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arXiv · astro-ph/9611206

The Las Campanas Redshift Survey Galaxy-Galaxy Autocorrelation Function

D. L. Tucker·A. Oemler, Jr.·R. P. Kirshner·H. Lin·S. A. Shectman·S. D. Landy·P. L. Schechter·V. Mueller·S. Gottloeber·J. Einasto
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Abstract

Presented are measurements of the observed redshift-space galaxy-galaxy autocorrelation function, xi(s), for the Las Campanas Redshift Survey (LCRS). For separations 2.0/h Mpc < s < 16.4/h Mpc, xi(s) can be approximated by a power law with slope of -1.52 +/- 0.03 and a correlation length of s_0 = (6.28 +\- 0.27)/h Mpc. A zero-crossing occurs on scales of roughly 30 - 40/h Mpc. On larger scales, xi(s) fluctuates closely about zero, indicating a high level of uniformity in the galaxy distribution on these scales. In addition, two aspects of the LCRS selection criteria - a variable field-to-field galaxy sampling rate and a 55 arcsec galaxy pair separation limit - are tested and found to have little impact on the measurement of xi(s). Finally, the LCRS xi(s) is compared with those from numerical simulations; it is concluded that, although the LCRS xi(s) does not discriminate sharply among modern cosmological models, redshift-space distortions in the LCRS xi(s) will likely provide a strong test of theory.

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D. L. Tucker, A. Oemler, Jr., R. P. Kirshner, H. Lin, S. A. Shectman, S. D. Landy, P. L. Schechter, V. Mueller, S. Gottloeber, J. Einasto. 1996-11-25. The Las Campanas Redshift Survey Galaxy-Galaxy Autocorrelation Function. https://doi.org/10.1093/mnras%2F285.1.l5

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