2021MNRAS.504.3187M

Query : 2021MNRAS.504.3187M

2021MNRAS.504.3187M - Mon. Not. R. Astron. Soc., 504, 3187-3202 (2021/July-1)

Appearance versus disappearance of broad absorption line troughs in quasars.

MISHRA S., VIVEK M., CHAND H. and JOSHI R.

Abstract (from CDS):

We present a new set of 84 broad absorption line (BAL) quasars (1.7 < zem < 4.4) exhibiting an appearance of C IV BAL troughs over 0.3-4.8 rest-frame years by comparing the Sloan Digital Sky Survey Data Release (SDSSDR)-7, SDSSDR-12, and SDSSDR-14 quasar catalogues. We contrast the nature of BAL variability in this appearing BAL quasar sample with a disappearing BAL quasar sample studied in the literature by comparing the quasar's intrinsic, BAL trough, and continuum parameters between the two samples. We find that appearing BAL quasars have relatively higher redshift and smaller probed time-scales as compared to the disappearing BAL quasars. To mitigate the effect of any redshift bias, we created control samples of appearing and disappearing BAL quasars that have similar redshift distribution. We find that the appearing BAL quasars are relatively brighter and have shallower and wider BAL troughs compared to the disappearing BAL sample. The distribution of quasar continuum variability parameters between the two samples is clearly separated, with the appearance of the BAL troughs being accompanied by the dimming of the continuum and vice versa. Spectral index variations in the two samples also point to the anticorrelation between the BAL trough and continuum variations consistent with the 'bluer when brighter' trend in quasars. We show that the intrinsic dust model is less likely to be a favourable scenario in explaining BAL appearance/disappearance. Our analysis suggests that the extreme variations of BAL troughs like BAL appearance/disappearance are mainly driven by changes in the ionization conditions of the absorbing gas.

Abstract Copyright: © 2021 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): quasars: absorption lines - quasars: general

Simbad objects: 198

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Number of rows : 198
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 QSO B0000-001 QSO 00 03 30.1869847752 +00 08 13.240938516   19.15 18.91     ~ 29 0
2 [VV2006] J001641.1+010045 QSO 00 16 41.1738815400 +01 00 45.281557656   20.02 19.81     ~ 34 0
3 [VV2006] J002028.3-002914 QSO 00 20 28.3459151016 -00 29 14.979234732   19.52 19.31     ~ 33 0
4 SDSS J002845.77+010648.3 QSO 00 28 45.7704937680 +01 06 48.333674880   20.07 19.81     ~ 19 0
5 LBQS 0049-0012 QSO 00 51 57.2507350584 +00 03 54.786525372   18.45 18.20     ~ 56 0
