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VERONCAT - Veron Catalog of Quasars & AGN, 12th Edition |
HEASARC Archive |
The 12th includes positions and redshifts, as well as photometry (U, B, and V) and 6-cm and 20-cm flux densities, when available. 141 objects once proposed but now rejected as quasars are NOT included in the online version of this catalog: their names and positions are listed in the Rejected_Quasars section of this help file. This HEASARC table also does NOT contain the additional information on gravitationally lensed quasars and quasar pairs listed in Tables 2 and 3 of the published paper: these tables are available in electronic form at ftp://cdsarc.u-strasbg.fr/pub/cats/VII/248/
The present edition of this catalog contains quasars with measured redshift known prior to January 1st, 2006.
Quasars and Active Galactic Nuclei (12th Ed.) Veron-Cetty M.P., Veron P. <Astron. Astrophys. 455, 773 (2006)> =2006A&A...455..773V
Previous editions of this catalog are listed below:
1st Edition, Veron-Cetty M.P., Veron P., 1984, ESO Scientific Report 1. 2nd Edition, Veron-Cetty M.P., Veron P., 1985, ESO Scientific Report 4. 3rd Edition, Veron-Cetty M.P., Veron P., 1987, ESO Scientific Report 5. 4th Edition, Veron-Cetty M.P., Veron P., 1989, ESO Scientific Report 7. 5th Edition, Veron-Cetty M.P., Veron P., 1991, ESO Scientific Report 10. 6th Edition, Veron-Cetty M.P., Veron P., 1993, ESO Scientific Report 13. 7th Edition, Veron-Cetty M.P., Veron P., 1996, ESO Scientific Report 17. 8th Edition, Veron-Cetty M.P., Veron P., 1998, ESO Scientific Report 18. 9th Edition, Veron-Cetty M.P., Veron P., 2000, ESO Scientific Report 19. 10th Edition, Veron-Cetty M.P., Veron P., 2001, Astron. Astrophys. 374, 92 11th Edition, Veron-Cetty M.P., Veron P., 2003, Astron. Astrophys. 412, 399A complete list of the references that are given as numerical codes in this database can be obtained via anonymous FTP or the Web at ftp://cdsarc.u-strasbg.fr/pub/cats/VII/248/refs.dat.gz
Name RA (2000) Dec Original Mag New Ref Code RA (1950) Dec Redshift & Class Class for Class *Q 2357-005A 0 0 12.7 - 0 14 34 *2.83 Q 18.0 G 2142 23 57 38.9 - 0 31 16 *Q 2357+009 0 0 26.5 1 14 0 *3.05 Q 17.0 * 2142 23 57 52.7 0 57 18 *Q 2358-011 0 0 35.3 - 0 51 22 *3.22 Q 17.5 * 2142 23 58 1.5 - 1 8 4 *Q 2358+029A 0 1 1.4 3 14 11 *3.13 Q 17.5 * 2142 23 58 27.6 2 57 29 *Q 2358+004 0 1 12.9 0 44 43 *2.94 Q 17.0 * 2142 23 58 39.1 0 28 1 *UM 194 0 1 16.6 0 2 7 O 0.780 Q O19.1 * 1133 23 58 42.8 - 0 14 35 *Q 2359+026 0 2 9.7 2 54 24 *3.14 Q 17.0 * 2142 23 59 35.9 2 37 42 *Q 0002+022 0 4 47.8 2 29 16 *3.17 Q 18.0 * 2142 0 2 14.0 2 12 34 *Q 0002+030A 0 5 11.8 3 19 36 *3.15 Q 18.5 * 2142 0 2 38.0 3 2 54 *Q 0003+011B 0 5 56.8 1 25 32 *3.17 Q 18.0 * 2142 0 3 23.0 1 8 50 *Q 0003+012B 0 6 32.8 1 29 17 *3.12 Q 18.0 * 2142 0 3 59.0 1 12 35 *Q 0004-004 0 6 41.0 - 0 8 45 *3.12 Q 17.5 * 2142 0 4 7.2 - 0 25 27 *Q 0004+014 0 6 53.2 1 45 56 *3.17 Q 18.5 * 2142 0 4 19.4 1 29 14 *Q 0005+003 0 8 7.9 0 39 54 *3.00 Q 17.5 G 2142 0 5 34.1 0 23 12 *Q 0008+010 0 10 42.9 1 18 41 *3.12 Q 19.0 * 2142 0 8 9.1 1 2 0 *Q 0009+027B 0 11 42.4 3 0 28 *3.17 Q 16.0 * 2142 0 9 8.5 2 43 47 *Q 0009-003 0 12 2.0 - 0 5 8 *3.02 Q 18.0 * 2142 0 9 28.2 - 0 21 49 *Q 0011-012A 0 13 37.4 - 0 58 9 O *2.23 Q 17.0 * 2142 0 11 3.7 - 1 14 50 *Q 0011-002A 0 13 59.0 0 3 20 *3.10 Q 17.5 G 2142 0 11 25.2 - 0 13 21 *Q 0011+016 0 14 13.5 1 57 42 *3.22 Q 17.5 * 2142 0 11 39.6 1 41 2 *Q 0012+011 0 15 8.5 1 24 27 *1.67 Q 18.0 * 2142 0 12 34.6 1 7 47 *2QZ J002529-3104 0 25 29.9 -31 4 33 O BL *19.45 * 1260 0 23 0.4 -31 21 10 *Q 0036-3954 0 39 3.3 -39 37 31 O *0.45 Q *17.32 * 498 0 36 38.7 -39 54 0 *Q 0036-2939 0 39 27.4 -29 23 20 O *2.16 Q *19.54 * 504 0 36 59.9 -29 39 48 *Q 0037-3103 0 39 39.0 -30 47 1 O *2.96 Q *19.90 * 502 0 37 11.9 -31 3 29 *SDSSp J00470-0048 0 47 5.9 - 0 48 19 O 0.546 Q 18.96 ? 1890 0 44 32.3 - 1 4 41 *SDSS J00485+0017 0 48 30.3 0 17 52 O BL 18.17 * 1133 0 45 56.5 0 1 31 *Q 0047-3150 0 50 21.9 -31 34 26 O *2.02 Q *19.05 * 504 0 47 56.9 -31 50 45 *Q 0048-2952 0 50 33.2 -29 36 14 O 1.244 Q *20.19 * 502 0 48 7.6 -29 52 33 *Q 0048-2939 0 50 38.0 -29 22 45 O *2.20 Q *18.77 * 502 0 48 12.3 -29 39 4 *CT 193 0 54 43.3 -28 31 19 O 0.639 Q *19.5 * 502 0 52 18.0 -28 47 34 *Q 0053-3101 0 55 24.9 -30 45 9 O *2.20 Q *17.96 * 504 0 53 0.5 -31 1 23 *SGP4:10 0 57 54.2 -27 27 0 O 0.907 Q *20.6 * 502 0 55 29.0 -27 43 12 *Q 0055-3004 0 58 22.6 -29 48 18 O *2.10 Q *18.98 * 504 0 55 58.3 -30 4 29 *Q 0056-2847 0 58 46.3 -28 31 35 O 0.800 Q *20.49 * 502 0 56 21.6 -28 47 46 *SGP1:22 0 59 16.3 -28 45 38 O 1.281 Q *20.8 * 502 0 56 51.8 -29 1 48 *CS 142 1 0 15.9 -28 4 52 O *2.30 Q 19.8 * 502 0 57 51.3 -28 21 1 *Q 0058-4134 1 0 40.6 -41 18 29 O *1.29 Q *17.40 * 498 0 58 22.0 -41 34 38 *SDSS J01038-1002 1 3 52.2 -10 2 30 O BL 18.91 * 1133 1 1 21.7 -10 18 35 *QSO 0111-2838 1 13 29.1 -28 22 22 O 4.042 Q 19.75 G 1953 1 11 6.6 -28 38 15 *Q 0117-378 1 19 56.8 -37 37 28 *2.25 Q 20.0 ? 