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Title: A Robust Estimator of the Small-Scale Galaxy CorrelationFunction

Abstract

We present a new estimator, {omega}, of the small-scale galaxy correlation function that is robust against the effects of redshift-space distortions and large-scale structures. The estimator is a weighted integral of the redshift space or angular correlation function and is a convolution of the real-space correlation function with a localized filter. This allows a direct comparison with theory, without modeling redshift-space distortions and the large-scale correlation function. This has a number of advantages over the more traditional w{sub p} estimator, including (1) an insensitivity to large-scale structures and the details of the truncation of the line-of-sight integral, (2) a well-localized kernel in {zeta}(r) and (3) being unbinned. We discuss how this estimator would be used in practice, applying it to a sample of mock galaxies selected from the Millennium simulation.

Authors:
; ;
Publication Date:
Research Org.:
Ernest Orlando Lawrence Berkeley NationalLaboratory, Berkeley, CA (US)
Sponsoring Org.:
USDOE
OSTI Identifier:
928010
Report Number(s):
LBNL-62026
Journal ID: ISSN 0035-8711; MNRAA4; R&D Project: PHFNP; BnR: 400409900; TRN: US200816%%979
DOE Contract Number:
DE-AC02-05CH11231
Resource Type:
Journal Article
Resource Relation:
Journal Name: Monthly Notices of the Royal AstronomicalSociety; Journal Volume: 376; Journal Issue: 4; Related Information: Journal Publication Date: 04/2007
Country of Publication:
United States
Language:
English
Subject:
99; ANGULAR CORRELATION; CORRELATION FUNCTIONS; GALAXIES; KERNELS; SIMULATION

Citation Formats

Padmanabhan, Nikhil, White, Martin, and Eisenstein, Daniel J. A Robust Estimator of the Small-Scale Galaxy CorrelationFunction. United States: N. p., 2007. Web. doi:10.1111/j.1365-2966.2007.11554.x.
Padmanabhan, Nikhil, White, Martin, & Eisenstein, Daniel J. A Robust Estimator of the Small-Scale Galaxy CorrelationFunction. United States. doi:10.1111/j.1365-2966.2007.11554.x.
Padmanabhan, Nikhil, White, Martin, and Eisenstein, Daniel J. Tue . "A Robust Estimator of the Small-Scale Galaxy CorrelationFunction". United States. doi:10.1111/j.1365-2966.2007.11554.x.
@article{osti_928010,
title = {A Robust Estimator of the Small-Scale Galaxy CorrelationFunction},
author = {Padmanabhan, Nikhil and White, Martin and Eisenstein, Daniel J.},
abstractNote = {We present a new estimator, {omega}, of the small-scale galaxy correlation function that is robust against the effects of redshift-space distortions and large-scale structures. The estimator is a weighted integral of the redshift space or angular correlation function and is a convolution of the real-space correlation function with a localized filter. This allows a direct comparison with theory, without modeling redshift-space distortions and the large-scale correlation function. This has a number of advantages over the more traditional w{sub p} estimator, including (1) an insensitivity to large-scale structures and the details of the truncation of the line-of-sight integral, (2) a well-localized kernel in {zeta}(r) and (3) being unbinned. We discuss how this estimator would be used in practice, applying it to a sample of mock galaxies selected from the Millennium simulation.},
doi = {10.1111/j.1365-2966.2007.11554.x},
journal = {Monthly Notices of the Royal AstronomicalSociety},
number = 4,
volume = 376,
place = {United States},
year = {Tue Jan 30 00:00:00 EST 2007},
month = {Tue Jan 30 00:00:00 EST 2007}
}