6 SDSS J013812.06-003002.4 QSO 01 38 12.0662889744 -00 30 02.453200128   19.97 19.71     ~ 24 0
7 [VV2006] J014030.0-082039 QSO 01 40 29.9612018256 -08 20 39.517796472   19.69 19.47     ~ 26 0
8 [VV2006] J015017.8+002902 QSO 01 50 17.7101391528 +00 29 02.477089140   19.74 19.42     ~ 43 0
9 SDSS J015030.68+005953.6 QSO 01 50 30.6888151032 +00 59 53.611096344   20.57 20.37     ~ 22 0
10 [VV2006] J020826.4+003810 QSO 02 08 26.4128201304 +00 38 10.493205612   19.83 19.63     ~ 25 0
11 [VV2006] J021045.0-074715 QSO 02 10 45.0098595120 -07 47 15.599167260   20.21 19.59     ~ 21 0
12 [VV2006] J024006.1-002037 QSO 02 40 06.1172327592 -00 20 37.652176644   18.68 18.47     ~ 37 0
13 SDSS J072134.30+413108.7 QSO 07 21 34.3008947904 +41 31 08.794199784   19.53 19.31     ~ 24 0
14 SDSS J073232.80+435500.4 QSO 07 32 32.7989013696 +43 55 00.383106144   20.03 19.40     ~ 28 0
15 SDSS J073938.18+443123.1 QSO 07 39 38.1811585680 +44 31 23.130928848           ~ 10 0
16 [VV2006] J075010.2+304032 QSO 07 50 10.1728990776 +30 40 32.389526028   19.15 18.91     ~ 34 0
17 SDSS J082313.06+535024.1 QSO 08 23 13.0644174768 +53 50 24.054363924   19.76 19.61     ~ 26 0
18 [VV2006] J082913.7+415448 QSO 08 29 13.7628029760 +41 54 48.458514168   19.82 19.59     ~ 36 0
19 [VV2006] J083017.3+413521 QSO 08 30 17.3209844136 +41 35 21.559085232   19.68 19.44     ~ 31 0
20 [VV2006] J084033.8+052625 QSO 08 40 33.8448627144 +05 26 26.026989612   19.59 19.40     ~ 29 0
21 [VV2006] J084147.9+053038 QSO 08 41 47.8665033768 +05 30 38.819310840   19.33 19.09     ~ 28 0
22 SDSS J084244.39+152901.9 QSO 08 42 44.3916651720 +15 29 01.963964796   19.07 18.87     ~ 18 0
23 SDSS J084410.34+593330.6 QSO 08 44 10.3339944888 +59 33 30.689347392   19.81 19.55     ~ 14 0
24 SDSS J084611.13+115202.6 QSO 08 46 11.1352968072 +11 52 02.708757516   19.22 19.05     ~ 18 0
25 SDSS J085509.77+593204.3 QSO 08 55 09.7750406880 +59 32 04.407902700   19.90 19.59     ~ 15 0
26 SDSS J085512.32+251208.6 QSO 08 55 12.3213359064 +25 12 08.701545672   19.36 19.07     ~ 22 0
27 SDSS J085841.93+124932.1 QSO 08 58 41.9338637760 +12 49 32.170231344   19.44 19.37     ~ 15 0
28 [VV2006] J090744.9+543142 QSO 09 07 44.9629263768 +54 31 42.437460216   19.39 19.17     ~ 25 0
29 [VV2006] J090842.3+081949 QSO 09 08 42.2794252584 +08 19 49.851014124   20.48 20.18     ~ 25 0
30 SDSS J090950.53+245846.1 QSO 09 09 50.5307331072 +24 58 46.092706788   19.13 18.98     ~ 22 0
31 SDSS J091259.00+131910.3 QSO 09 12 59.0053305504 +13 19 10.292184048   19.90 19.62     ~ 16 0
32 SDSS J091354.58+610948.8 QSO 09 13 54.6024511176 +61 09 48.816897192   20.09 19.87     ~ 16 0
33 [VV2006] J091427.2+582752 QSO 09 14 27.1873269552 +58 27 52.268182884   20.00 19.75     ~ 24 0