1044 1 17 40.5 -37 53 12 *UM 100 1 22 56.2 2 57 32 O 3.272 Q 18. G 2438 1 20 21.3 2 41 53 *Q 0121-3758 1 23 25.9 -37 42 24 O *2.21 Q O19.7 * 1044 1 21 10.4 -37 58 2 *Q 0123-3713 1 25 27.1 -36 58 6 O *2.13 Q O19.7 * 1044 1 23 11.5 -37 13 41 *Q 0133-4218 1 35 15.9 -42 3 28 *2.68 Q *19.84 * 580 1 33 6.3 -42 18 47 *Q 0133-4217 1 35 22.8 -42 2 21 *2.58 Q *20.25 * 580 1 33 13.2 -42 17 40 *UM 348 1 38 12.2 1 3 52 BL 17. * 2206 1 35 38.0 0 48 38 *SDSS J01438+0021 1 43 49.2 0 21 27 O 1.317 18.28 ? 1891 1 41 15.3 0 6 24 *RXS J01538+0152 1 53 49.9 1 52 44 O 0.127 Q O15.1 * 2222 1 51 15.2 1 38 0 *Q J02469-2948 2 46 59.6 -29 48 22 O BL *19.90 * 1260 2 44 51.3 -30 0 53 *SDSS J02493-0809 2 49 21.6 - 8 9 57 O 1.276 19.98 ? 1891 2 46 54.3 - 8 22 21 *2QZ J025425-3158 2 54 26.0 -31 58 34 O BL *19.38 * 1260 2 52 21.0 -32 10 43 *SDSS J02548-0717 2 54 48.5 - 7 17 35 O 2.937 19.09 ? 1891 2 52 20.7 - 7 29 43 PKS 0254-671 2 55 13.5 -66 57 1 O *2.23 Q 18.5 * 2220 2 54 28.8 -67 9 6 *SDSS J03130-0616 3 13 3.3 - 6 16 0 O BL 20.27 * 1133 3 10 35.1 - 6 27 11 *2QZ J031435-3105 3 14 35.2 -31 5 44 O BL *18.26 * 1260 3 12 31.7 -31 16 50 *SDSS J03174-0716 3 17 29.7 - 7 16 44 O BL 20.05 * 1133 3 15 2.5 - 7 27 41 *SDSS J03211-0700 3 21 8.3 - 7 0 31 O BL 19.91 * 1133 3 18 40.9 - 7 11 15 *SDSS J03244-0046 3 24 28.8 - 0 46 14 O 0.213 S1 19.31 ? 1891 3 21 55.8 - 0 56 47 *SDSSp J03361-0007 3 36 6.7 - 0 7 54 O 0.431 S2 20.37 ? 1891 3 33 33.1 - 0 17 47 *QSF3:22 3 40 59.9 -44 14 20 O 0.719 Q 20.6 * 1910 3 39 19.6 -44 23 54 *SDSS J04121-0540 4 12 9.3 - 5 40 31 O BL 19.24 * 1133 4 9 41.5 - 5 48 10 MCG -01.12.005 4 25 51.3 - 8 33 38 O 0.039 BL 15.9 G 178 4 23 26.8 - 8 40 23 *SDSS J09106-0042 9 10 40.3 - 0 42 26 O 1.036 21.08 * 1891 9 8 7.0 - 0 30 9 *SDSS J09325+5536 9 32 33.5 55 36 20 O 0.911 20.24 ? 1891 9 29 0.4 55 49 37 *SDSS J09389+0209 9 38 59.3 2 9 24 O 1.410 19.96 ? 1891 9 36 24.0 2 22 59 *2QZ J101226+0037 10 12 26.1 0 37 3 O 0.686 S1 *20.32 * 1133 10 9 52.0 0 51 54 *Q J10262-0006 10 26 15.4 - 0 6 30 O BL *19.40 * 1260 10 23 41.6 0 8 47 *2QZ J102702+0034 10 27 2.3 0 34 3 O BL *19.52 * 1260 10 24 28.2 0 49 21 *SDSS J10327-0032 10 32 43.4 - 0 32 43 O BL 20.23 * 1133 10 30 9.8 - 0 17 15 *SDSS J10381-0036 10 38 9.2 - 0 36 22 O 1.490 17.09 * 1133 10 35 35.6 - 0 20 45 *2QZ J104134+0037 10 41 34.7 0 37 11 O BL *19.82 * 1133 10 39 0.6 0 52 53 *QNB1:46 10 42 29.5 1 32 22 O 0.716 Q *21.1 * 504 10 39 55.1 1 48 5 *Q J10453+0026 10 45 19.7 0 26 15 O BL *18.68 * 1133 10 42 45.7 0 42 