The Open UniversitySkip to content
 

The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: measuring structure growth using passive galaxies

Tojeiro, Rita; Percival, Will J.; Brinkmann, Jon; Brownstein, Joel R.; Eisenstein, Daniel J.; Manera, Marc; Maraston, Claudia; McBride, Cameron K.; Muna, Demitri; Reid, Beth; Ross, Ashley J.; Ross, Nicholas P.; Samushia, Lado; Padmanabhan, Nikhil; Schneider, Donald P.; Skibba, Ramin; Sánchez, Ariel G.; Swanson, Molly E. C.; Thomas, Daniel; Tinker, Jeremy L.; Verde, Licia; Wake, David A.; Weaver, Benjamin A. and Zhao, Gong-Bo (2012). The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: measuring structure growth using passive galaxies. Monthly Notices of the Royal Astronomical Society, 424(3) pp. 2339–2344.

DOI (Digital Object Identifier) Link: https://doi.org/10.1111/j.1365-2966.2012.21404.x
Google Scholar: Look up in Google Scholar

Abstract

We explore the benefits of using a passively evolving population of galaxies to measure the evolution of the rate of structure growth between z = 0.25 and 0.65 by combining data from the Sloan Digital Sky Survey (SDSS) I/II and SDSS-III surveys. The large-scale linear bias of a population of dynamically passive galaxies, which we select from both surveys, is easily modelled. Knowing the bias evolution breaks degeneracies inherent to other methodologies, and decreases the uncertainty in measurements of the rate of structure growth and the normalization of the galaxy power spectrum by up to a factor of 2. If we translate our measurements into a constraint on σ8(z = 0) assuming a concordance cosmological model and general relativity (GR), we find that using a bias model improves our uncertainty by a factor of nearly 1.5. Our results are consistent with a flat Λ cold dark matter model and with GR.

Item Type: Journal Item
Copyright Holders: 2012 The Authors
ISSN: 1365-2966
Keywords: dark energy; large-scale structure of Universe; cosmology
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Item ID: 38276
Depositing User: Astrid Peterkin
Date Deposited: 19 Sep 2013 09:00
Last Modified: 07 Dec 2018 10:18
URI: http://oro.open.ac.uk/id/eprint/38276
Share this page:

Metrics

Altmetrics from Altmetric

Citations from Dimensions

Actions (login may be required)

Policies | Disclaimer

© The Open University   contact the OU