2018A&A...611A..76D

Query : 2018A&A...611A..76D

2018A&A...611A..76D - Astronomy and Astrophysics, volume 611A, 76-76 (2018/3-1)

The cosmic evolution of dust-corrected metallicity in the neutral gas.

DE CIA A., LEDOUX C., PETITJEAN P. and SAVAGLIO S.

Abstract (from CDS):

Interpreting abundances of damped Ly-α absorbers (DLAs) from absorption-line spectroscopy has typically been a challenge because of the presence of dust. Nevertheless, because DLAs trace distant gas-rich galaxies regardless of their luminosity, they provide an attractive way of measuring the evolution of the metallicity of the neutral gas with cosmic time. This has been done extensively so far, but typically not taking proper dust corrections into account. The aims of this paper are to: (i) provide a simplified way of calculating dust corrections, based on a single observed [X/Fe], (ii) assess the importance of dust corrections for DLA metallicities and their evolution, and (iii) investigate the cosmic evolution of iron for a large DLA sample. We have derived dust corrections based on the observed [Zn/Fe], [Si/Fe], or [S/Fe], and confirmed their robustness. We present dust-corrected metallicities in a scale of [Fe/H]_tot for 236 DLAs over a broad range of z, and assess the extent of dust corrections for different metals at different metallicities. Dust corrections in DLAs are important even for Zn (typically of 0.1-0.2, and up to 0.5dex), which is often neglected. Finally, we study the evolution of the dust-corrected metallicity with z. The DLA metallicities decrease with redshift, by a factor of 50-100 from today to ∼12.6 billion years ago (z=5). When including dust corrections, the average DLA metallicities are 0.4-0.5dex higher than without corrections. The upper envelope of the relation between metallicity and z reaches solar metallicity at z≤0.5, although some systems can have solar metallicity already out to z∼3.

Abstract Copyright: © ESO 2018

Journal keyword(s): quasars: absorption lines - galaxies: abundances - dust, extinction

