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The Las Campanas Redshift Survey galaxy--galaxy autocorrelation function

1996/11/25 by D. L. Tucker, A. Oemler, Jr., Augustus Oemler +14 · 99 citations
Economics, Econometrics and Finance · Environmental Science · Physics and Astronomy · #Astrophysics #Autocorrelation #Correlation function (quantum field theory) #Field galaxy #Galaxies: Formation, Evolution, Phenomena #Galaxy #Galaxy formation and evolution #Hydrology and Drought Analysis #Physics #Redshift #Redshift survey #Regional Economic and Spatial Analysis #Statistics #astro-ph

paper · pdf · doi:10.1093/mnras/285.1.l5

published in Monthly Notices of the Royal Astronomical Society 285(1), L5-L9 (Oxford University Press) · 5 pages, LaTeX, 8 postscript figures, and plotting.sty included. Text and figures are also available at http://manaslu.astro.utoronto.ca:80/~lin/JournalPapers/JournalPapers.html and at http://www.aip.de:8080/~tucker/JournalPapers/JournalPapers.html Accepted for publication by MNRAS

arxiv created 1996/11/25 · openalex publication_date 1997/02/11 · arxiv updated 2016/01/13 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

Measurements are presented of the observed redshift-space galaxy—galaxy autocorrelation function, ξgg(s), for the Las Campanas Redshift Survey (LCRS). for separations 2.0 <s < 16.4 h−1 Mpc, ξgg(s) can be approximated by a power law with slope γ= −1.52 ± 0.03 and correlation length s0 = 6.28 ±0.27 h−1 Mpc. A zero-crossing occurs on scales of ∼30–40 h−1 Mpc. On larger scales, ξgg(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 ξgg(s). Finally, the LCRS ξgg(s) is compared with those from numerical simulations; it is concluded that, although the LCRS ξgg(s) does not discriminate sharply among modern cosmological models, redshift-space distortions in the LCRS ξgg(s) will likely provide a strong test of theory.

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