2016MNRAS.462.3285P

Query : 2016MNRAS.462.3285P

2016MNRAS.462.3285P - Mon. Not. R. Astron. Soc., 462, 3285-3301 (2016/November-1)

Nature and statistical properties of quasar associated absorption systems in the XQ-100 Legacy Survey.

PERROTTA S., D'ODORICO V., PROCHASKA J.X., CRISTIANI S., CUPANI G., ELLISON S., LOPEZ S., BECKER G.D., BERG T.A.M., CHRISTENSEN L., DENNEY K.D., HAMANN F., PARIS I., VESTERGAARD M. and WORSECK G.

Abstract (from CDS):

We statistically study the physical properties of a sample of narrow absorption line (NAL) systems looking for empirical evidences to distinguish between intrinsic and intervening NALs without taking into account any a priori definition or velocity cut-off. We analyse the spectra of 100 quasars with 3.5 < zem < 4.5, observed with X-shooter/Very Large Telescope in the context of the XQ-100 Legacy Survey. We detect an ∼8σ excess in the C IV number density within 10 000 km s^- 1^ of the quasar emission redshift with respect to the random occurrence of NALs. This excess does not show a dependence on the quasar bolometric luminosity and it is not due to the redshift evolution of NALs. It extends far beyond the standard 5000 km s^- 1^ cut-off traditionally defined for associated absorption lines. We propose to modify this definition, extending the threshold to 10 000 km s^- 1^ when weak absorbers (equivalent width < 0.2 Å) are also considered. We infer N V is the ion that better traces the effects of the quasar ionization field, offering the best statistical tool to identify intrinsic systems. Following this criterion, we estimate that the fraction of quasars in our sample hosting an intrinsic NAL system is 33 per cent. Lastly, we compare the properties of the material along the quasar line of sight, derived from our sample, with results based on close quasar pairs investigating the transverse direction. We find a deficiency of cool gas (traced by C II) along the line of sight connected to the quasar host galaxy, in contrast with what is observed in the transverse direction.

Abstract Copyright: © 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): galaxies: high-redshift - intergalactic medium - quasars: absorption lines - quasars: absorption lines

VizieR on-line data: <Available at CDS (J/MNRAS/462/3285): sources.dat table2.dat>

