Updated: 24 March 2011

Paper

Cooksey et al. (2011, ApJ, 729, 87): PDF, online.

Frequency Distributions

For the community's use, we have compiled plain-text tables of the column density and equivalent width frequency distributions fit parameters and integrated results (e.g., Ω_Si+3), for each group (G = 1 and 1+2). We also provide the best-fit parameters and results for the frequency distributions when defined in "pathlength space" (as given in the original paper) and in "redshift space." The former is not directly convertible to the latter; in other words, using dX/dz = (1+z)²/(Ω_M(1+z)³ + Ω_Λ)^0.5 does not work. Since the covariance of the errors in the power-law slope and normalization is difficult to estimate, we simply computed, empirically, the errors of the power-law fit of the frequency distributions for a range of column densities and equivalent widths. These values are stored in an IDL structure with a README, written to a FITS file with mwrfits.pro and readable with e.g. mrdfits.pro. Lastly, we present the errors on all quantities for the 68.3% ("1σ"), 95.4% ("2σ"), and 99.7% ("3&sigma") confidence limits, which are defined by the contour where the likelihood surface is −1.15, −3.15, and −6.1, respectively, from the maximum likelihood.

• Text tables of fit parameters and integrated results with: 1σ, 2σ, and 3σ.
• Frequency distributions and empirically-computed errors in pathlength and redshift space.

Data by sightline

Gzipped tarball includes: normalized spectra, continuum fits, Si IV candidate structure, Monte-Carlo completeness test results

Compiled Monte-Carlo completeness tests

mc_complete.tgz: For use in estimating unblocked pathlength; may change cosmology and/or sightlines included. Will require XIDL (most codes in $XIDL_DIR/HST/CIV). Example call:
IDL>civ_sensitivity_mc,"cmplt_all.lst","cumx.fits",/list,h0=70.,om=0.3,ov=0.7,/siiv