This page provides data products associated with the WiggleZ Dark Energy survey measurement of the Baryon Acoustic Oscillations (BAO), as described in Kazin, Koda, Blake & Padmanabhan, arxiv:1401.0358 (2014, submitted to MNRAS) and Blake et al. arxiv:1108.2635 (2011, MNRAS, 418, 1707)

New (Jan 2014) WiggleZ BAO Data Files - Reconstructed

Cosmological constraints Cosmological constraints

Figure credit: Eyal Kazin.

The complete set of BAO correlation functions, pre- and post-reconstruction, can be downloaded from here. The individual files are linked and described below.

Data is given for 6 WiggleZ regions (01, 03, 09, 11, 15, 22 hrs) in 3 different overlapping redshift slices (z=0.2-0.6, 0.4-0.8, 0.6-1.0), matching the datasets analyzed in the final WiggleZ baryon acoustic peak paper Blake et al. (2011, MNRAS, 418, 1707). For each sub-region the following files are given:

Correlation function: xi_**hr*.dat - correlation function measurement and covariance matrix for each sub-region. Format of the file:

  • 1st line: nbin, ngalaxy
  • nbin lines: mean separation [Mpc/h], xi(s), sqrt[Cov(i,i)]
  • nbin x nbin lines: i, j, Cov(i,j)

The covariance matrix is from lognormal realizations, not jack-knife regions.


Combined correlation function: xi_combined*.dat - correlation function measurement for each redshift range combining the measurements in each sub-region, in the same format as above.


Integral constant: wigglez_ic.dat - integral constraint correction which should be added to the measured correlation function, format of the file is:

  • Region [hr],
  • zmin,
  • zmax,
  • integral constraint delta-xi

We are considering adding another 90 random catalogues in the near future. For now the random catalogues used in the previous analysis are available below.

Final (Jan 2011) WiggleZ BAO Data Files

Simplified random catalogue representation
Simplified representation of the BAO Random Catalogues, where
the blue circles are WiggleZ galaxies and the white dots random realisations.

The complete set of BAO random catalogue files can be downloaded from here. The individual files are linked and described below.

Data is given for 6 WiggleZ regions (01, 03, 09, 11, 15, 22 hrs) in 3 different overlapping redshift slices (z=0.2-0.6, 0.4-0.8, 0.6-1.0), matching the datasets analyzed in the final WiggleZ baryon acoustic peak paper Blake et al. (2011, MNRAS, 418, 1707). For each sub-region the following files are given:


Real catalogue: reg**data.dat - data in the following format:
N, 2 [meaning contains N galaxies, header is 2 lines long] For each galaxy the following columns are listed:

  • R.A.(deg),
  • Dec.(deg),
  • redshift,
  • r-mag,
  • ijack = jack-knife region based on dividing galaxies by (x,y,z) positions into equal-volume 3D regions of the sky where the side-length of each region is ~150 Mpc/h
  • weight = FKP weight 1/[1 + n(x)*P_0] where n(x) is the local number density determined from the selection function and P_0 = 5000 (Mpc/h)^3 is the fiducial power spectrum amplitude

 

Random catalogue: reg**rand***.dat - 10 random catalogues in the following format:
N, 2 [meaning contains N galaxies, header is 2 lines long]
For each random source the same columns as above are listed

Each of the random catalogues will usually contain the same number of sources as the data.


Integral constant: wigglez_ic.dat - integral constraint correction which should be added to the measured correlation function, format of the file is:

  • Region [hr],
  • zmin,
  • zmax,
  • integral constraint delta-xi

Correlation function: xi_**hr*.dat - correlation function measurement and covariance matrix for each sub-region. Format of the file:

  • 1st line: nbin, ngalaxy
  • nbin lines: mean separation [Mpc/h], xi(s), sqrt[Cov(i,i)]
  • nbin x nbin lines: i, j, Cov(i,j)

The covariance matrix is from lognormal realizations, not jack-knife regions.


Combined correlation function: xi_combined*.dat - correlation function measurement for each redshift range combining the measurements in each sub-region, in the same format as above.