Notes. Columns description: Name: official IAU designation of the cluster. z: cluster redshift. Photometric redshifts are only reported with two digit accuracy. RA/Dec: J2000 coordinates in degrees. N_gal: number of spectroscopic redshifts for cluster members – 0 means that only photometric redshits are available. C₆₀: net XMM counts in the [0.5–2] keV band within the 60′′ aperture used for the sample selection. F₆₀: flux in the [0.5–2] keV band within the 60′′ aperture, in units of 10^-14erg s^-1 cm^-2. r_500,MT: overdensity radius with respect to the critical density in Mpc, obtained from the M_500,WL − T_{300 kpc} scaling relation of Paper IV (see Table 1) and the temperatures measured in Paper III. : rest-frame [0.5–2] keV luminosity in r_500,MT in units of 10⁴³erg s^-1. M_500,MT: mass within r_500,MT in units of 10¹³ M_⊙, obtained from the M_500,WL − T_{300 kpc} scaling relation of Paper IV (see Table 1) and the temperatures measured in Paper III. A ^∗∗ sign after the mass indicates a possible AGN contamination and thus a likely overestimated mass. We do not provide a mass for clusters that show firm evidence of AGN contaminations (although r_500,MT was still derived from T_{300 kpc} using the scaling relation of Paper IV). These clusters are indicated by a ⋆⋆ sign. Ref.: reference to first X-ray detection (as a cluster, when possible). A reference to the first optical/IR detection is also provided when it is prior to the X-ray detection.

Reference. (1) Valtchanov et al. (2004); (2) Willis et al. (2005); (3) Pierre et al. (2006); (4) Pacaud et al. (2007); (6) Willis et al. (2013); (7) Clerc et al. (2014); (8) Šuhada et al. (2012); (9) Böhringer et al. (2004); (10) Voges et al. (2000); (11) Abell et al. (1989); (12) Menanteau et al. (2010); (13) Muzzin et al. (2012); (14) Limousin et al. (2009); (15) Jones et al. (2009).