34 [VV2006] J091621.5+010014 QSO 09 16 21.4662336336 +01 00 15.467142924   19.32 18.99     ~ 35 0
35 [VV2006] J091909.9+463436 QSO 09 19 09.8274964560 +46 34 35.866129728   19.47 19.14     ~ 24 0
36 SDSS J092127.68+221120.1 QSO 09 21 27.6867648456 +22 11 20.071005180   19.71 19.44     ~ 16 0
37 [VV2006] J092317.0+033146 QSO 09 23 16.9364617104 +03 31 46.938580788   19.91 19.50     ~ 23 0
38 QSO B0920+4633 QSO 09 23 37.6945578912 +46 21 00.154361988   19.37 19.18     ~ 26 0
39 SDSS J092743.01+290734.7 QSO 09 27 43.0210889880 +29 07 34.707405288   19.55 19.37     ~ 24 0
40 [VV2006] J092905.4+340434 QSO 09 29 05.4517696872 +34 04 34.429129932   20.90 20.12     ~ 26 0
41 SDSS J093630.22+155418.1 QSO 09 36 30.2276490936 +15 54 18.207648972   19.15 18.93     ~ 18 0
42 SDSS J093714.78+175253.6 QSO 09 37 14.7897175848 +17 52 53.690165976   19.42 19.21     ~ 18 0
43 [VV2006] J093739.9+334053 QSO 09 37 39.8981383512 +33 40 53.441905656   19.63 19.47     ~ 21 0
44 [VV2006] J094927.9+111517 QSO 09 49 27.8838658272 +11 15 18.272023704   20.87 19.90     ~ 27 0
45 [VV2006] J095005.9+362454 QSO 09 50 05.9050269048 +36 24 55.248370236   19.40 19.07     ~ 34 0
46 SDSS J095038.50+300133.2 QSO 09 50 38.5065734904 +30 01 33.346782912   19.38 19.23     ~ 22 0
47 2MASS J09525809+1955531 QSO 09 52 58.1023488336 +19 55 53.121220824   18.64 18.39     ~ 16 0
48 SDSS J095728.86+165527.9 QSO 09 57 28.8643103496 +16 55 28.022824848   19.72 19.40     ~ 16 0
49 SDSS J095733.44+215320.9 QSO 09 57 33.4423801512 +21 53 20.934926952   19.82 19.56     ~ 17 0
50 SDSS J100201.38+232408.6 QSO 10 02 01.3818706512 +23 24 08.678738520   20.52 20.26     ~ 13 0
51 SDSS J100201.50+144446.4 QSO 10 02 01.5040741584 +14 44 46.456136196   19.58 19.40     ~ 13 0
52 SDSS J100342.73+240622.3 QSO 10 03 42.7356999720 +24 06 22.370846472   18.74 18.54     ~ 17 0
53 [VV2006] J100513.6+004028 QSO 10 05 13.6144242816 +00 40 28.325786196   18.00 17.73     ~ 35 0
54 [VV2006] J101408.9+473150 QSO 10 14 08.8311465960 +47 31 50.509006896   19.47 19.28     ~ 27 0
55 [VV2006] J101617.7+405912 QSO 10 16 17.6728913112 +40 59 12.292087740   19.56 19.40     ~ 24 0
56 SDSS J102059.76+292220.1 QSO 10 20 59.7652987944 +29 22 20.149932540   19.62 19.49     ~ 15 0
57 SDSS J102510.55+260253.7 QSO 10 25 10.5624617208 +26 02 53.845959336   19.88 19.53     ~ 17 0
58 SDSS J102708.31+161038.5 QSO 10 27 08.3157219888 +16 10 38.539629408   20.87 20.57     ~ 11 0
59 SDSS J102708.91+300747.5 QSO 10 27 08.9073321456 +30 07 47.485537176   18.6 19.51 18.9   ~ 19 0
60 SDSS J103648.24+292800.0 QSO 10 36 48.2457857760 +29 28 00.020703396   18.89 18.66     ~ 17 0
