Three-Dimensional Genus Statistics of Galaxies in the SDSS Early Data Release

Chiaki Hikage; Yasushi Suto; Issha Kayo; Atsushi Taruya; Takahiko Matsubara; Michael S Vogeley; Fiona Hoyle; J. Richard Gott; Jon Brinkmann; SDSS Collaboration

doi:10.1093/pasj/54.5.707

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Three-Dimensional Genus Statistics of Galaxies in the SDSS Early Data Release

Journal article

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Peer reviewed

Three-Dimensional Genus Statistics of Galaxies in the SDSS Early Data Release

Chiaki Hikage, Yasushi Suto, Issha Kayo, Atsushi Taruya, Takahiko Matsubara, Michael S Vogeley, Fiona Hoyle, J. Richard Gott, Jon Brinkmann and SDSS Collaboration

Publications of the Astronomical Society of Japan, v 54(5), pp 707-717

25 Oct 2002

DOI: https://doi.org/10.1093/pasj/54.5.707

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Abstract

cosmology: observations

methods: data analysis

galaxies: statistics

large-scale structure of universe

We present the first analysis of three-dimensional genus statistics for the SDSS EDR galaxy sample. Due to the complicated survey volume and the selection function, analytic predictions of the genus statistics for this sample are not feasible; therefore, we construct extensive mock catalogs from $ N$ -body simulations in order to compare the observed data with model predictions. This comparison allows us to evaluate the effects of a variety of observational systematics on the estimated genus for the SDSS sample, including the shape of the survey volume, the redshift distortion effect, and the radial selection function due to the magnitude limit. The observed genus for the SDSS EDR galaxy sample is consistent with that predicted by simulations of a $ \Lambda$ -dominated spatially-flat cold dark matter model. Standard ( $ \Omega_0=1$ ) cold dark matter model predictions do not match the observations. We discuss how future SDSS galaxy samples will yield improved estimates of the genus.

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Title: Three-Dimensional Genus Statistics of Galaxies in the SDSS Early Data Release
Creators: Chiaki Hikage - University of Tokyo
Yasushi Suto - University of Tokyo
Issha Kayo - University of Tokyo
Atsushi Taruya - University of Tokyo
Takahiko Matsubara - Nagoya University
Michael S Vogeley - Drexel University
Fiona Hoyle - Drexel University
J. Richard Gott - Princeton University
Jon Brinkmann - Apache Corporation
SDSS Collaboration
Publication Details: Publications of the Astronomical Society of Japan, v 54(5), pp 707-717
Publisher: Oxford University Press
Resource Type: Journal article
Language: English
Academic Unit: Physics
Web of Science ID: WOS:000178970100010
Scopus ID: 2-s2.0-0036455837
Other Identifier: 991019168482504721

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Collaboration types: Domestic collaboration; International collaboration
Web of Science research areas: Astronomy & Astrophysics

Three-Dimensional Genus Statistics of Galaxies in the SDSS Early Data Release

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