Open Access
Table C.2.
Descriptions of the columns for the compact X-ray catalogue of SDSS groupsa
| Column | Unit | Description | Example |
|---|---|---|---|
| GROUP_ID (1) | FoF group identification number | 424 | |
| ZSPEC (2) | Group redshift, assigned using median value of clean members | 0.0314 | |
| CODEX (3) | The CODEX cluster candidate unique identifier | 26380 | |
| RA (4) | deg | X-ray detection right ascension (J2000) | 246.9133 |
| DEC (5) | deg | X-ray detection declination (J2000) | 40.9090 |
| LX0124 (6) | erg s−1 | Luminosity in the (0.1-2.4) keV band of the cluster, aperture R500c | 1.0644 × 1043 |
| ELX (7) | erg s−1 | Uncertainty on LX0124 | 1.3159 × 1042 |
| R200C_DEG (8) | deg | Apparent R200c radius of the galaxy cluster | 0.4594 |
| FLUX052 (9) | erg s−1 cm−2 | Galaxy cluster X-ray flux in the 0.5-2.0 keV band | 2.8522 × 10−12 |
| EFLUX052 (10) | erg s−1 cm−2 | Uncertainty on FLUX052 | 3.5263 × 10−13 |
| R_E (11) | arcmin | Apparent radial extent of X-ray emission | 4.29448 |
a The full VAC is available online at CDS
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