Dictionary of Nomenclature of Celestial Objects

 talog.  We find it is highly complete for bright (J < 14), northern AGN,    but the completeness drops below 50% for fainter, southern samples and for    sources near the Galactic plane.  This approach also led to the spectroscopic    identification of 10 new AGN in the Kepler field, more than doubling the    number of AGN being monitored by Kepler. This has identified ∼1 bright AGN    every 10 square degrees, permitting construction of AGN samples in any    sufficiently large region of sky.    <p>There are 23 cases where HHMM+DD yields the same identifier for two    sources. We will designate these as HHMM+DDa and HHMM+DDb. We may want to    add sources to this list if there is a new release of the WISE survey, but    no changes are currently anticipated.
     byEDELSON R.
 Astrophys. J., 751, 52 (2012)

    Reliable identifications of active galactic nuclei from the WISE,
    2MASS, and ROSAT all-sky surveys.  University of Maryland
=E=Catalogue in electronic form as <J/ApJ/751/52/>

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