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Table 5

Number of visually inspected DR9 BOSS quasar targets (third column) and identifications in the DR9Q catalog for each target selection method (first column; see Table 4 of Ross et al. 2012, and Tables 6 and 7 in the Appendix of Dawson et al. 2012).

Selection Maskbits # Objects # QSO # QSO z > 2.15 # STAR # GALAXY # ? # BAD

BOSS_TARGET1
QSO_CORE 10 3468 13 1084 1975 64 41 11
QSO_BONUS 11 4259 803 437 3319 89 30 18
QSO_KNOWN_MIDZ 12 9927 9775 9121 36 3 56 57
QSO_KNOWN_LOHIZ 13 24 24 0 0 0 0 0
QSO_NN 14 72 365 45 319 34 864 25 541 569 407 529
QSO_UKIDSS 15 48 27 20 19 2 0 0
QSO_KDE_COADD 16 1362 305 202 921 56 50 30
QSO_LIKE 17 90 762 54 313 35 869 32 909 1699 938 903
QSO_FIRST_BOSS 18 3348 2507 1629 433 142 174 92
QSO_KDE 19 92 203 47 564 34 252 42 248 1021 647 723
QSO_CORE_MAIN 40 67 677 41 817 32 355 23 930 799 461 670
QSO_BONUS_MAIN 41 148 085 76 660 53 000 65 320 2931 1467 1705
QSO_CORE_ED 42 22 715 15 019 12 387 7055 198 169 274
QSO_CORE_LIKE 43 23 951 17 635 12 522 5591 319 188 218
QSO_KNOWN_SUPPZ 44 24 24 0 0 0 0 0

ANCILLARY_TARGET1
QSO_AAL 22 174 172 1 0 1 0 1
QSO_AALS 23 281 277 2 0 0 1 3
QSO_IAL 24 80 80 0 0 0 0 0
QSO_RADIO 25 72 71 0 0 0 1 0
QSO_RADIO_AAL 26 58 58 0 0 0 0 0
QSO_RADIO_IAL 27 31 30 0 0 0 0 1
QSO_NOAALS 28 32 31 0 0 0 1 0
QSO_GRI 29 1117 354 343 373 177 26 187
QSO_HIZ 30 335 0 0 272 4 3 56
QSO_RIZ 31 728 47 42 545 78 11 47

ANCILLARY_TARGET2
HIZQSO82 0 62 2 2 55 1 0 4
HIZQSOIR 1 28 0 0 25 0 0 3
KQSO_BOSS 2 183 81 39 89 4 9 0
QSO_VAR 3 1380 856 296 431 85 5 3
QSO_VAR_FPG 4 576 549 263 6 3 14 4
RADIO_2LOBE_QSO 5 332 149 15 131 29 7 16
QSO_SUPPZ 7 208 208 0 0 0 0 0
QSO_VAR_SDSS 8 1887 568 166 1185 39 35 60

Notes. These categories overlap because many objects are selected by multiple algorithms.

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