README:
For catalog creation, please read and cite the following:
Ross, A. J., Ho, S., Cuesta, A. J., et al. 2011, MNRAS, 417, 1350 (Catalog creation and elimination of systematic errors)
de Putter, R., Mena, O., Giusarma, E., et al. (2012), arXiv:1201.1909 (Neutrino mass constraints)
For the angular mask, clustering measurement, please read and cite the following:
Ho, S., Cuesta, A., Seo, H. J., et al. (2012), arXiv:1201.2137 (angular power spectrum analysis and cosmological constraints)
For the BAO measurement from this sample, please read and cite the following:
Seo, H. J., Ho, S., White, M., et al. (2012), arXiv:1201.2172 (BAO detection)
Files and what is in them:
gal_catalog_unmasked.gz
This contains *all* of the objects from the SDSS DR8 CAS that satisfy the series of color cuts we
apply.
The columns are:
RA DEC photoz photoz_err_annz prob_gal c_|| d_{\perp} AB_{exp,i} dered_i_cmod ext_i fib2_i objID
Where:
RA: Right ascension in J2000
DEC: Declination in J2000
photoz: Photometric redshift estimate from ANNz
photoz_err: Estimated photometric redshift error from ANNz. *Note*, these are under-estimated, see
discussion in Section 5.3 of Ross et al. (2011)
prob_gal: The estimated probability that an object is a galaxy. We recommend weighting all galaxy
counts by this value.
c_||: The color given by 0.7(g_mod-r_mod)+1.2(r_mod-i_mod-0.18), where _mod signify de-reddened
SDSS model magnitudes
d_{\perp}: The color given by r_mod-i_mod-(g_mod-r_mod)/8
AB_{exp,i}: The axis ratio of the best-fit exponential profile, in the i-band
dered_i_cmod: The de-reddened SDSS 'cmodel' magnitude
ext_i: The galactic extinction in the i-band
fib2_i: The i-band magnitude within a 2'' aperture
objID: The unique SDSS object identification number
mask_North_nside1024.fits and mask_South_nside1024.fits:
Healpix maps of mask for North and South galactic hemispheres, in the nested format and equatorial
coordinates at Nside=1024
If you would like the original mangle mask in full resolution, please email shirley ho : shirleyh@andrew.cmu.edu for more information
starmap_unmasked_nside256.dat:
Pixelized map of the number of stars with 17.5 < i < 19.9, row number is healpix pixel number in
nested format, equatorial coordinates, and Nside=256 and each number is the number of stars in
that pixel.
nzNcp1.6zminzmax.dat:
The estimated true redshift distribution of (masked) galaxies with c_|| > 1.6 and photozs between zmin and zmax
binned in steps Delta z = 0.001