CORRELATIONS AND SCALING IN THE QDOT REDSHIFT SURVEY

被引:34
作者
MARTINEZ, VJ [1 ]
COLES, P [1 ]
机构
[1] UNIV VALENCIA,DEPT MATEMAT APLICADA & ASTON,E-46100 VALENCIA,SPAIN
关键词
GALAXIES; CLUSTERING; FORMATION; LARGE-SCALE STRUCTURE OF UNIVERSE;
D O I
10.1086/175019
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We have calculated the redshift space two-point correlation function, xi(r), for galaxies in the QDOT redshift survey. In the range 1-30 h(-1) Mpc, the data are well described by a power law xi(r) similar or equal to (r/r(0))(-1) with gamma = 1.27 +/- 0.11 and r(0) = 4.82 +/- 0.81 h(-1) Mpc. Furthermore, we find that the sample exhibits clear multifractal scaling properties, but with dimensions different from those extracted from the CfA survey. For example, D-0 = 2.90, D-2 = 2.77 for QDOT on large scales (>10 h(-1) Mpc), compared with 2.1 and 1.3 obtained from the CfA survey; on small scales (<10 h(-1) Mpc), the correlation dimension for QDOT galaxies is D-2 similar or equal to 2.25. The differences in these values between the QDOT data on large and small scales, and between the QDOT and CfA data, provide further evidence that multifractal scaling properties are a useful diagnostic of the dynamics of galaxy clustering.
引用
收藏
页码:550 / 555
页数:6
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