2 *SDSS J10473+0007 10 47 18.3 0 7 18 O 1.235 17.59 * 1133 10 44 44.4 0 23 8 *2QZ J105037-0115 10 50 37.8 - 1 15 57 O BL *19.44 * 1260 10 48 4.4 - 1 0 2 *Q J10539-0055 10 53 55.2 - 0 55 38 O BL *19.53 * 1260 10 51 21.7 - 0 39 39 *2QZ J105632-0010 10 56 32.1 - 0 10 42 O BL *18.58 * 1133 10 53 58.4 0 5 20 *Q J11067+0007 11 6 44.5 0 7 17 O BL *19.86 * 1260 11 4 10.7 0 23 31 *Q J11401-0029 11 40 10.5 - 0 29 37 O BL *19.90 * 1133 11 37 36.8 - 0 12 59 *SDSS J11453-0247 11 45 21.6 - 2 47 57 O BL 18.63 * 1260 11 42 48.1 - 2 31 17 *Q J12059-0042 12 5 58.2 - 0 42 16 O BL *19.11 * 1260 12 3 24.4 - 0 25 34 *Q J12080-0042 12 8 1.9 - 0 42 20 O BL *18.96 * 1260 12 5 28.1 - 0 25 38 MC 1210+121 12 12 33.0 11 51 11 O BL 18.0 * 1847 12 9 59.9 12 7 52 *UM 493 12 22 6.5 - 1 6 38 O BL 17. * 357 12 19 32.6 - 0 50 0 *Q J12236-0156 12 23 38.1 - 1 56 19 O BL *19.22 * 1260 12 21 4.1 - 1 39 42 *2QZ J124034-0145 12 40 35.0 - 1 45 0 O BL *19.47 * 1260 12 38 0.9 - 1 28 33 *Q 1250-0700 12 53 21.8 - 7 16 54 O 0.097 Q 16.43 * 2384 12 50 46.1 - 7 0 38 *UM 531 12 58 17.3 0 7 11 O *2.08 Q O18.5 * 504 12 55 43.6 0 23 22 *Q J13001-0226 13 0 9.9 - 2 26 1 O BL *19.22 * 1133 12 57 35.4 - 2 9 52 *2QZ J130014+0135 13 0 14.4 1 35 39 O BL *20.17 * 1133 12 57 41.1 1 51 48 *2QZ J130023+0138 13 0 23.2 1 38 51 O BL *20.01 * 1133 12 57 50.0 1 55 0 PKS 1301-192 13 4 34.8 -19 32 44 O BL 18. * 2220 13 1 54.6 -19 16 40 *2QZ J130639+0113 13 6 39.4 1 13 40 O BL *19.33 * 1133 13 4 6.1 1 29 42 *BG 57 11 13 7 9.5 29 6 7 *3.05 Q 20.1 * 615 13 4 46.3 29 22 8 *BG 57 15 13 7 32.5 29 15 46 *2.86 Q 20.8 * 615 13 5 9.5 29 31 46 *BG 57 17 13 7 42.5 29 22 5 O *3.32 Q *19.16 13 5 19.5 29 38 5 *BG 57 20 13 7 59.3 29 28 47 O *2.25 Q *18.54 G 258 13 5 36.4 29 44 47 *BG 57 21 13 8 3.5 29 30 20 O *3.24 Q *18.78 13 5 40.7 29 46 20 *BG 57 26 13 8 13.1 29 20 42 O *2.90 Q *18.40 13 5 50.2 29 36 41 *CSO 823 13 8 13.5 29 32 56 O *2.95 Q *17.83 * 615 13 5 50.7 29 48 55 *BG 57 42 13 9 12.7 29 31 1 *2.82 Q 17.6 13 6 50.1 29 46 59 *BG 57 43 13 9 12.8 29 20 20 *0.72 Q 19.5 13 6 50.1 29 36 18 *BG 57 45 13 9 27.1 29 5 37 *2.42 Q 21.5 13 7 4.3 29 21 35 *AH 23 13 9 40.1 29 13 36 O *1.79 Q *19.62 * 1154 13 7 17.4 29 29 33 *CSO 832 13 10 1.4 29 23 7 *2.95 Q 16.6 1817 13 7 38.8 29 39 4 *Q 1311+4635 13 13 22.8 46 19 30 0.001 R18.82 H2 13 11 10.8 46 35 22 *Q J13165-0028 13 16 35.1 - 0 28 10 O BL *19.82 * 1260 13 14 1.2 - 0 12 22 *UM 566 13 19 55.1 1 52 58 O ? 