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首页> 外文期刊>PASJ: Publications of the Astronomical Society of Japan >MOIRCS deep survey. II. Clustering properties of K-band selected galaxies in GOODS-North region
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MOIRCS deep survey. II. Clustering properties of K-band selected galaxies in GOODS-North region

机译：MOIRCS深入调查。二。 GOODS-North地区K波段选定星系的聚类性质

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摘要

We present the first measurement of clustering properties of low-mass galaxies with a stellar mass down to M-* similar to 10(9)M(circle dot) at 1 < z < 4 in 24.4 arcmin(2) of the GOODS-North region with a depth of K-AB similar to 25. Luminous galaxies in the K-band have a larger correlation length than faint galaxies. For color-selected samples at 2 < z < 4, distant red galaxies with J-K > 1.3 show a large bias of b similar to 7.2 +/- 1.3 on scales of up to theta similar to 100 '' or 3.1 comoving Mpc, while blue galaxies with 0.5 < J-K < 1.3 have a weak clustering signal on large scales, but a possible strong small-scale excess at theta < 10 ''. For massive galaxies with M-* greater than or similar to 10(10)M(circle dot), we estimate the correlation length and bias to be r(0) similar to 4.5 h(-1) Mpc and b = 1.9-3.5, which are much larger than those of low-mass (M-* similar to 10(9)-10(10)M(circle dot)) galaxies. The comparison of our measurements with analytic CDM models constrains the properties of hosting dark halos, and indicates that the low-mass galaxies would be progenitors of galaxies with a typical luminosity of L less than or similar to L-* in the local Universe. The blue galaxies in low-mass samples are more strongly clustered in more massive halos with higher occupation numbers than low-mass red galaxies. This fact suggests an environment effect due to the halo mass on the star-formation activity at high-z.
机译：我们提出了低质量星系团的首次测量，该团团质量低至M- *，类似于GOODS-North的24.4 arcmin（2）中1 1.3的遥远红色星系在b上的大偏差类似于7.2 +/- 1.3，最大theta类似于100英寸或3.1移动Mpc，而蓝色0.5

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