The wigglez dark energy survey: survey design and first data release

Michael John Drinkwater, Russell J Jurek, Chris Blake, David Woods, Kevin Alan Pimbblet, Karl Glazebrook, Rob Sharp, Michael B Pracy, Sarah Brough, Matthew Colless, Warrick John Couch, Scott M Croom, Tamara M Davis, Duncan Alan Forbes, Karl Forster, David G Gilbank, Michael Gladders, Ben Jelliffe, Nick Jones, I-hui LiBarry Madore, Damien Christopher Martin, Gregory B Poole, Todd Small, Emily Wisnioski, Ted Kevin Wyder, Howard K C Yee

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Abstract

The WiggleZ Dark Energy Survey is a survey of 240 000 emission-line galaxies in the distant Universe, measured with the AAOmega spectrograph on the 3.9-m Anglo-Australian Telescope (AAT). The primary aim of the survey is to precisely measure the scale of baryon acoustic oscillations (BAO) imprinted on the spatial distribution of these galaxies at look-back times of 4-8 Gyr. The target galaxies are selected using ultraviolet (UV) photometry from the Galaxy Evolution Explorer satellite, with a flux limit of NUV <22.8 mag. We also require that the targets are detected at optical wavelengths, specifically in the range 20.0 <r <22.5 mag. We use the Lyman break method applied to the UV colours, with additional optical colour limits, to select high-redshift galaxies. The galaxies generally have strong emission lines, permitting reliable redshift measurements in relatively short exposure times on the AAT. The median redshift of the galaxies is z(med) = 0.6. The redshift range containing 90 per cent of the galaxies is 0.2 <z <1.0.
Original languageEnglish
Pages (from-to)1429 - 1452
Number of pages24
JournalMonthly Notices of the Royal Astronomical Society
Volume401
Issue number3
DOIs
Publication statusPublished - 2010
Externally publishedYes

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