou, C. P. Pearson, I. Perez-Fournon, M. Pohlen, J. I. Rawlings, G. Raymond, D. Rigopoulou, D. Rizzo, I. G. Roseboom, M. Rowan-Robinson, M. Sanchez Portal, R. Savage, B. Schulz, Douglas Scott, N. Seymour, D. L. Shupe, J. A. Stevens, M. Symeonidis, M. Trichas, K. E. Tugwell, M. Vaccari, E. Valiante, I. Valtchanov, J. D. Vieira, L. Vigroux, R. Ward, G. Wright, C. K. Xu, M. Zemcov

摘要:

远红外波长的辐射在宇宙年龄期间从星系探测到的总光中占了很大一部分。赫歇尔提供了一个机会,研究星系的峰值波长的发射。我们的目标是提供一个基准模型的星系人口演化和测试现有的星系模型。在赫歇尔多层河外巡天项目中,我们使用赫歇尔上的SPIRE仪器观测了许多不同区域和灵敏度的场。我们已经确定了星系的数量计数下降到~20 mJy。我们的限制直接计数星系是一致的,虽然更精确,从BLAST波动分析的估计。我们已经发现在<100 mJy时欧几里得标准化计数急剧上升。我们已经直接解决了15%的红外河外背景在波长附近的峰值。

英文摘要:

Emission at far-infrared wavelengths makes up a significant fraction of the total light detected from galaxies over the age of Universe. Herschel provides an opportunity for studying galaxies at the peak wavelength of their emission. Our aim is to provide a benchmark for models of galaxy population evolution and to test pre-existing models of galaxies. With the Herschel Multi-tiered Extra-galactic survey, HerMES, we have observed a number of fields of different areas and sensitivity using the SPIRE instrument on Herschel. We have determined the number counts of galaxies down to ~20 mJy. Our constraints from directly counting galaxies are consistent with, though more precise than, estimates from the BLAST fluctuation analysis. We have found a steep rise in the Euclidean normalised counts at <100 mJy. We have directly resolved 15% of the infrared extra-galactic background at the wavelength near where it peaks.

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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