61 [VV2006] J104218.6+075018 QSO 10 42 18.6156461592 +07 50 18.032912700   19.59 19.31     ~ 26 0
62 SDSS J104325.05+162050.7 QSO 10 43 25.0504100880 +16 20 50.687548008   19.10 18.90     ~ 18 0
63 SDSS J104735.13+174928.2 QSO 10 47 35.1280197384 +17 49 28.200042156   20.02 19.63     ~ 15 0
64 SDSS J104801.18+193624.7 QSO 10 48 01.1772210096 +19 36 24.847088688   19.62 19.36     ~ 15 0
65 SDSS J104836.68+213843.9 QSO 10 48 36.6940977168 +21 38 43.993277412   19.82 19.60     ~ 15 0
66 [VV2006] J105146.1+592213 QSO 10 51 46.0549347024 +59 22 13.964929428   19.36 19.06     ~ 31 0
67 SDSS J105207.90+362219.4 QSO 10 52 07.9073035656 +36 22 19.497748044   19.33 19.11     ~ 30 0
68 [VV2006] J105311.4+123516 QSO 10 53 11.3964583608 +12 35 16.701500580   20.25 19.90     ~ 22 0
69 [VV2006] J105427.9+504835 QSO 10 54 27.9286676808 +50 48 35.683596108   19.97 19.80     ~ 23 0
70 QSO B1056.2+0113 QSO 10 58 47.2030281336 +00 56 56.668722900   19.42 19.31     ~ 32 0
71 SDSS J110049.03+205129.7 QSO 11 00 49.0434239472 +20 51 29.783621808   19.56 19.40     ~ 14 0
72 2MASS J11041911+1436508 QSO 11 04 19.1157362952 +14 36 50.901775632   18.93 18.71     ~ 22 0
73 SDSS J110650.42+585551.4 QSO 11 06 50.4281623392 +58 55 51.515699412           ~ 10 0
74 [VV2006] J111039.7+664253 QSO 11 10 39.6510646728 +66 42 53.425216044   19.20 18.96     ~ 25 0
75 SDSS J111431.20+200024.1 QSO 11 14 31.2128521440 +20 00 24.189536880   19.78 19.47     ~ 16 0
76 [VV2006] J113123.3+460408 QSO 11 31 23.3454275664 +46 04 08.510108808   19.27 18.99     ~ 25 0
77 SDSS J113608.22+184908.1 QSO 11 36 08.2258031568 +18 49 08.213968056   19.51 19.40     ~ 15 0
78 [VV2006] J114307.2+475101 QSO 11 43 07.2193973184 +47 51 01.779163560   19.68 19.44     ~ 23 0
79 SDSS J114359.13+274440.1 QSO 11 43 59.1381187968 +27 44 40.226467524   20.11 19.70     ~ 15 0
80 [VV2006] J114408.8+532412 QSO 11 44 08.8246242600 +53 24 12.447240840   19.03 18.82     ~ 24 0
81 [VV2006] J114552.4+495114 QSO 11 45 52.4298803616 +49 51 14.007668076   21.17 20.56     ~ 22 0
82 [VV2006] J114714.0+442543 QSO 11 47 13.9837165848 +44 25 43.479608124   19.43 19.19     ~ 21 0
83 SDSS J114832.37+074923.4 QSO 11 48 32.3727934344 +07 49 23.523778272   19.54 19.34     ~ 19 0
84 SDSS J115216.58+281629.7 QSO 11 52 16.5799047552 +28 16 29.700822612   19.77 19.57     ~ 17 0
85 SDSS J115513.64+370319.2 QSO 11 55 13.6385065008 +37 03 19.202069592   19.86 19.68     ~ 27 0
86 [VV2006] J120315.7-011123 QSO 12 03 15.7272857976 -01 11 23.707484772   19.86 19.63     ~ 30 0
87 [VV2006] J120634.2+455237 QSO 12 06 34.1411750352 +45 52 38.197526088   19.63 19.38     ~ 23 0
88 [VV2006] J121113.6+044946 QSO 12 11 13.5682903320 +04 49 46.247804292   19.17 19.03     ~ 31 0
