SIMBAD references

We present the first measurements of clustering in the Sloan Digital Sky Survey (SDSS) galaxy redshift survey. Our sample consists of 29,300 galaxies with redshifts 5700km.s^–1≤cz≤39,000km.s^–1, distributed in several long but narrow (2°.5-5°) segments, covering 690 deg². For the full, flux-limited sample, the redshift-space correlation length is approximately 8 h^–1 Mpc. The two-dimensional correlation function ξ(r_p,π) shows clear signatures of both the small-scale, ``fingers-of-God'' distortion caused by velocity dispersions in collapsed objects and the large-scale compression caused by coherent flows, though the latter cannot be measured with high precision in the present sample. The inferred real-space correlation function is well described by a power law, ξ(r)=(r/6.1±0.2h^–1Mpc)^{–1.75±0.03}, for 0.1h^–1Mpc≤r≤16h^–1Mpc. The galaxy pairwise velocity dispersion is σ₁₂~600±100km.s^–1 for projected separations 0.15h^–1Mpc≤r_p≤5h^–1Mpc. When we divide the sample by color, the red galaxies exhibit a stronger and steeper real-space correlation function and a higher pairwise velocity dispersion than do the blue galaxies. The relative behavior of subsamples defined by high/low profile concentration or high/low surface brightness is qualitatively similar to that of the red/blue subsamples. Our most striking result is a clear measurement of scale-independent luminosity bias at r≲10h^–1Mpc: subsamples with absolute magnitude ranges centered on M_*-1.5, M_*, and M_*+1.5 have real-space correlation functions that are parallel power laws of slope ~-1.8 with correlation lengths of approximately 7.4, 6.3, and 4.7 h^–1 Mpc, respectively.