Open Access
Table C.3.
Descriptions of the columns for the extended 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 | 0.0310 | |
| AXES (3) | The AXES cluster candidate unique identifier | 93103612 | |
| RA (4) | deg | X-ray detection right ascension (J2000) | 247.2312 |
| DEC (5) | deg | X-ray detection declination (J2000) | 40.9521 |
| LX0124 (6) | erg s−1 | Luminosity in the (0.1-2.4) keV band of the cluster, aperture R500c | 1.9497 × 1043 |
| ELX (7) | erg s−1 | Uncertainty on LX0124 | 1.3893 × 1042 |
| R200C_DEG (8) | deg | Apparent R200c radius of the galaxy cluster | 0.3553 |
| FLUX052 (9) | erg s−1 cm−2 | Galaxy cluster X-ray flux in the 0.5-2.0 keV band | 4.9333 × 10−12 |
| EFLUX052 (10) | erg s−1 cm−2 | Uncertainty on FLUX052 | 3.9893 × 10−13 |
| R_E (11) | arcmin | Apparent radial extent of X-ray emission | 14.9 |
| FLAG (12) | X-ray flux contamination flag | 2 | |
| ACOR (13) | Ratio between the extrapolated and the measured flux | 1.0 | |
| KCOR (14) | K-correction to compute the flux in the rest-frame 0.1–2.4 keV band | 1.64 |
a The full VAC is available online at CDS
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