我们提出的11 $μ$ m选定的源中检测到的早期数据的北极深（NEP深）调查AKARI的属性。数据集覆盖了2.5 ~ 11 $μ$ m的6个波段，曝光时间为10 ~ 20分钟。基于SED的详细建模，该字段位于具有四个滤波器频带的CFHT调查范围内（$g', r', i',z'), enabling us to establish nearly continuous spectral energy distributions (SEDs) for wavelengths ranging from 0.4 to 11 $ μ $m. The main sample studied here consists of 71 sources whose 11 $ μ $m AB magnitudes are equal to or brighter than 18.5 (251 $ μ $Jy), which is complete to more than 90%. The 11 $ μ $m band has an advantage of sampling star forming galaxies with low to medium redshifts since the prominent PAH feature shifts into this band. As expected, we find that the majority (~68%) of 11 $ μ $m bright sources are star forming galaxies at 0.2 < z < 0.7 with $ L_{IR} ~ 10 ^{10} $ -- $ 10^{12} L_{\odot} $。在主样本中还发现了四个红移不同的活动星系核。此外，我们还讨论了几个具有主样本非典型SED的源，包括一个棕矮星候选源、一个陡幂律源、一个平谱天体和一个中等红移的早型星系。
英文摘要：
We present the properties of 11 $μ$m selected sources detected in the early data of the North Ecliptic Pole Deep (NEP-Deep) Survey of AKARI. The data set covers 6 wavelength bands from 2.5 to 11 $μ$m, with the exposure time of 10 ~ 20 minutes. This field lies within the CFHT survey with four filter bands ($g', r', i',z'), enabling us to establish nearly continuous spectral energy distributions (SEDs) for wavelengths ranging from 0.4 to 11 $μ$m. The main sample studied here consists of 71 sources whose 11 $μ$m AB magnitudes are equal to or brighter than 18.5 (251 $μ$Jy), which is complete to more than 90%. The 11 $μ$m band has an advantage of sampling star forming galaxies with low to medium redshifts since the prominent PAH feature shifts into this band. As expected, we find that the majority (~68%) of 11 $μ$m bright sources are star forming galaxies at 0.2 < z < 0.7 with $L_{IR} ~ 10^{10}$ -- $10^{12} L_{\odot}$ based on the detailed modelling of SEDs. We also find four AGNs lying at various redshifts in the main sample. In addition, we discuss a few sources which have non-typical SEDs of the main sample, including a brown dwarf candidate, a steep power-law source, flat spectrum object, and an early-type galaxy at moderate redshift.
A complete sample of radio sources in the North Ecliptic Cap, selected at 38 MHz -- III. further imaging observations and the photometric properties of the sample
本文对北南极帽的一个射电源样品作了进一步的成像观测，并作出了一些新的鉴定。使用来自同伴论文中提出的光谱数据的红移（Lacy et al. 1999 b），讨论了样品中星系的光度特性。结果表明：（1）至少z~0.6的射电星系是良好的标准烛光，与射电光度无关;（2）在0.6~<z~<1的情况下，大部分样品具有与非演化巨椭圆一致的量值和颜色;（3）在较高的红移处，R带对静止坐标系的紫外光通量进行采样，大多数天体的紫外线光度低于预期，如果它们在未被遮蔽的恒星形成区域以恒定的速率从高红移到$z\sim 1$形成恒星星族的话（假设是爱因斯坦-德西特宇宙学）。这些意见的后果进行了简要讨论。
我们用ROSAT全天巡天探测了北极地区一个z=0.087的超星系团。X射线数据极大地提高了我们对这个超星系团特征的理解，与光学发现数据相比，我们对结构空间范围的了解大约增加了一倍，星系团/星系团成员增加了两倍。超星系团是一个丰富的结构，包括至少21个星系团和星系群，12个AGN，61个IRAS星系和各种其他物体。这些成分中的大多数都是用X射线数据发现的，但超星系团也在光学，红外和紫外波段被稳健地探测到。北南极超星系团的长度为129 x 102 x 67（1/h50 Mpc）^[3]，呈扁平状，几乎与我们的视线垂直。由于ROSAT X射线通带的柔软性和大立体角的深度曝光，我们首次在超星系团中探测到了大量的X射线发射星系群。这些结果证明了连续覆盖的X射线观测对研究宇宙结构的有效性。
A wide field survey at the Northern Ecliptic Pole I: Number counts and angular correlation functions in K
我们目前的结果，从多色调查在北极（NEP）。这次巡天的目的是查明ROSAT全天巡天和红外天文卫星巡天中的对应微弱源，并研究其光学/近红外特性。在光学波段B_J、R和近红外波段K观察到了NEP周围的中心平方度。在光学I波段进行了较浅的调查。在这里，我们介绍了K波段调查的结果。讨论了7等< K <17.5等范围内的源计数和K <17.0等星系的角关联函数。NEP的星系计数显示了一个以dlog（N）/dm为单位的亚beuklidean斜率。我们较浅的斜率并不需要星系演化或密度演化的大效应来解释早期调查中发现的陡峭斜率。星系的角关联函数遵循幂律w（θ）= Aθ^-δ，其中A=5.7+-0.8 x 10^-3，δ=0.98+-0.15。这与稳定聚类的预期值一致。