Simbad objects: 100

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Number of rows : 100
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 J0003-2603 QSO 00 03 22.9531962024 -26 03 18.304471908   18 17.53     ~ 293 0
2 QSO J0006-6208 QSO 00 06 51.6236518800 -62 08 03.569781336     18.29     ~ 41 0
3 QSO J0030-5129 QSO 00 30 34.3702491744 -51 29 46.381811244     18.57     ~ 19 0
4 QSO B0032+1622 QSO 00 34 54.6003906960 +16 39 20.658857256   21.1 19.50 18.7   ~ 28 0
5 QSO J0042-1020 QSO 00 42 19.7442706968 -10 20 09.572952948   20.57 19.53     ~ 36 0
6 QSO B0035-25 QSO 00 48 34.5619804200 -24 42 06.115888476     18.94     ~ 20 1
7 QSO J0056-2808 QSO 00 56 25.0852890048 -28 08 32.246023452     18.24     ~ 55 0
8 QSO B0055-26 QSO 00 57 58.0253990928 -26 43 14.750912928   17.90 17.47 17.99   ~ 152 1
9 QSO J0100-2708 QSO 01 00 12.3140516496 -27 08 53.086023960   18.74 17.80     ~ 22 0
10 QSO B0111-2819 QSO 01 13 44.3844522888 -28 03 17.403981300     18.67     ~ 21 0
11 QSO J0117+1552 QSO 01 17 31.0833164376 +15 52 17.013382248     18.60     ~ 20 0
12 QSO J0121+0347 QSO 01 21 26.1474572280 +03 47 06.753783480     17.90     ~ 43 0
13 QSO J0124+0044 QSO 01 24 03.7793700432 +00 44 32.745561900   19.71 18.71 17.9   ~ 101 0
14 QSO J0132+1341 QSO 01 32 09.8738168184 +13 41 37.599025920     19.30     ~ 20 0
15 QSO J0133+0400 QSO 01 33 40.3265690928 +04 00 59.844453768     18.30     ~ 74 0
16 QSO B0135-42 QSO 01 37 24.3934534824 -42 24 17.145923688     18.46     ~ 30 0
17 QSO B0151-00 QSO 01 53 39.6078379368 -00 11 04.929367704   21.73 20.12     ~ 72 0
18 QSO J0211+1107 QSO 02 11 20.0369218272 +11 07 16.619669508     18.12     ~ 18 0
19 QSO J0214-0517 QSO 02 14 29.2973812872 -05 17 44.864763216     18.42     ~ 31 1
20 QSO J0234-1806 QSO 02 34 55.1545222416 -18 06 08.595991548     18.79     ~ 26 0
21 QSO B0241-01 QSO 02 44 01.8451874040 -01 34 03.848758680     18.20     ~ 65 0
22 QSO B0245-0608 QSO 02 47 56.5751683632 -05 55 58.779041160     18.60     ~ 28 0
23 QSO J0248+1802 QSO 02 48 54.2720204400 +18 02 49.274967876     18.4     ~ 49 0
24 QSO J0255+0048 QSO 02 55 18.5784341184 +00 48 47.540744316   21.15 20.00     ~ 84 0
25 QSO J0307-4945 QSO 03 07 22.8949808808 -49 45 48.274545240     18.76     ~ 69 0
26 QSO J0311-1722 QSO 03 11 15.2117927712 -17 22 47.669854188     17.73     ~ 37 0
27 QSO J0403-1703 QSO 04 03 56.6606313000 -17 03 21.923360028     18.7     ~ 35 0
28 QSO J0415-4357 QSO 04 15 15.1808225472 -43 57 52.947818244     18.81     ~ 22 0
29 QSO B0424-2209 QSO 04 26 10.3253549256 -22 02 17.793957984     17.94     ~ 37 0
30 QSO J0525-3343 Bla 05 25 06.1749810960 -33 43 05.643939828     18.50 18.5   ~ 62 1
31 QSO J0529-3526 QSO 05 29 15.9124930752 -35 26 03.550280604     18.94     ~ 17 0
32 QSO J0529-3552 QSO 05 29 20.8178658408 -35 52 34.247378928     18.29     ~ 23 0
33 QSO J0714-6455 QSO 07 14 31.3909921824 -64 55 10.502736132     18.35     ~ 22 0