VizieR on-line data: <Available at CDS (J/A+A/611/A76): tablec1.dat tablec2.dat>

Simbad objects: 211

Full paper

View the references in ADS

Number of rows : 211

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2024	#notes
1	SDSS J000015.17+004833.2	QSO	00 00 15.1760866776	+00 48 33.306387012						~	26	0
2	LBQS 2359-0216B	QSO	00 01 49.9509602856	-01 59 39.455306448		18	18.0			~	107	0
3	QNQ J00025-2558	QSO	00 02 34.8491813328	-25 58 43.678453116		20.26				~	6	0
4	QSO J0008-0958	QSO	00 08 15.3304880496	-09 58 54.444822024		19.21	18.75			~	42	0
5	LBQS 0010-0012	QSO	00 13 06.1519752552	+00 04 31.948605732		19.29	19.05			~	101	0
6	LBQS 0013-0029	QSO	00 16 02.4050159808	-00 12 25.077257064		18.67	18.36			~	194	0
7	QSO B0027-1836	QSO	00 30 23.6259434280	-18 19 56.117225244		18.2	17.9			~	52	0
8	QSO J0035-0918	QSO	00 35 01.8852012984	-09 18 17.640206928		19.32	19.12			~	56	0
9	QSO B0039-3354	QSO	00 42 16.4579582040	-33 37 54.839369172		18.34	17.74			~	15	0
10	LBQS 0049-2820	QSO	00 51 27.1928384280	-28 04 33.966262488			18.1			~	45	0
11	NAME SMC	G	00 52 38.0	-72 48 01		2.79	2.2			~	10928	1
12	QSO J0058+0115	QSO	00 58 14.3242475568	+01 15 30.229475976		18.39	18.09			~	49	0
13	QSO B0058-292	QSO	01 01 04.6496114136	-28 58 01.682742576			18.7			~	44	0
14	PHL 957	QSO	01 03 11.2741573824	+13 16 17.809871484		16.97	16.57			~	344	0
15	QSO J0105-1846	QSO	01 05 16.7912097864	-18 46 41.986634736			18.3			~	78	0
16	4C -01.06	QSO	01 08 26.8423531848	-00 37 24.164003640		18.11	17.82			~	129	1
17	QSO B0112+03	QSO	01 14 53.2286036664	+03 14 56.953353696			18.6			~	60	2
18	QSO B0112-30	QSO	01 15 04.8742901280	-30 25 14.952952308						~	49	1
19	QSO J0137-2707	QSO	01 37 54.5560896408	-27 07 36.616431864		18.6				~	23	0
20	QSO J0142+0023	QSO	01 42 14.7480666240	+00 23 24.293809176		19.30	18.70			~	53	0
21	QSO B0142-100A	LeQ	01 45 17.3	-09 45 12			16.9			~	39	1
22	6C 014940+333547	QSO	01 52 34.5766588080	+33 50 33.159720264		18.5	18.5			~	126	1
23	PHL 1222	QSO	01 53 53.8926173376	+05 02 57.118052184		18.04	17.63			~	109	0
24	QSO B0201+113	QSO	02 03 46.65705710	+11 34 45.4094619		19.5	19.5	19.41		~	202	1
25	7C 020156.39+363507.00	QSO	02 04 55.5959081688	+36 49 17.992097868			18.1			~	122	1
26	QSO J0211+1241	QSO	02 11 29.1657227904	+12 41 10.824313344		19.27	18.90			~	34	0
27	[VV96] J021741.8-370100	QSO	02 17 41.7604963224	-37 00 59.359132908		18.4	18.4			~	12	0
28	QSO B0216+0803	QSO	02 18 57.3582544488	+08 17 27.346030260			18.1			~	93	0
29	QSO J0225+0054	QSO	02 25 54.8563961016	+00 54 51.953062608		19.18	18.92			~	38	0
30	[VV2006] J023333.2+010333	QSO	02 33 33.2377202424	+01 03 32.977511712		18.87	18.61			~	34	0
31	QSO J0234-0751	QSO	02 34 08.9719223136	-07 51 07.588559304		19.34	19.14			~	39	0
32	HE 0242-2917	QSO	02 42 00.0	-29 17 00						~	6	0
33	QSO B0252-0005	QSO	02 55 13.0345513296	+00 06 39.427249716		19.59	19.49			~	55	0
34	QSO B0253+0058	QSO	02 56 07.2504632664	+01 10 38.606304864		19.58	19.11			~	67	0
35	QSO B0254-404	QSO	02 56 34.0345534368	-40 13 00.403326228			17.4			~	34	0