89 [VV2006] J121407.4+565108 QSO 12 14 07.4234521848 +56 51 08.749455444   19.25 19.03     ~ 23 0
90 SDSS J121729.60+174332.3 QSO 12 17 29.6005917720 +17 43 32.459927700   19.48 19.20     ~ 17 0
91 SDSS J122213.41+235833.7 QSO 12 22 13.4183024664 +23 58 33.720852036   19.69 19.39     ~ 14 0
92 SDSS J122651.40+312309.1 QSO 12 26 51.3959594952 +31 23 09.058320744   20.76 20.48     ~ 13 0
93 SDSS J123056.65+165438.1 QSO 12 30 56.6531093928 +16 54 38.194396632   19.98 19.74     ~ 16 0
94 [VV2006] J123542.1+440114 QSO 12 35 42.1171574760 +44 01 14.565007020   19.64 19.49     ~ 22 0
95 [VV2006] J123720.9-011316 QSO 12 37 20.8590729888 -01 13 14.987299944   19.50 19.29     ~ 33 0
96 [VV2006] J123930.2+501512 QSO 12 39 30.2441410392 +50 15 12.311783784   19.62 19.41     ~ 25 0
97 [VV2006] J124031.7+103129 QSO 12 40 31.6835141424 +10 31 29.510410188   19.71 19.48     ~ 26 0
98 LBQS 1240+1504 QSO 12 43 12.9405116304 +14 48 12.033970956   18.22 18.00     ~ 38 0
99 SDSS J124329.42+220741.2 QSO 12 43 29.4269108952 +22 07 41.190283452   20.48 20.23     ~ 15 0
100 SDSS J124345.92+185342.9 QSO 12 43 45.9234034272 +18 53 43.020171204   19.70 19.27     ~ 18 0
101 LBQS 1242+1737 QSO 12 45 26.8072022616 +17 20 53.155949064   18.43 18.30     ~ 40 0
102 SDSS J124543.06+183427.2 QSO 12 45 43.0717913064 +18 34 27.223876056   19.27 19.01     ~ 17 0
103 SDSS J124656.95+184926.8 QSO 12 46 56.9550592248 +18 49 26.976698256   20.12 19.07     ~ 16 0
104 [VV2006] J124725.1+493043 QSO 12 47 25.0867858392 +49 30 42.829081956   19.99 19.66     ~ 27 0
105 QSO B1246+344 QSO 12 48 29.4603813840 +34 12 31.175129196   18.93 18.71     ~ 35 0
106 [VV2006] J124940.2-012825 QSO 12 49 40.2324354576 -01 28 25.044009960   20.73 20.32     ~ 24 0
107 A2 96 QSO 12 51 50.6495432856 +26 39 00.077396580   18.11 17.86     ~ 25 0
108 SDSS J125157.23+124842.1 QSO 12 51 57.2417693424 +12 48 42.068447784   19.83 19.58     ~ 26 0
109 SDSS J125634.98+183854.4 QSO 12 56 34.9867391064 +18 38 54.518413812           ~ 12 0
110 [VV2006] J125650.3+041323 QSO 12 56 50.3576319384 +04 13 23.958916500   20.62 20.25     ~ 26 0
111 SDSS J125659.00+193942.7 QSO 12 56 59.0051244744 +19 39 42.738610140   20.81 20.33     ~ 18 0
112 SDSS J125906.79+342529.9 QSO 12 59 06.7956873096 +34 25 29.923204044   19.94 19.77     ~ 22 0
113 SDSS J130148.57+361515.8 QSO 13 01 48.5745657600 +36 15 15.888486996   19.56 19.36     ~ 19 0
114 SDSS J130203.25+601456.4 QSO 13 02 03.2483216808 +60 14 56.418808740           ~ 11 0
115 SDSS J130527.88+262522.7 QSO 13 05 27.8782248336 +26 25 22.715063328   19.54 19.39     ~ 17 0
116 2MASS J13065215+2043153 QSO 13 06 52.1500177536 +20 43 15.487059288   18.60 18.22     ~ 15 0
