Table 1
Main characteristics of the three studied groups.
| Name | RA | Dec | z | LX,bol | R lum. | Vel. disp. | Virial rad. | Radial sampling | |
| (J2000.0) | (J2000.0) | 1042 erg/s | 1011L⊙ | km s-1 | Mpc | % virial rad. | |||
|
|
|||||||||
| RX J1119.7+2126 | 11h19min43.7s | +21deg26′50′′ | 0.061 | 0.84 | 0.8 | 294 | 0.72 | 56% | |
| 1RXS J235814.4+150524 | 23h58min14.4s | +15deg05′24′′ | 0.178 | 14.02 | 3.2 | 254/578 | 0.58/1.31 | ≥ 76% | |
| NGC 6034 | 16h03min32.1s | +17deg11′55′′ | 0.034 | 13.88 | 3.1 | 297 | 0.71 | 56% | |
Notes. Name, coordinates, redshift, bolometric X-ray luminosity (in units of 1042 erg s-1) from Lopes de Oliveira (2010), Jones et al. (2003), and Santos et al. (2007) respectively, converted to the presently adopted cosmology and to bolometric values when needed using web PIMMS, optical R-band total luminosity, velocity dispersion, virial radius, and covered area (in percentage of the virial radius) by the imaging data.
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