36	NAME Magellanic Clouds	GrG	03 00	-71.0						~	6897	1
37	QSO B0300-3152	QSO	03 02 11.3270286552	-31 40 30.385641576		17.7				~	16	0
38	QSO J0304-2211	QSO	03 04 49.8652311288	-22 11 51.882127548		16.43	16.40			~	110	0
39	QSO J0307-4945	QSO	03 07 22.8949808808	-49 45 48.274545240			18.76			~	62	0
40	QSO B0335-122	QSO	03 37 55.4513467728	-12 04 04.551994488		21.018	20.110	20.199		~	72	1
41	QSO B0336-017	QSO	03 39 00.98616588	-01 33 17.6076051		20.1	19.1	18.8		~	117	2
42	QSO B0347-383	QSO	03 49 43.6603590912	-38 10 30.825444900			17.3			~	191	0
43	QSO J0407-4410	QSO	04 07 18.0880236912	-44 10 13.983623724		17.6	17.6			~	99	0
44	QSO B0421-2624	QSO	04 23 53.9629367304	-26 18 01.098294768			18.1			~	17	0
45	QSO B0425-5214	QSO	04 26 44.5187583816	-52 08 19.796703972		17.8	17.8			~	15	0
46	QSO B0432-440	QSO	04 34 03.2139497184	-43 55 47.757093672		19.8	19.60	19.7		~	39	0
47	QSO B0449-1645	QSO	04 52 14.2529886192	-16 40 16.386415284		18.0	17.0	17.8		~	45	1
48	QSO J0453-1305	QSO	04 53 13.5744238944	-13 05 55.085318988		13.2	16.5			~	92	2
49	QSO B0454+0356	QSO	04 56 47.1747907776	+04 00 52.946102484		16.76	16.53	16.26		~	240	1
50	4C -02.19	QSO	05 01 12.80988538	-01 59 14.2564557		19.1	18.06	19.04		~	578	1
51	HE 0515-4414	QSO	05 17 07.6238702856	-44 10 55.579731312	14.74	15.49	15.16			~	116	0
52	QSO B0528-2505	QSO	05 30 07.9627395840	-25 03 29.900044512		18.17	17.34	17.7		~	418	0
53	QSO B0551-36	QSO	05 52 46.1824785360	-36 37 27.608212524		17.72	17.57			~	96	0
54	QSO B0642-5038	QSO	06 43 27.0080170248	-50 41 12.811001244			18.5			~	46	0
55	QSO J0745+4734	QSO	07 45 21.7878198936	+47 34 36.191801820		16.76	16.44			~	101	0
56	[VV2006] J075951.8+312941	QSO	07 59 51.8390466744	+31 29 41.163510156		19.44	19.21			~	35	0
57	QSO B0805+5224	QSO	08 08 49.4238903240	+52 15 15.242663556		21.79	20.40			~	58	0
58	QSO J0812+32	QSO	08 12 40.6859242632	+32 08 08.579336496		18.16	17.75			~	101	0
59	QSO J0817+1351	QSO	08 17 40.5276736104	+13 51 34.564098852						~	32	0
60	SDSS J082454.02+130217.0	QSO	08 24 54.0138876120	+13 02 17.022393060		25.68	23.20			~	29	0
61	QSO J0825+5127	QSO	08 25 35.1937162776	+51 27 06.374726748		19.77	18.92			~	48	0
62	[VV2006] J083122.6+404623	QSO	08 31 22.5760969488	+40 46 23.417454036		24.03	21.99			~	37	0
63	QSO J0834+2140	QSO	08 34 29.4445334088	+21 40 24.676327776		23.27	21.83			~	34	0
64	QSO B0836+1122	QSO	08 39 32.9958412872	+11 12 06.594966828			18.8			~	91	0
65	QSO B0841+129	BLL	08 44 24.2445546984	+12 45 46.526286780		18.28	18.5			~	119	0
66	[VV2006] J084438.7+462424	QSO	08 44 38.6296745928	+46 24 25.273626120		21.41	20.43			~	31	0
67	QSO B0900+42	QSO	09 00 33.5091652824	+42 15 47.031009948		17.63	17.18			~	80	0
68	[VV2006] J090940.7+330347	QSO	09 09 40.6676257560	+33 03 47.652068484		20.29	19.46			~	35	0
69	QSO B0913+0715	QSO	09 16 13.9618240848	+07 02 24.497778588			17.1			~	106	0
70	QSO J0918+1636	QSO	09 18 26.1655113600	+16 36 09.045201564		21.19	20.58			~	49	0
71	9C J0933+2845	QSO	09 33 37.2819249600	+28 45 32.315668668		19.63	17.94	17.50		~	76	0