117 SDSS J130825.74+204707.2 QSO 13 08 25.7485209360 +20 47 07.327271976   19.18 18.95     ~ 15 0
118 QSO J1308+1331 QSO 13 08 41.1872773488 +13 31 30.575147016   19.31 18.98     ~ 25 0
119 SDSS J131346.72+393604.7 QSO 13 13 46.7277000336 +39 36 04.769825184   19.95 19.41     ~ 24 0
120 [VV2006] J132115.6+495546 QSO 13 21 15.6751079832 +49 55 46.373309292   19.15 18.95     ~ 29 0
121 SDSS J132246.83+272633.0 QSO 13 22 46.8244475208 +27 26 33.020061720   20.19 19.76     ~ 17 0
122 [VV2006] J132758.9-023024 QSO 13 27 58.8333048720 -02 30 25.472374092   19.62 19.32     ~ 32 0
123 SDSS J133418.98+240011.5 QSO 13 34 18.9909371808 +24 00 11.491420536   19.31 19.16     ~ 20 0
124 [VV2006] J133541.4+483529 QSO 13 35 41.3901881856 +48 35 30.058269324   20.10 19.82     ~ 23 0
125 SDSS J133727.10+081734.3 QSO 13 37 27.1040578392 +08 17 34.394044992   20.27 19.90     ~ 15 0
126 SDSS J133905.39+240751.0 QSO 13 39 05.3980628112 +24 07 51.127242024   19.88 19.66     ~ 18 0
127 SDSS J133959.98+203757.7 QSO 13 39 59.9834385216 +20 37 57.788483376   20.60 20.14     ~ 14 0
128 [VV2006] J134027.4+660348 QSO 13 40 27.4110989424 +66 03 48.253545612   19.43 19.27     ~ 23 0
129 SDSS J134210.95+301521.4 QSO 13 42 10.9547224536 +30 15 21.448972908   19.84 19.56     ~ 17 0
130 SDSS J134605.45+142920.7 QSO 13 46 05.4597622536 +14 29 20.787514800   19.03 18.88     ~ 17 0
131 [VV2006] J135203.3+024643 QSO 13 52 03.2499800952 +02 46 43.527436104   19.84 19.52     ~ 23 0
132 SDSS J140106.03+312829.6 QSO 14 01 06.0376476432 +31 28 29.678597760   19.16 18.83     ~ 19 0
133 [VV2006] J140217.6+445210 QSO 14 02 17.5650227496 +44 52 11.166569940   19.37 19.15     ~ 24 0
134 2QZ J140224.1+003001 QSO 14 02 24.1606238520 +00 30 02.246281488   19.19 18.91     ~ 41 0
135 SDSS J140246.83+252317.0 QSO 14 02 46.8348921456 +25 23 17.015889768   20.06 19.69     ~ 18 0
136 SDSS J140317.06+191811.1 QSO 14 03 17.0712623136 +19 18 11.101603428   19.49 19.28     ~ 18 0
137 QSO B1400+0935 QSO 14 03 26.5030139000 +09 20 43.901627801     18.5     ~ 32 0
138 [VV2006] J140651.1+650612 QSO 14 06 51.0989452632 +65 06 13.154007312   19.22 18.98     ~ 24 0
139 SDSS J141304.26+164741.1 QSO 14 13 04.2686693544 +16 47 41.107965936   19.10 18.82     ~ 18 0
140 SDSS J141407.13+270610.3 QSO 14 14 07.1341252944 +27 06 10.295656560   19.71 19.41     ~ 18 0
141 SDSS J141723.73+285522.6 QSO 14 17 23.7293616240 +28 55 22.683950508   19.89 19.55     ~ 20 0
142 SDSS J141724.48+202752.8 QSO 14 17 24.4873374240 +20 27 52.928942796   20.51 20.19     ~ 13 0
143 [VV2006] J141957.0+010652 QSO 14 19 56.9648849064 +01 06 52.601735952   19.86 19.45     ~ 33 0
144 SDSS J142033.94+161228.3 QSO 14 20 33.9399542664 +16 12 28.356573888   19.59 19.31     ~ 17 0
