Open Access
Table A.4
Descriptions of the counterpart catalog columns.
| Column | Units | Description |
|---|---|---|
| Field | Field name | |
| UID | X-ray unique source ID | |
| ID_SRC | X-ray source ID in each field | |
| RA_corr | deg | X-ray Right ascension, corrected using CatWISE2020 |
| DEC_corr | deg | X-ray Declination, corrected using CatWISE2020 |
| RADEC_ERR_corr | arcsec | X-ray combined positional error, corrected |
| CW2_source_name | CatWISE source name | |
| CW2_source_id | CatWISE source ID | |
| CW2_ra | deg | CatWISE RA (ICRS) at reference epoch 2015 |
| CW2_dec | deg | CatWISE DEC (ICRS) at reference epoch 2015 |
| CW2_sigra | arcsec | CatWISE RA error |
| CW2_sigdec | arcsec | CatWISE DEC error |
| CW2_w1mag | mag | CatWISE W1 magnitude |
| CW2_w1sigm | mag | CatWISE W1 magnitude error |
| CW2_w2mag | mag | CatWISE W2 magnitude error |
| CW2_w2sigm | mag | CatWISE W2 magnitude error |
| dist_post | distance posterior probability comparing this association versus no association | |
| p_any | the probability that any of the associations is the correct one | |
| p_i | relative probability of the match | |
| p_X | the probability of being X-ray source measured by machine learning based only on the WISE photometry | |
| match_flag | 1 for the most probable match, 2 for secondary matching solution with  |
|
| Separation | arcsec | Separation between the CatWISE and X-ray positions |
| GA_source_id | Gaia EDR3 unique source ID | |
| GA_ra | deg | Gaia RA (ICRS) at reference epoch 2016 |
| GA_ra_error | mas | Gaia RA error |
| GA_dec | deg | Gaia DEC (deg;ICRS) at reference epoch 2016 |
| GA_dec_error | mas | Gaia DEC error |
| GA_parallax | mas | Gaia absolute stellar parallax |
| GA_parallax_error | mas | Gaia parallax error |
| GA_pmra | mas/year | Gaia proper motion in RA |
| GA_pmra_error | mas/year | Gaia RA proper motion error |
| GA_pmdec | mas/year | Gaia proper motion in DEC |
| GA_pmdec_error | mas/year | Gaia DEC proper motion error |
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