72	QSO B0933-333	BLL	09 35 09.2297465736	-33 32 37.715739216		19.7	20.00	18.9		~	37	1
73	QSO B0933+733	QSO	09 37 48.8931145824	+73 01 58.080158076			17.3			~	56	0
74	QSO J0938+4128	QSO	09 38 57.0175740480	+41 28 21.216772452		16.94	16.75			~	138	1
75	QSO B0945+4337	QSO	09 48 35.9613489240	+43 23 02.600924892		18.54	18.37			~	56	0
76	NVSS J095135+430648	Rad	09 51 35.7	+43 06 48						~	5	1
77	QSO B0951-0450	QSO	09 53 55.7485789920	-05 04 18.968856168			19.0			~	59	0
78	QSO B0953+47	QSO	09 56 25.1645972520	+47 34 42.468198132			19.47			~	65	1
79	QSO B0957+33	QSO	09 57 44.4641685312	+33 08 20.768397468		20.70	19.42			~	66	0
80	QSO J0958+0145	QSO	09 58 22.1850338160	+01 45 24.169177440	18.39	18.13	17.91		18.126	~	78	0
81	[VV2006] J100321.1+552059	QSO	10 03 21.1131417984	+55 20 59.466828948		20.03	19.69			~	34	0
82	QSO J1004+0018	QSO	10 04 28.4334619224	+00 18 25.643447244		18.83	18.61			~	48	0
83	QSO J1009+0713	QSO	10 09 02.0682581400	+07 13 43.900917312		17.41	17.27			~	66	0
84	2QZ J101018.2+000350	QSO	10 10 18.1897291872	+00 03 51.281497008		18.80	18.54			~	48	0
85	QSO B1013+0035	QSO	10 15 49.0046761680	+00 20 20.010036984		22.25	20.79			~	69	0
86	6C 101357+613120	QSO	10 17 25.88756462	+61 16 27.4965040		18.74	18.44	17.87		~	92	1
87	QSO J1021+3001	QSO	10 21 56.5562383920	+30 01 40.456636248			17.48			~	54	0
88	[VV2006] J102410.4+060014	QSO	10 24 10.4440178520	+06 00 13.685186196		19.03	18.83			~	38	0
89	QSO J1037+0139	QSO	10 37 24.4046481840	+01 39 33.974678340		19.88	19.51			~	30	0
90	QSO B1036-2257	QSO	10 39 09.5068714968	-23 13 26.396602392		18.0	18.0			~	45	0
91	QSO B1039+067	QSO	10 42 13.5272919168	+06 28 53.102487396		19.23	19.01			~	33	0
92	SDSS J104242.40+310713.2	QSO	10 42 42.4106725080	+31 07 13.140059556		23.55	21.89			~	27	0
93	2QZ J104252.2+011736	QSO	10 42 52.3250362896	+01 17 36.591913032		18.93	18.69			~	40	0
94	[VV2006] J104349.4+615107	QSO	10 43 49.3553256648	+61 51 08.253694152		20.31	20.03			~	26	0
95	[VV2006] J104826.1+391110	QSO	10 48 26.0307224160	+39 11 10.534696980		19.41	19.19			~	34	0
96	QSO J1049-0110	QSO	10 49 15.4370453448	-01 10 38.189586468		18.34	18.13			~	40	0
97	QSO J1051+3107	QSO	10 51 22.4674763160	+31 07 49.420074540						~	29	0
98	QSO J1051+3545	QSO	10 51 23.0335815072	+35 45 34.298215236		25.68	22.77			~	46	0
99	QSO J1056+1208	QSO	10 56 48.6883114584	+12 08 26.830114620		18.73	18.40			~	33	0
100	QSO J1057+4555	QSO	10 57 56.2610108784	+45 55 53.070401748		20.19	18.80	17.2	16.8	~	114	0
101	QSO J1101+0531	QSO	11 01 34.3595432208	+05 31 33.915664740		25.48	22.93			~	41	0
102	QSO B1104-181	QSO	11 06 33.3845199936	-18 21 23.829049296		15.8	15.9	15.7		~	323	1
103	QSO J1107+0048	QSO	11 07 29.0354645832	+00 48 11.289550860		17.89	17.54			~	58	0
104	QSO B1108-07	QSO	11 11 13.600	-08 04 02.00			18.10			~	77	0
105	SDSS J111126.65+350921.4	QSO	11 11 26.6482363632	+35 09 21.484104480		22.18	21.06			~	29	0
106	QSO J1113-1533	QSO	11 13 50.6122921416	-15 33 34.005990672		18.7	18.7			~	38	0