145 [VV2006] J142211.8+584249 QSO 14 22 11.7985471248 +58 42 49.418475192   18.50 18.27     ~ 28 0
146 SDSS J142659.96+161003.3 QSO 14 26 59.9568273648 +16 10 03.348527412   19.49 19.15     ~ 17 0
147 SDSS J142906.93+221001.5 QSO 14 29 06.9377646984 +22 10 01.609411080   19.94 19.54     ~ 18 0
148 [VV2006] J143057.1+625112 QSO 14 30 57.1647800280 +62 51 13.126963392   19.45 19.25     ~ 25 0
149 [VV2006] J143248.8+501048 QSO 14 32 48.8097300072 +50 10 48.792039960   19.35 19.13     ~ 25 0
150 SDSS J143255.08+155656.8 QSO 14 32 55.0877542368 +15 56 56.784547644   19.92 19.75     ~ 16 0
151 [VV2006] J143331.0+033523 QSO 14 33 31.0157343648 +03 35 23.655246000   20.56 20.27     ~ 26 0
152 SDSS J143558.56+252707.9 QSO 14 35 58.5697002744 +25 27 07.857208944   19.66 19.41     ~ 20 0
153 SDSS J143810.86+173900.8 QSO 14 38 10.8641432376 +17 39 00.898759044   19.20 19.01     ~ 19 0
154 SDSS J143813.25+193525.8 QSO 14 38 13.2575619648 +19 35 25.840049892   19.63 19.44     ~ 17 0
155 SDSS J144621.83+261707.4 QSO 14 46 21.8326018632 +26 17 07.411932672   19.51 19.25     ~ 16 0
156 SDSS J144631.96+083451.5 QSO 14 46 31.9709410608 +08 34 51.603251700   20.61 20.24     ~ 15 0
157 SDSS J144826.10+122814.7 QSO 14 48 26.0979768648 +12 28 14.681557416   19.39 19.17     ~ 24 0
158 SDSS J145519.92+121645.1 QSO 14 55 19.9242360144 +12 16 45.121096488   19.72 19.50     ~ 23 0
159 SDSS J145526.86+132411.6 QSO 14 55 26.8688099568 +13 24 11.558072808   19.63 19.39     ~ 15 0
160 SDSS J145735.77+054142.9 QSO 14 57 35.7784383096 +05 41 42.850425624   20.00 19.67     ~ 16 0
161 [VV2006] J145952.0+321320 QSO 14 59 52.0548255168 +32 13 20.422056216   19.67 19.40     ~ 26 0
162 [VV2006] J150406.3+614023 QSO 15 04 06.2286283200 +61 40 23.305201176   19.32 19.12     ~ 24 0
163 SDSS J150548.65+242706.1 QSO 15 05 48.6480647328 +24 27 06.061703508   19.82 19.45     ~ 18 0
164 SDSS J150932.11+111313.6 QSO 15 09 32.1218284080 +11 13 13.610189352   19.72 19.39     ~ 26 0
165 [VV2006] J150944.0+561604 QSO 15 09 44.0890653648 +56 16 05.281709124   19.45 19.12     ~ 24 0
166 [VV2006] J151248.6+451213 QSO 15 12 48.6393409680 +45 12 13.247409096   18.85 18.64     ~ 27 0
167 [VV2006] J151333.1+434422 QSO 15 13 33.0726988824 +43 44 22.351908480   19.49 19.27     ~ 25 0
168 [VV2006] J151413.2+405157 QSO 15 14 13.1699294616 +40 51 57.873012156   20.15 19.81     ~ 26 0
169 [VV2006] J151448.8+354154 QSO 15 14 48.8819357304 +35 41 54.307645476   19.94 19.51     ~ 23 0
170 [VV2006] J151752.8+535010 QSO 15 17 52.7875333704 +53 50 10.536584244   19.38 19.06     ~ 27 0
171 SDSS J152625.38+014857.9 QSO 15 26 25.3852021848 +01 48 57.960366444   20.32 19.95     ~ 13 0