34 QSO J0747+2739 QSO 07 47 11.1466907592 +27 39 03.365989812     17.20     ~ 74 0
35 QSO J0755+1345 QSO 07 55 52.4180637576 +13 45 51.230353176   19.98 19.29     ~ 28 0
36 QSO J0800+1920 QSO 08 00 50.2799470488 +19 20 58.957996452   20.89 19.92     ~ 40 0
37 SDSS J081855.78+095848.0 QSO 08 18 55.7827140888 +09 58 47.995294728   19.71 18.81     ~ 41 0
38 QSO J0833+0959 QSO 08 33 22.4989675248 +09 59 41.202402252   20.33 19.59     ~ 47 1
39 QSO J0835+0650 QSO 08 35 10.9218543888 +06 50 52.822332492   20.40 19.43     ~ 38 0
40 QSO J0839+0318 QSO 08 39 41.4494507976 +03 18 17.096263560   21.62 20.10     ~ 39 0
41 QSO J0920+0725 QSO 09 20 41.7620878440 +07 25 44.069595420   20.01 19.28     ~ 39 0
42 QSO J0935+0022 QSO 09 35 56.9191378176 +00 22 55.681297716   20.26 19.37     ~ 45 0
43 QSO J0937+0828 QSO 09 37 14.4853902864 +08 28 58.543420404   20.50 19.61     ~ 43 0
44 QSO B0952-0115 QSO 09 55 00.1037541106 -01 30 06.549307797     18.7     ~ 150 0
45 QSO J0959+1312 QSO 09 59 37.1146924200 +13 12 15.467765616   19.65 18.55     ~ 50 0
46 QSO J1013+0650 QSO 10 13 47.2971641808 +06 50 15.660024468   20.59 19.63     ~ 42 0
47 QSO J1018+0548 QSO 10 18 18.4507691544 +05 48 22.729956876   20.07 19.41     ~ 38 0
48 QSO J1020+0922 QSO 10 20 40.6230869016 +09 22 54.238672668   19.94 19.20     ~ 46 0
49 SDSS J102456.61+181908.7 QSO 10 24 56.6168544000 +18 19 08.700128724   19.62 18.99     ~ 26 0
50 QSO J1032+0927 QSO 10 32 21.1157309496 +09 27 49.002473052   20.72 19.75     ~ 37 0
51 QSO J1034+1102 QSO 10 34 46.5347918856 +11 02 14.587007532   21.08 20.01     ~ 37 0
52 QSO B1033-033 QSO 10 36 23.7457432848 -03 43 18.929156772     18.5     ~ 74 0
53 QSO J1037+2135 QSO 10 37 30.3301614000 +21 35 31.408070712   19.10 18.40     ~ 28 0
54 QSO J1037+0704 QSO 10 37 32.3836726200 +07 04 26.291458380   20.26 19.24     ~ 41 0
55 QSO J1042+1957 QSO 10 42 34.0099089360 +19 57 18.618440040   19.80 19.07     ~ 26 0
56 QSO J1053+0103 QSO 10 53 40.7577833832 +01 03 35.710467408   19.71 19.03     ~ 35 0
57 QSO J1054+0215 QSO 10 54 34.1744480256 +02 15 52.001921628   20.83 19.68     ~ 33 0
58 SDSS J105705.37+191042.8 QSO 10 57 05.3733759528 +19 10 42.850923744   20.93 19.74     ~ 31 0
59 PSS J1058+1245 QSO 10 58 58.3817012496 +12 45 54.925620408     18.00     ~ 24 0
60 QSO J1103+1004 QSO 11 03 52.7442282696 +10 04 03.182969352   20.45 19.58     ~ 39 0
61 SDSS J110855.46+120953.3 QSO 11 08 55.4652728904 +12 09 53.344550916   20.81 19.72     ~ 52 0
62 QSO J1110+0244 QSO 11 10 08.6149313520 +02 44 58.123439448   20.05 19.05     ~ 41 0
63 QSO B1108-07 QSO 11 11 13.600 -08 04 02.00     18.10     ~ 85 0
64 QSO J1117+1311 QSO 11 17 01.8984156408 +13 11 15.581756256   19.50 18.77     ~ 42 0
65 QSO J1126-0126 QSO 11 26 17.4050437464 -01 26 32.582173560   20.16 19.48     ~ 36 0
66 QSO J1126-0124 QSO 11 26 34.2851290008 -01 24 36.835650936   20.52 19.76     ~ 34 0
67 QSO J1135+0842 QSO 11 35 36.4035540672 +08 42 19.019448504   19.98 19.14     ~ 42 0
