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: http://xmm.vilspa.esa.es/sas/7.0.0/doc/omsrclistcomb/node7.html
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The first column in the table is just a reference number. This is followed by astrometric columns - ie columns for the Right Ascension, declination, position error, galactic longitude and galactic latitude.
There then follows columns for the computed significance (signal-to-noise) of each source for each of the filters present.
Columns for the instrumental magnitudes and colours for each filter, follow.
Columns for the standard magnitudes and errors, for each filter, follow. Since the standard colour may be calculated from more than one instrumental colour, all the standard magnitudes that have been computed are given in seperate columns, and the colour that was used in the calculation is given at the end of the label string. Standard colours and errors then follow.
After this, there are columns for the parameterisation of the shapes of the sources (ie the semi-major and semi-minor axes and the position-angle of the major axis), for eash filter.
Finally, for each filter there are columns for the quality and confusion flags (Please see further below).
XMM-Newton SOC/SSC -- 2006-06-28