MOIRCS Deep Survey. I : DRG Number Counts
MOIRCS Deep Survey. I : DRG Number Counts
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DOI：
10.1093/pasj/58.6.951
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发表时间：
2006-10
影响因子：
2.3
通讯作者：
M. Kajisawa;M. Konishi;R. Suzuki;C. Tokoku;Y. Uchimoto;T. Yoshikawa;M. Akiyama;T. Ichikawa;M. Ouchi;K. Omata;I. Tanaka;T. Nishimura;Toru Yamada
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文献类型：
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作者：
M. Kajisawa;M. Konishi;R. Suzuki;C. Tokoku;Y. Uchimoto;T. Yoshikawa;M. Akiyama;T. Ichikawa;M. Ouchi;K. Omata;I. Tanaka;T. Nishimura;Toru Yamada
本文利用斯巴鲁望远镜上的多目标红外相机和光谱仪（MOIRCS）拍摄的极深近红外成像数据，研究了远红星系（DRG）的数量计数。我们在大型天文台起源北深巡天（GOODS-N）中观测到了一个4 × 7弧分^2的场，我们的数据达到J=24.6，K=23.2（5西格玛，织女星星等）。由J-K>2.3选择的DRG在K 22处的面密度为2.35+-0.31 arcmin^-2，比在较亮星等处的计数所预期的要小。结果表明，虽然有许多明亮的星系在222表明，质量依赖的颜色分布，其中大多数低质量星系是蓝色的，而更大质量的星系往往有红色，已经建立在那个时代。
We use very deep near-infrared imaging data taken with Multi-Object InfraRed Camera and Spectrograph (MOIRCS) on the Subaru Telescope to investigate the number counts of Distant Red Galaxies (DRGs). We have observed a 4x7 arcmin^2 field in the Great Observatories Origins Deep Survey North (GOODS-N), and our data reach J=24.6 and K=23.2 (5sigma, Vega magnitude). The surface density of DRGs selected by J-K>2.3 is 2.35+-0.31 arcmin^-2 at K 22 is smaller than that expected from the number counts at the brighter magnitude. The result indicates that while there are many bright galaxies at 2 22 suggest that the mass-dependent color distribution, where most of low-mass galaxies are blue while more massive galaxies tend to have redder colors, had already been established at that epoch.