68 QSO B1159+123 QSO 12 01 47.9118521640 +12 06 30.253926276   18.85 18.16     ~ 108 0
69 QSO J1202-0054 QSO 12 02 10.0843154832 -00 54 25.567831008   20.44 19.60     ~ 44 0
70 QSO J1248+1304 QSO 12 48 37.3167079800 +13 04 40.937966616   20.35 19.50     ~ 36 0
71 QSO J1249-0159 QSO 12 49 57.2390828736 -01 59 28.777376220   18.93 18.19     ~ 64 0
72 QSO J1304+0239 QSO 13 04 52.5787092048 +02 39 24.958302228   19.86 19.02     ~ 42 0
73 SDSS J131242.86+084105.0 QSO 13 12 42.8679333912 +08 41 05.098313040   20.27 19.42     ~ 35 0
74 QSO J1320-0523 QSO 13 20 29.9690800824 -05 23 35.374439220   18.1 16.54     ~ 44 0
75 QSO J1323+1405 QSO 13 23 46.0565175792 +14 05 17.601150732   20.85 19.90     ~ 30 0
76 QSO J1330-2522 QSO 13 30 51.9940221240 -25 22 19.040423412     18.46     ~ 22 0
77 QSO J1331+1015 QSO 13 31 50.6979853416 +10 15 29.504637648   20.46 19.55     ~ 25 0
78 QSO B1330+0108 QSO 13 32 54.5135635824 +00 52 50.616766632   19.34 18.70     ~ 40 0
79 QSO J1336+0243 QSO 13 36 53.4373346472 +02 43 38.156769912   20.48 19.48     ~ 37 0
80 QSO J1352+1303 QSO 13 52 47.9803855272 +13 03 11.580795900   19.73 19.02     ~ 28 0
81 QSO J1401+0244 QSO 14 01 46.5361320120 +02 44 34.755692604   22.03 20.32     ~ 52 0
82 QSO J1416+1811 QSO 14 16 08.3885367120 +18 11 44.021280876   20.47 19.67     ~ 25 0
83 QSO B1418-064 Bla 14 21 07.75560722 -06 43 56.3557864   20.4 18.50 19.1   ~ 78 1
84 QSO J1442+0920 QSO 14 42 50.1217881840 +09 20 01.530811752   18.73 18.14     ~ 38 0
85 QSO B1445+101 Bla 14 45 16.46525080 +09 58 36.0727447   18.58 17.78     ~ 408 2
86 QSO J1503+0419 QSO 15 03 28.8873529680 +04 19 48.993415428   19.86 18.89     ~ 72 1
87 SDSS J151756.18+051103.5 QSO 15 17 56.1830523216 +05 11 03.614451216   20.21 19.45     ~ 35 0
88 QSO J1524+2123 QSO 15 24 36.0827330112 +21 23 09.151306476   19.30 18.58     ~ 31 0
89 QSO J1542+0955 QSO 15 42 37.7111267496 +09 55 58.892093652   21.01 19.93     ~ 27 0
90 SDSS J155255.04+100538.3 QSO 15 52 55.0453432176 +10 05 38.288551344   20.64 19.75     ~ 29 0
91 QSO B1618-0035 QSO 16 21 16.9228185456 -00 42 50.909201856   18.92 17.97     ~ 86 0
92 QSO J1633+1411 QSO 16 33 19.6287438288 +14 11 42.103797792   21.64 20.28     ~ 46 0
93 QSO J1658-0739 Bla 16 58 44.06196578 -07 39 17.6944850       18.76   ~ 62 1
94 QSO J1723+2243 QSO 17 23 23.1074068680 +22 43 57.140264100     18.17     ~ 42 0
95 QSO J2215-1611 QSO 22 15 27.2920172928 -16 11 33.057278052     18.10     ~ 58 0
96 QSO J2216-6714 QSO 22 16 52.0188194640 -67 14 43.661954400     18.06     ~ 25 0
97 QSO B2237-0607 QSO 22 39 53.6812264896 -05 52 19.996061772     18.3     ~ 120 0
98 QSO B2248-1244 QSO 22 51 18.1049437608 -12 27 03.295641708     18.5     ~ 31 0
99 QSO J2344+0342 QSO 23 44 03.1101598920 +03 42 26.725817304     18.20     ~ 51 0
100 QSO J2349-3712 QSO 23 49 13.7825429232 -37 12 59.310558144     18.69     ~ 26 0

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