The WiggleZ Dark Energy Survey: Small-scale clustering of Lyman-break galaxies at z < 1

Blake, Chris, Jurek, Russell J., Brough, Sarah, Colless, Matthew, Couch, Warwick, Croom, Scott, Davis, Tamara, Drinkwater, Michael J., Forbes, Duncan, Glazebrook, Karl, Madore, Barry, Martin, Chris, Pimbblet, Kevin, Poole, Gregory B., Pracy, Michael, Sharp, Rob, Small, Todd and Woods, David (2009) The WiggleZ Dark Energy Survey: Small-scale clustering of Lyman-break galaxies at z < 1. Monthly Notices of Royal Astronomical Society, 395 1: 240-254. doi:10.1111/j.1365-2966.2009.14447.x


Author Blake, Chris
Jurek, Russell J.
Brough, Sarah
Colless, Matthew
Couch, Warwick
Croom, Scott
Davis, Tamara
Drinkwater, Michael J.
Forbes, Duncan
Glazebrook, Karl
Madore, Barry
Martin, Chris
Pimbblet, Kevin
Poole, Gregory B.
Pracy, Michael
Sharp, Rob
Small, Todd
Woods, David
Title The WiggleZ Dark Energy Survey: Small-scale clustering of Lyman-break galaxies at z < 1
Formatted title
The WiggleZ dark energy survey: Small-scale clustering of Lyman-break galaxies at 𝓏 < 1
Journal name Monthly Notices of Royal Astronomical Society   Check publisher's open access policy
ISSN 0035-8711
1365-2966
Publication date 2009-04-01
Year available 2009
Sub-type Article (original research)
DOI 10.1111/j.1365-2966.2009.14447.x
Open Access Status DOI
Volume 395
Issue 1
Start page 240
End page 254
Total pages 14
Editor R. F. Carswell
Place of publication Oxford, United Kingdom
Publisher Oxford University Press
Collection year 2010
Language eng
Formatted abstract
The WiggleZ Dark Energy Survey is a large-scale structure survey of intermediate-redshift ultraviolet-selected (UV-selected) emission-line galaxies scheduled to cover 1000 deg2, spanning a broad redshift range 0.2 < 𝓏 < 1.0. The main scientific goal of the survey is the measurement of baryon acoustic oscillations (BAO) in the galaxy clustering pattern at a significantly higher redshift than previous studies. The BAO may be applied as a standard cosmological ruler to constrain dark energy models. Based on the first 20 per cent of the data set, we present initial results concerning the small-scale clustering of the WiggleZ targets, together with survey forecasts. The WiggleZ galaxy population possesses a clustering length r0= 4.40 ± 0.12 𝒽−1 Mpc, which is significantly larger than 𝓏= 0 UV-selected samples, with a slope γ= 1.92 ± 0.08. This clustering length is comparable to 𝓏= 3 Lyman-break galaxies with similar UV luminosities. The clustering strength of the sample increases with optical luminosity, UV luminosity and reddening rest-frame colour. The full survey, scheduled for completion in 2010, will map an effective volume Veff ≈ 1 Gpc3 (evaluated at a scale k = 0.15 𝒽 Mpc−1) and will measure the angular diameter distance and Hubble expansion rates in three redshift bins with accuracies of ≈5 per cent. We will determine the value of a constant dark energy equation-of-state parameter, 𝓌cons, with a higher precision than existing supernovae observations using an entirely independent technique. The WiggleZ and supernova measurements lie in highly complementary directions in the plane of 𝓌cons and the matter density Ωm. The forecast using the full combination of WiggleZ, supernova and cosmic microwave background (CMB) data sets is a marginalized error Δ𝓌cons = 0.07, providing a robust and precise measurement of the properties of dark energy including cross-checking of systematic errors.
Keyword Surveys - galaxies
Starburst – cosmology
Observations – large-scale structure of Universe
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
2010 Higher Education Research Data Collection
ERA 2012 Admin Only
 
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Created: Thu, 03 Sep 2009, 08:17:37 EST by Mr Andrew Martlew on behalf of Physics