Modelling the dusty universe - II. The clustering of submillimetre-selected galaxies Clustering of submm galaxies
Modelling the dusty universe - II. The clustering of submillimetre-selected galaxies Clustering of submm galaxies
复制标题
尘埃宇宙建模 - II。
DOI：
10.1111/j.1365-2966.2011.19395.x
复制
发表时间：
2011
影响因子：
4.8
通讯作者：
Almeida C
中科院分区：
文献类型：
--
作者：
Almeida C
我们结合联合收割机的galform半分析模型的星系形成，它预测的星星的形成和合并的历史的星系，thegrasilspectrometric代码，它计算的光谱能量分布的星系自相一致，包括再处理辐射的尘埃，和人工神经网络调查的星系的聚类特性选择他们的发射在亚毫米（submm）波长[submm星系（SMG）]。我们使用千禧年模拟来预测SMG的空间和角分布。在红移= 2时，我们发现这些星系是强烈的聚集，对于850 μ m通量密度大于5 mJy的星系，其共动相关长度r0 = 5.6 ± 0.9h−1Mpc，与观测结果一致。我们预测，在更高的红移，这些星系跟踪宇宙的密度和越来越罕见的区域。我们提出了预测的集群的光度，submm颜色和晕和恒星质量的依赖关系。有趣的是，我们预测的相关长度和晕和恒星质量之间的紧密关系，独立的submm光度。
We combine thegalformsemi-analytical model of galaxy formation, which predicts the star formation and merger histories of galaxies, thegrasilspectrophotometric code, which calculates the spectral energy distributions of galaxies self-consistently, including reprocessing of radiation by dust, and artificial neural networks to investigate the clustering properties of galaxies selected by their emission at submillimetre (submm) wavelengths [submm galaxies (SMGs)]. We use the Millennium Simulation to predict the spatial and angular distribution of SMGs. At redshiftz= 2, we find that these galaxies are strongly clustered, with a comoving correlation length ofr0= 5.6 ± 0.9h−1Mpc for galaxies with 850-μ m flux densities brighter than 5 mJy, in agreement with observations. We predict that at higher redshifts, these galaxies trace denser and increasingly rarer regions of the universe. We present the predicted dependence of the clustering on luminosity, submm colour and halo and stellar masses. Interestingly, we predict tight relations between the correlation length and the halo and stellar masses, independent of submm luminosity.