107	QSO B1113+4134A	QSO	11 16 11.7332268768	+41 18 21.543299640		19.05	18.65			~	46	1
108	QSO B1117-1329	QSO	11 20 10.3163354592	-13 46 25.946998500			18.00			~	55	0
109	QSO B1122-168	QSO	11 24 42.8658917592	-17 05 17.389038732		16.5	16.5	16.1		~	128	1
110	QSO J1131+6044	QSO	11 31 30.4190850480	+60 44 20.760045180		18.45	18.08			~	43	0
111	QSO B1132+2243	QSO	11 35 08.0964488976	+22 27 15.600908232		17.7				~	51	0
112	SDSS J113520.39-001053.5	QSO	11 35 20.3944527984	-00 10 53.572769436		19.36				~	49	0
113	QSO J1137+3907	QSO	11 37 09.5044356960	+39 07 23.411978616		18.34	17.99			~	42	0
114	SDSS J114244.90+070103.1	QSO	11 42 44.9098780968	+07 01 03.118247364		19.28	19.04			~	27	0
115	QSO J1155+0530	QSO	11 55 38.6022229320	+05 30 50.687047944		19.57	18.78			~	57	0
116	QSO B1157+014	QSO	11 59 44.8278142392	+01 12 06.985999764		17.87	17.52			~	222	1
117	QSO J1200+4015	QSO	12 00 39.8150742264	+40 15 56.156311692		19.48	18.93			~	39	0
118	QSO J1201+2117	QSO	12 01 10.3124544696	+21 17 58.588803744		23.93	22.04			~	35	0
119	QSO B1202-074	QSO	12 05 23.1360370080	-07 42 32.759842896			17.5			~	374	5
120	QSO J1208+0010	QSO	12 08 23.82	+00 10 27.8			20.79			~	36	0
121	QSO B1209+0919	QSO	12 11 34.9526605296	+09 02 20.852132964		19.61	19.15			~	104	0
122	SDSS J121143.42+083349.7	QSO	12 11 43.4240637120	+08 33 49.673450196						~	22	0
123	QSO J1217+3305	Bla	12 17 32.5421411376	+33 05 38.030803980			17.5	17.7		~	119	1
124	SDSS J121928.92+160357.1	QSO	12 19 28.9236543912	+16 03 57.065463180		20.23	19.90			~	27	0
125	[VV2006] J122146.4+444527	QSO	12 21 46.4246108520	+44 45 28.025595324		25.04	23.26			~	36	0
126	LBQS 1223+1753	QSO	12 26 07.1946195816	+17 36 49.921603812		18.93	18.59			~	113	0
127	LBQS 1232+0815	QSO	12 34 37.5514444464	+07 58 43.367750796			18.4			~	125	0
128	SDSS J123714.60+064759.5	QSO	12 37 14.6105371632	+06 47 59.612187624		19.66	19.15			~	60	0
129	2MASS J12384093+3437035	QSO	12 38 40.9355211312	+34 37 03.405802296		19.05	18.84			~	34	0
130	QSO J1240+1455	QSO	12 40 20.9116339536	+14 55 35.634530316		20.15	19.57			~	46	0
131	[VV98] J124138.3+461717	QSO	12 41 38.3445927000	+46 17 17.086681140		19.13	18.95			~	34	0
132	QSO J1248+3110	QSO	12 48 20.2099865544	+31 10 43.304516364		22.27	21.06			~	41	0
133	LBQS 1246-0217	QSO	12 49 24.8605898856	-02 33 39.728151576		18.26	18.02			~	66	0
134	[VV2006] J125125.3+412000	QSO	12 51 25.3626555072	+41 20 00.475936584		19.78	19.43			~	39	0
135	QSO J1253-0228	QSO	12 53 36.3528737088	-02 28 07.744660284			18.80			~	40	0
136	QSO J1257-0111	QSO	12 57 59.2191767280	-01 11 30.304749804		20.90	19.82			~	43	0
137	QSO J1304+1202	QSO	13 04 26.1527243616	+12 02 45.594735432		18.76	18.46			~	44	0
138	SDSS J130542.77+092427.7	QSO	13 05 42.7682340888	+09 24 27.752758668		19.73	19.24			~	22	0
139	QSO J1310+5424	QSO	13 10 40.2430628232	+54 24 49.490455752		19.16	18.79			~	39	0
140	3C 286	Sy1	13 31 08.2883506368	+30 30 32.960091564		17.51	17.25			~	4271	2
141	QSO B1331+170	Bla	13 33 35.7827544072	+16 49 04.013500728		16.84	16.71	16.41		~	448	0