172 SDSS J152922.05+570817.3 QSO 15 29 22.0501853832 +57 08 17.348523432   20.09 19.88     ~ 19 0
173 [VV2006] J153336.0+571836 QSO 15 33 36.0277095144 +57 18 35.868088224   19.02 18.89     ~ 23 0
174 [VV2006] J153428.5+480028 QSO 15 34 28.5631135416 +48 00 28.825057116   19.58 19.39     ~ 24 0
175 SDSS J153439.53+054229.4 QSO 15 34 39.5363413176 +05 42 29.480674608   20.63 20.39     ~ 15 0
176 SDSS J154229.49+145045.0 QSO 15 42 29.4926197200 +14 50 45.028849668   20.50 20.20     ~ 15 0
177 SDSS J160008.42+120724.3 QSO 16 00 08.4300238704 +12 07 24.362292936   19.68 19.54     ~ 15 0
178 [VV2006] J160202.1+495904 QSO 16 02 02.1138290808 +49 59 04.351450488   18.97 18.71     ~ 25 0
179 SDSS J160216.74+293038.8 QSO 16 02 16.7439532248 +29 30 38.852490600   19.45 19.19     ~ 28 0
180 [VV2006] J160445.9+335759 QSO 16 04 45.9246706680 +33 57 59.128506612   19.93 19.75     ~ 27 0
181 SDSS J160816.96+235148.4 QSO 16 08 16.9613227728 +23 51 48.434558940   19.83 19.60     ~ 23 0
182 SDSS J161727.05+221121.0 QSO 16 17 27.0544438992 +22 11 21.081587424   20.08 19.84     ~ 20 0
183 SDSS J162625.70+155003.6 QSO 16 26 25.7080270104 +15 50 03.649629624   20.19 20.07     ~ 16 0
184 [VV2006] J163112.0+273140 QSO 16 31 12.0604965384 +27 31 41.100711528   19.69 19.12     ~ 31 0
185 SDSS J163226.51+305506.5 QSO 16 32 26.5174283640 +30 55 06.436072272   19.96 19.77     ~ 21 0
186 [VV2006] J163638.1+211255 Bla 16 36 38.1837507672 +21 12 55.597804020   19.86 19.69 18.70   ~ 67 1
187 [VV2006] J163651.9+313148 QSO 16 36 51.8180541336 +31 31 48.125857080   18.35 18.09     ~ 32 0
188 [VV2006] J163844.8+330339 QSO 16 38 44.7909661440 +33 03 39.558114144   17.92 17.79     ~ 27 0
189 QSO B1640+398 QSO 16 42 28.5228945888 +39 43 43.496675508   19.21 18.85     ~ 39 0
190 [VV2006] J164646.7+355558 QSO 16 46 46.7006943720 +35 55 58.134311544   19.51 19.30     ~ 27 0
191 SDSS J165642.32+401358.0 QSO 16 56 42.3245326872 +40 13 57.998241588           ~ 15 0
192 [VV2006] J170459.0+354611 QSO 17 04 59.0510912856 +35 46 12.108897588   19.73 19.45     ~ 25 0
193 SDSS J220151.45+130719.9 QSO 22 01 51.4605216768 +13 07 19.947270432   19.49 19.15     ~ 26 0
194 SDSS J220813.99+125046.3 QSO 22 08 13.9927547640 +12 50 46.357995336   19.54 19.26     ~ 26 0
195 BWE 2212+1307 QSO 22 15 09.3142843920 +13 22 37.202881440   19.25 19.00     ~ 41 1
196 SDSS J223500.04+144556.6 QSO 22 35 00.0461089512 +14 45 56.688442092   19.31 19.05     ~ 23 0
197 SDSS J224511.28+003557.4 QSO 22 45 11.2941421488 +00 35 57.411158208   19.68 19.40     ~ 30 0
198 SDSS J235351.71+212019.8 QSO 23 53 51.7191969456 +21 20 19.843974600           ~ 6 0

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