18. * 504 13 17 22.1 2 8 42 *UM 571 13 23 59.8 2 11 8 O *1.33 Q 18.1 * 934 13 21 27.0 2 26 45 *SDSSp J13247-021713 24 44.1 - 2 17 46 O 2.264 21.72 ? 1891 13 22 9.4 - 2 2 10 *2E 1326+1200 13 28 35.7 11 45 18 A BL 19. 13 26 7.2 12 0 48 *2QZ J132849-0024 13 28 49.1 - 0 24 27 O BL *19.56 * 1260 13 26 15.2 - 0 8 57 *2QZ J133703-0039 13 37 3.1 - 0 39 10 O BL *19.08 * 1260 13 34 29.1 - 0 23 54 *SDSS J13443+6702 13 44 19.4 67 2 55 O BL 19.81 * 1133 13 42 55.0 67 17 56 *Q J14003+0019 14 0 21.0 0 19 56 O BL *19.89 * 1260 13 57 47.5 0 34 26 Q J14021-0130 14 2 7.7 - 1 30 33 O BL *19.71 * 1518 13 59 33.1 - 1 16 7 *SDSS J14065+0148 14 6 32.4 1 48 38 O 1.084 18.53 * 1133 14 3 59.8 2 2 54 *NPM1G-04.0478 14 7 30.8 - 5 10 10 O 0.380 Q 15.79 G 1433 14 4 53.9 - 4 55 56 *Q J14092-0000 14 9 16.4 - 0 0 12 O 2.128 BL *18.84 * 1133 14 6 42.7 0 13 58 *2QZ J142127-0200 14 21 28.0 - 2 0 33 O BL *18.85 * 1260 14 18 53.0 - 1 46 53 SDSS J14428+0015 14 42 48.5 0 15 40 O 1.123 21.39 ? 1891 14 40 15.0 0 28 23 *SDSS J15116+0155 15 11 36.7 1 55 18 O 2.229 20.20 * 1133 15 9 4.7 2 6 34 MC 1620+103 16 22 33.9 10 13 8 BL 18.4 * 357 16 20 11.1 10 20 6 *SDSS J16338+4311 16 33 53.2 43 11 10 O 1.058 21.05 ? 1891 16 32 17.8 43 17 21 *SDSS J16556+3722 16 55 38.5 37 22 47 O 0.543 18.64 * 1133 16 53 53.8 37 27 28 *SBS 1716+581 17 17 22.3 58 6 0 O 0.580 Q 16.91 * 1133 17 16 34.0 58 9 7 *SDSS J17210+5324 17 21 1.0 53 24 33 O 2.762 19.35 * 1133 17 19 55.9 53 27 25 *SDSS J21186-0803 21 18 41.0 - 8 3 47 O BL 19.25 * 1133 21 16 1.0 - 8 16 27 *Q 2119-4509 21 23 9.2 -44 56 38 O 3.79 Q R19.20 * 21 19 52.7 -45 9 30 SDSS J21273-0737 21 27 23.0 - 7 37 27 O 0.893 19.35 ? 1891 21 24 43.6 - 7 50 31 *Q 2127.1-1577 21 29 49.4 -15 33 14 3.2 Q 16.5 * 2220 21 27 4.1 -15 46 25 *2QZ J215530-3121 21 55 30.5 -31 21 48 O BL *18.70 * 1260 21 52 35.3 -31 36 3 *Q 2154-204U 21 56 46.6 -20 9 42 A 1.882 Q ? 1487 21 54 0.0 -20 24 0 *Q J22052-3115 22 5 15.9 -31 15 38 O BL *19.58 * 1260 22 2 22.3 -31 30 14 *2QZ J233139-2720 23 31 39.7 -27 20 18 O BL *18.83 * 1260 23 29 1.4 -27 36 52 *Q 2348-011A 23 50 35.7 - 0 52 20 *3.07 Q 18.5 * 2142 23 48 1.9 - 1 9 1 *Q 2349-012 23 51 47.2 - 0 59 55 *3.12 Q 16.5 * 2142 23 49 13.4 - 1 16 36 *Q 2350-014 23 52 44.3 - 1 9 11 *1.46 Q 18.0 * 2142 23 50 10.5 - 1 25 52 *Q 2350-019A 23 52 45.1 - 1 41 14 *3.10 Q 18.5 * 2142 23 50 11.2 - 1 57 55 *Q 2356+007 23 58 38.4 1 4 3 *3.17 Q 18.5 * 2142 23 56 4.6 0 47 21
Name
The most common name of the object.
RA
The Right Ascension of the object (given to a precision of 0.1 seconds
of time in the original table).
