Table 3
Description of the primary columns in the MGQPC catalog.
| Column(s) | Description | Example value (unit) |
|---|---|---|
| SystemName | The pair name designated by the center coordinates | J000004.061-041259.407 |
| DR3Name_A, DR3Name_B | Unique Gaia DR3 identifier | Gaia DR3 2447741272610542720 |
| RA_A, RA_B | Right ascension (J2000.0) | 0.018109143 (degree) |
| Dec_A, Dec_B | Declination (J2000.0) | −4.215430503 (degree) |
| Z_A | Redshift of the known quasar | 1.851 |
| f_0plx_A, f_0plx_B | Probability density of zero parallax | 0.303 |
| f_0pm_A, f_0pm_B | Probability density of zero proper motion | 0.282 |
| Gmag_A, Gmag_B | Gaia G-band magnitude | 20.252 (mag) |
| BPmag_A, BPmag_B | Gaia BP-band magnitude | 20.337 (mag) |
| RPmag_A, RPmag_B | Gaia RP-band magnitude | 19.967 (mag) |
| sep_AB | Angular separation between the two members in the pair | 11.449 (″) |
| seplim | Cross-matching radius | 11.863 (″) |
Notes. The columns with suffix “_A” describe the known quasar, while those with suffix “_B” describe the nearby quasar candidate. The last entry “seplim” represents the separation corresponding to a transverse distance of 100 kpc at the known quasar redshift (see Section 2.2.1 for details).
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