142	QSO B1337+11	QSO	13 40 02.5419344664	+11 06 30.181521168			18.7			~	117	0
143	QSO J1356-1101	QSO	13 56 46.8321231864	-11 01 29.227444572		19.0	19.20	17.7		~	52	1
144	QSO B1354-174	QSO	13 57 06.07420758	-17 44 01.9049954		19	19	18		~	91	1
145	7C 1354+2552	QSO	13 57 06.5354509152	+25 37 24.494694024		19.13	18.93			~	98	1
146	[VV2006] J135804.0+034935	QSO	13 58 03.9748494816	+03 49 36.010834932		19.24	18.91			~	38	0
147	QSO B1409+0930	QSO	14 12 17.2929417480	+09 16 24.707943048			18.6			~	63	0
148	QSO J1417+4132	QSO	14 17 19.2304173912	+41 32 37.019203404		19.14	18.85			~	41	0
149	QSO J1419+0829	QSO	14 19 50.5527303624	+08 29 48.295169592		19.39	19.07			~	49	0
150	QSO B1418-064	QSO	14 21 07.75560722	-06 43 56.3557864		20.4	18.50	19.1		~	71	0
151	QSO B1425+606	QSO	14 26 56.1849081360	+60 25 50.813373324		16.82	16.54			~	142	0
152	ICRF J143120.5+395241	Sy1	14 31 20.5383652728	+39 52 41.529989568		16.97	16.65	16.07		~	76	1
153	[VV2006] J143512.9+042037	QSO	14 35 12.9542421792	+04 20 37.010528232		19.49	19.27			~	31	0
154	QSO J1438+4314	QSO	14 38 35.9520037080	+43 14 59.236782756		22.03	20.39			~	45	0
155	SDSS J144051.89+063709.6	QSO	14 40 51.8960025336	+06 37 09.724587672		20.54	19.98			~	32	0
156	QSO J1443+2724	QSO	14 43 31.1697928632	+27 24 36.768781008			19.3			~	91	0
157	QSO B1451+123	QSO	14 54 18.5811696336	+12 10 53.897535696			18.6			~	86	0
158	SDSS J145435.18+094100.0	QSO	14 54 35.1847433736	+09 41 00.035703744		19.25	18.99			~	25	0
159	[VV2006] J145624.7+040741	QSO	14 56 24.6685204872	+04 07 41.055191544		19.66	19.40			~	35	0
160	QSO J1502+4837	QSO	15 02 26.8997425752	+48 37 11.336800512		19.58	19.28	18.24		~	46	1
161	QSO J1506+5220	QSO	15 06 54.5506795824	+52 20 04.744002588		21.72	20.14			~	56	0
162	[VV2006] J150726.3+440649	QSO	15 07 26.3201969040	+44 06 49.241849328		18.73	18.35			~	34	0
163	SDSS J150932.11+111313.6	QSO	15 09 32.1218284080	+11 13 13.610189352		19.72	19.39			~	25	0
164	QSO J1541+3153	QSO	15 41 53.4694925040	+31 53 29.397182856		18.21	17.93			~	43	0
165	[VV2006] J155556.9+480015	QSO	15 55 56.8935414288	+48 00 15.110524404		20.31	19.67			~	37	0
166	SDSS J155738.39+232057.5	QSO	15 57 38.3999032344	+23 20 57.565778280		21.71	20.56			~	29	0
167	QSO J1558-0031	QSO	15 58 10.1642192448	-00 31 20.035621812		18.07	17.80			~	58	0
168	QSO J1558+4053	QSO	15 58 14.5121953872	+40 53 37.014549288		19.09	18.92			~	43	0
169	QSO J1604+3951	QSO	16 04 13.9798326192	+39 51 21.887640756		19.34	18.67			~	47	0
170	QSO J1607+1604	QSO	16 07 34.2221892672	+16 04 17.439735180		24.78	22.53			~	25	0
171	QSO J1610+4724	QSO	16 10 09.4242526872	+47 24 44.480114820		19.72	19.22			~	45	0
172	QSO J1616+4154	QSO	16 16 49.4247047256	+41 54 16.356182328		17.41	17.29			~	53	0
173	QSO J1619+3342	QSO	16 19 16.5426908544	+33 42 38.375748828		17.30	17.26			~	60	0
174	QSO J1623+0718	QSO	16 23 46.2295069416	+07 18 54.888794784		18.14	17.88			~	33	0
175	SDSS J163747.58+290135.2	QSO	16 37 47.5821593376	+29 01 35.291659656		21.71	20.87			~	26	0
