We make public our catalogue of X-ray selected AGN in the XMM-XXL north field as presented in Menzel et al. (2016) and Liu et al. (2016). The X-ray selected AGN sample is compiled from the wide-area and shallow XXL-North survey part of the XMM-XXL survey (Pierre et al., 2015), which covers a total area of about 50 deg2 split into two nearly equal size fields with an exposure time of about 10 ks per XMM pointing.
We created a source catalogue of the equatorial subregion which overlaps with the W1 field in the Canada-France-Hawaii Legacy Survey> (CFHTLS) and extends to about 25 deg2 the area covered by the original 11deg2 XMM-LSS survey (Clerc et al. 2014). We detected 8445 point-like X-ray sources above a limiting flux of F0.5-10 keV = 1⋅10-15 erg cm-2s-1. The X-ray sources have been matched to optical (SDSS) and infrared (WISE) counterparts based on Likelihood-Ratio method as applied in Georgakakis & Nandra (2011). The SDSS-counterparts have been retrieved from SDSS-DR8 (Aihara et al., 2011), together with their probability to be QSO as defined in the XDQSO-catalogue by Bovy et al. (2011). The WISE-counterparts are taken from the allWISE data release.

In a ∼18 deg2 area of the northern XMM-XXL field, by mean of two dedicate ancillary programmes described in DR12 (Alam et al., (2015), and Paris et al. (2015), submitted), we followed up 3042 X-ray sources brighter than r = 22.5 mag with the BOSS spectrograph (SDSS). The spectra have been visually inspected and yielded a reliable redshift measurement for 2578 AGN in the redshift range z = 0.02-5.0, with luminosities 1039 erg s-1 < L0.5-10 keV < 1046 erg s-1. The spectroscopic catalog, presentend in Menzel et al. (2016), is currently the largest published spectroscopic sample of X-ray selected AGN in a contiguous area.

Through this website we provide:
XMM-XXL north area with sky coordinates of XMM-Newton sources and associated BOSS observed targets: We extracted 8445 point-like X-ray sources (grey) over a ∼ 18 deg2 area of the XMM-XXL north. At the time of our reduction (January 2012), the pointing of XMM-Newton in the XMM-XXL north area was not yet completed. The spectroscopic follow-up of the XMM-Newton sources with BOSS has been performed during two ancillary programmes (blue markers) and completed by former targets from BOSS-DR10 (purple markers).