**1.0** the primary counterpart is just marginally better than one of the secondaries;

-   **2.1** this secondary counterpart is just marginally worse than the corresponding rank 1.0 primary;

-   **2.2** any other secondary counterpart.

Ranks below 0.2 correspond to single primaries; a rank of 0.9 corresponds to a preferred primary which is better than all its secondaries; a rank of 1 to a nominal primary which is only marginally better than one of the secondaries.

Bright star clean-up\[SecStar\]
-------------------------------

We have associated our counterparts with sources in the SIMBAD and NED databases, and are providing an identifier for the relevant cases. We used this information as one way of partially screening out stars, which are not of interest for AGN studies. We also used the USNO A2.0 catalogue to screen stars, as well as our own spectroscopic redshifts, described in section \[SecOurSpe\].

We assign a star flag of 1 to the counterparts with $z_{spec}<0.003$, i.e. stars confirmed spectroscopically, a flag of 2 to objects that look like a star upon visual inspection, and a flag of 3 when both conditions occur. Visual inspection of thumbnail optical images (see section \[SecMWDP\]) was done systematically for all counterparts with a match to 