Dec
The Declination of the object (given to a precision of 1 arcsecond
in the original table).
LII
The Galactic Longitude of the object.
BII
The Galactic Latitude of the object.
Position_Flag
This flag is related to the accuracy and source for the
quoted position:
O = optical position with an accuracy better than 1 arcsecond R = radio position with an accuracy better than 1 arcsecond A = approximate position
Radio_Detect
This flag is 'Y' if the object has been detected in the radio
and 'N' if it has not been detected in the radio.
Flux_6_cm
The flux density at 6 cm (5 GHz) in milliJanskies (mJy).
Ref_Flux_6_cm
Numerical code of the reference for the 6-cm flux density.
A complete list of the references that are given as numerical codes
in this database can be obtained via anonymous FTP or the Web at
ftp://cdsarc.u-strasbg.fr/pub/cats/VII/248/refs.dat.gz
Flux_20_cm
The flux density at 20 cm (1.4 GHz) in milliJanskies (mJy).
Ref_Flux_20_cm
Numerical code of the reference for the 20-cm flux density.
A complete list of the references that are given as numerical codes
in this database can be obtained via anonymous FTP or the Web at
ftp://cdsarc.u-strasbg.fr/pub/cats/VII/248/refs.dat.gz
Redshift_Flag
This flag is set to 'E' if the redshift was estimated by
slitless spectroscopy, and is set to '>' if the quoted redshift is a
lower limit.
Redshift
The redshift of the object.
Object_Type
A code created by the catalog authors describing the
classification of the object:
S1: Seyfert 1 spectrum S1h: broad polarized Balmer lines detected S1i: broad Paschen lines observed in the infrared S1n: narrow-line Seyfert 1 S1.0, S1.2, S1.5, S1.8, S1.9: intermediate Seyfert galaxies S2: Seyfert 2 spectrum S2?: probable Seyfert 2 S3: Seyfert 3 or liner S3b: Seyfert 3 or liner with broad Balmer lines S3h: Seyfert 3 or liner with broad polarized Balmer lines detected S : unclassified Seyfert S?: possibly a Seyfert H2: nuclear HII region HP: high optical polarization (>3%) BL: confirmed BL Lac object BL?: probable BL Lac object ?: questionable BL Lac object Q2: type-2 quasar
Default object_type values are set to the following for objects in tables qso.dat, bllac.dat and agn.dat, if none were explicitly given in the original tables:
Table qso.dat = Q : quasar Table bllac.dat2 = B?: presumed BL Lac object Table agn.dat = AG: unspecified type of active galaxy
App_Mag_Flag
This flag is 'V' for a visual magnitude; 'P' for a photographic magnitude;
'B' for a blue magnitude; 'R' for a red magnitude, 'I', 'J', or 'K' for
infrared-band magnitudes; or 'O' for a magnitude from a photographic O- or J-
plate.
App_Mag
The apparent magnitude of the object, where the type of magnitude
is specified by the value of the app_mag_flag parameter.
BV_Color
The (B-V) color of the object, when known.
UB_Color
The (U-B) color of the object, when known.
Abs_Mag
The absolute magnitude of the object (a Hubble constant of
50 km/s/Mpc and a deceleration parameter of 0 have been assumed).
Ref_Chart
Numerical code of the reference for the finding chart.
A complete list of the references that are given as numerical codes
in this database can be obtained via anonymous FTP or the Web at
ftp://cdsarc.u-strasbg.fr/pub/cats/VII/248/refs.dat.gz
Ref_App_Mag
Numerical code of the reference for the photometry.
A complete list of the references that are given as numerical codes
in this database can be obtained via anonymous FTP or the Web at
ftp://cdsarc.u-strasbg.fr/pub/cats/VII/248/refs.dat.gz
Ref_Redshift
Numerical code of the reference for the redshift.
A complete list of the references that are given as numerical codes
in this database can be obtained via anonymous ftp or the Web at
ftp://cdsarc.u-strasbg.fr/pub/cats/VII/248/refs.dat.gz
Broad_Type
The broad Veron object classification, a parameter
created by the HEASARC which is based on the table in which it was
listed in the original reference: objects in the qso.dat table
have been assigned a value of 'QSO', those in bllac.dat, 'BLLAC',
and those in agn.dat, 'AGN'.
Class
The HEASARC Browse classification type. The classification
value is based on the value of the Object_Type parameter.