SDSS DR3 MgII QSO absorption sample
The full on-line catalogue described in Bouche et al. (2006, MNRAS, accepted, astro-ph/0606328) is here (Warning: this file may take some time to load into your browser).
An ASCII version of the table below is available here.
A gzipped tar file containing all the absorption plots is available here (Warning: 66Mb!).

The first column in the catalogue is the FITS file from which the absorption information was derived. The second column is the SDSS unique object
identification number and is linked to the SDSS webpages describing the object. The third column is the SDSS J2000 name derived from the
object co-ordinates. This is linked to a plot of the spectrum with panels showing the details of the absorption around each of the
transitions of interest. The 4th-8th columns are the SDSS point-spread-function magnitudes for the QSO in the u, g, r, i and z
filters. The 9th column is the emission redshift of the QSO as determined by the SDSS. The 10th column is the absorption redshift
derived from the MgII2796 line. Only absorbers with z_abs <= 0.8 were selected. The remaining columns show absorption details for the transitions of
MgII2796, MgII2803, MgI2852, FeII2344, FeII2374, FeII2382, FeII2587, FeII2600, MnII2576, MnII2594, MnII2606, CrII2056, CrII2062, CrII2066,
ZnII2026, ZnII2062, TiII3242, TiII3384, CaII3934, CaII3969, NaI5891 and NaI5897. The quantities reported are the observed
wavelength (lam), the rest-frame equivalent width (W) in Angtroms derived using a Gaussian fit to the absorption as a weighting function, the 1-sigma
error (E) in this equivalent width and the significance (S) of the absorption detection. The latter quantity is derived using a Gaussian weighting function which
has the width of the instrumental resolution, R = 2000.


Last updated: 13th April 2006 by Michael Murphy