176	[VV2006] J170931.0+341730	QSO	17 09 31.0236049536	+34 17 31.240316220		20.13	19.68			~	33	0
177	QSO J1712+5755	QSO	17 12 27.7465195944	+57 55 06.895257456		17.75	17.53			~	43	0
178	QSO J1727+5302	QSO	17 27 39.0275674728	+53 02 29.280756336		18.72	18.42			~	53	0
179	7C 1755+5749	QSO	17 56 03.6270838728	+57 48 47.989106532			18.00	18.4		~	55	1
180	QSO B1759+7539	BLL	17 57 46.3590423768	+75 39 16.181909928			16.50			~	86	0
181	QSO J1802+5616	QSO	18 02 48.8363975640	+56 16 50.442963780			18.30			~	25	0
182	QSO J2036-0553	QSO	20 36 42.2919965400	-05 53 00.276303984		19.01	18.80			~	42	0
183	QSO J2059-0528	QSO	20 59 22.4274372096	-05 28 42.778157700		19.51	19.27			~	38	0
184	QSO J2100-0641	QSO	21 00 25.0301694552	-06 41 45.968177220		19.02	18.54			~	56	0
185	QSO B2059-360	QSO	21 02 44.6068720464	-35 53 07.081042308		19.18	18.62			~	57	0
186	LBQS 2138-4427	QSO	21 41 59.5007724552	-44 13 25.930211268		19.17	18.20			~	67	1
187	QSO J2155+1358	QSO	21 55 02.0017063296	+13 58 25.712205816			18.00			~	48	0
188	QSO B2206-1959	QSO	22 09 00.6950774976	-19 44 19.743416484			18.65			~	83	0
189	QSO J2222-0946	QSO	22 22 56.1132566016	-09 46 36.283906272		18.71	18.34			~	77	0
190	QSO B2223+20	QSO	22 25 36.9183374016	+20 40 15.316288356			18.60			~	27	1
191	QSO B2222-396	QSO	22 25 40.4396409888	-39 24 36.652870116			17.9			~	31	0
192	QSO B2228-399	QSO	22 31 35.3063849208	-39 38 54.315382236			18.3			~	22	0
193	LBQS 2230+0232	QSO	22 32 35.2154152488	+02 47 55.814764596		18.387	18.038			~	96	0
194	LBQS 2230-0015	QSO	22 34 08.9971751592	+00 00 01.703853180		18.09	17.39	17.3		~	137	0
195	QSO B2237-0607	QSO	22 39 53.6812264896	-05 52 19.996061772			18.3			~	116	0
196	QSO J2246-6015	QSO	22 47 08.9258659440	-60 15 45.299400480						~	70	0
197	QSO B2311-373	QSO	23 13 59.7082094616	-37 04 46.215225516		19.0	18.5	19.05		~	44	1
198	QSO B2314-409	QSO	23 16 46.91990359	-40 41 21.0863175		17.9	17.9			~	71	1
199	QSO J2321+1421	QSO	23 21 15.4857724632	+14 21 31.494934296		18.95	18.56			~	36	0
200	QSO B2318-1107	QSO	23 21 28.6902031608	-10 51 22.515901344						~	19	0
201	QSO J2323+2758	QSO	23 23 40.9006391448	+27 58 01.198261056			18.51			~	18	0
202	QSO J2328+0022	QSO	23 28 20.3832928800	+00 22 38.176896792		18.39	18.06			~	67	0
203	QSO B2332-094	QSO	23 34 46.4045250120	-09 08 12.250650732		19.21	18.62	18.07		~	85	0
204	QSO J2340-0053	QSO	23 40 23.6700032496	-00 53 27.001299696		18.26	17.93			~	103	0
205	QSO J2344+0342	QSO	23 44 03.1101598920	+03 42 26.725817304			18.20			~	46	0
206	QSO B2342+3417	QSO	23 44 51.2526572424	+34 33 48.696770052			19.1			~	64	1
207	QSO B2343+125	QSO	23 46 28.200	+12 49 00.00			17.5			~	136	2
208	QSO B2344+125	QSO	23 46 32.80	+12 45 40.0			17.0			~	85	1
209	QSO B2348-0108	QSO	23 50 57.8771296800	-00 52 09.886281492		19.23	18.77	18.7		~	149	0
210	QSO B2348-147	BLL	23 51 29.8153792680	-14 27 56.840819544			16.9			~	80	1
211	QSO J2358-1020	QSO	23 58 10.88239662	-10 20 08.6114174		19.16	18.91	18.00		~	146	0

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