| J/ApJ/554/L129/system | X-ray luminosity-velocity dispersion relation (Mahdavi+, 2001) Catalog of clusters and groups (280 rows) | recno=8 |
| Column | Value | Explain (UCD) | |
| _RAJ2000 | 00 20 30.800 | "h:m:s" | Right ascension (FK5, Equinox=J2000.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.ra) |
| _DEJ2000 | +28 37 39.00 | "d:m:s" | Declination (FK5, Equinox=J2000.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.dec) |
| _RAB1950 | 00 17 53.995 | "h:m:s" | Right ascension (FK4, Equinox=B1950.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.ra) |
| _DEB1950 | +28 21 00.62 | "d:m:s" | Declination (FK4, Equinox=B1950.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.dec) |
| _Glon | 114.767225 | deg | Galactic longitude (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.galactic.lon) |
| _Glat | -33.753506 | deg | Galactic latitude (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.galactic.lat) |
| 8recno | 8 | Record number assigned by the VizieR team. Should Not be used for identification. (meta.record) | |
| Name | Abell 21 | Object name conforming to NED standard (meta.id;meta.main) | |
| NED | NED | ask the NED data-base about this object (meta.ref) | |
| RAJ2000 | 00 20 30.8 | "h:m:s" | (i) Righ ascension (J2000) (pos.eq.ra;meta.main) |
| DEJ2000 | +28 37 39 | "d:m:s" | (i) Declination (J2000) (pos.eq.dec;meta.main) |
| z | 0.095 | redshift (src.redshift) | |
| logsigma | 2.79 | [km/s] | log of velocity dispersion (phys.veloc.dispersion) |
| e_logsigma | 0.13 | [km/s] | rms uncertainty on logsigma (stat.error) |
| logLXbol | 44.91 | [solLum] | log of bolometric X-ray luminosity (H0=50km/s/Mpc) (phys.luminosity;em.X-ray) |
| e_logLXbol | 0.09 | [solLum] | rms uncertainty on logLXbol (stat.error) |
| r_logLXbol | [BFHR ] Reference for LXbol and sigma (Note 1) (meta.ref) | ||
| Com | Other identifications / Comments (Note 2) (meta.note) | ||
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