2017MNRAS.471.2952M

Query : 2017MNRAS.471.2952M

2017MNRAS.471.2952M - Mon. Not. R. Astron. Soc., 471, 2952-2973 (2017/November-1)

Connecting X-ray absorption and 21 cm neutral hydrogen absorption in obscured radio AGN.

MOSS V.A., ALLISON J.R., SADLER E.M., URQUHART R., SORIA R., CALLINGHAM J.R., CURRAN S.J., MUSAEVA A., MAHONY E.K., GLOWACKI M., FARRELL S.A., BANNISTER K.W., CHIPPENDALE A.P., EDWARDS P.G., HARVEY-SMITH L., HEYWOOD I., HOTAN A.W., INDERMUEHLE B.T., LENC E., MARVIL J., McCONNELL D., REYNOLDS J.E., VORONKOV M.A., WARK R.M. and WHITING M.T.

Abstract (from CDS):

Many radio galaxies show the presence of dense and dusty gas near the active nucleus. This can be traced by both 21 cm H I absorption and soft X-ray absorption, offering new insight into the physical nature of the circumnuclear medium of these distant galaxies. To better understand this relationship, we investigate soft X-ray absorption as an indicator for the detection of associated H I absorption, as part of preparation for the First Large Absorption Survey in H I to be undertaken with the Australian Square Kilometre Array Pathfinder (ASKAP). We present the results of our pilot study using the Boolardy Engineering Test Array, a precursor to ASKAP, to search for new absorption detections in radio sources brighter than 1 Jy that also feature soft X-ray absorption. Based on this pilot survey, we detected H I absorption towards the radio source PKS 1657-298 at a redshift of z = 0.42. This source also features the highest X-ray absorption ratio of our pilot sample by a factor of 3, which is consistent with our general findings that X-ray absorption predicates the presence of dense neutral gas. By comparing the X-ray properties of active galactic nuclei with and without detection of H I absorption at radio wavelengths, we find that X-ray hardness ratio and H I absorption optical depth are correlated at a statistical significance of 4.71σ. We conclude by considering the impact of these findings on future radio and X-ray absorption studies.

Abstract Copyright: © 2017 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): methods: observational - galaxies: active - galaxies: ISM - galaxies: nuclei - radio lines: galaxies - X-rays: galaxies - X-rays: galaxies

Simbad objects: 109

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Number of rows : 109
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 NGC 315 LIN 00 57 48.88334410 +30 21 08.8119345 12.80 12.20 11.16 11.26   ~ 869 2
2 NGC 383 AGN 01 07 24.9647814840 +32 24 45.132586200   13.6 12.14     ~ 821 3
3 NAME MM J01115-7302 rG 01 11 32.48781 -73 02 09.8007   16.01   15.06   ~ 32 1
4 QSO B0108+388 Bla 01 11 37.31680 +39 06 28.1039     22 22.000   ~ 266 1
5 Z 522-118 rG 02 09 38.5601991144 +35 47 50.778945420   14.9 13.0     ~ 154 2
6 3C 66A BLL 02 22 39.6114771888 +43 02 07.799534304   15.71 15.21 14.5   ~ 942 2
7 Z 538-57 Sy1 02 23 11.41124925 +42 59 31.3853324   15.71 14.81     ~ 582 2
8 7C 022118.10+273638.00 Sy1 02 24 12.2865158736 +27 50 11.538285648   19.502 18 18.263   ~ 210 1
9 QSO B0235+1624 BLL 02 38 38.93010450 +16 36 59.2745528   16.46 15.50 15.92   ~ 1614 2
10 QSO B0237-2322 QSO 02 40 08.1743783856 -23 09 15.729012036   16.78 16.63     ~ 516 1
11 NGC 1167 LIN 03 01 42.3322774176 +35 12 20.300948892   13.84 12.77     ~ 382 1
12 QSO B0309+411 Bla 03 13 01.96212044 +41 20 01.1834497   18.0   14.59   ~ 178 1
13 ESO 248-6 QSO 03 17 57.67946154 -44 14 17.1632318   14.85   13.16   ~ 85 3
14 NGC 1275 Bla 03 19 48.1599902040 +41 30 42.108850836   13.10 12.48 11.09   ~ 4243 3
15 Z 390-93 QSO 03 27 54.19499480 +02 33 41.9824262   13.95       ~ 230 1
16 PMN J0331-5242 rG 03 31 14.9982213720 -52 41 48.109491240   16.42       ~ 24 1
17 3C 111 Sy1 04 18 21.2772425736 +38 01 35.801359968   19.75 18.05     ~ 1002 2
18 LEDA 15322 Sy2 04 30 22.0111698936 -61 32 00.686475708   15.98       ~ 37 0
19 PKS 0428+205 rG 04 31 03.76141386 +20 37 34.2648470   22.174   19.085   ~ 198 1
20 MCG+01-12-009 Bla 04 33 11.0956735296 +05 21 15.619461552   15.72 15.05 10.08   ~ 2099 2
21 ICRF J050321.1+020304 Sy2 05 03 21.19716454 +02 03 04.6765714   22.500 21.350 20.682   ~ 196 1
22 ESO 362-21 BLL 05 22 57.98464178 -36 27 30.8512953   15.26 14.62 14.48   ~ 873 2
23 QSO B0537-286 Bla 05 39 54.28147904 -28 39 55.9481236   19.70 20.0 18.789   ~ 314 1
24 7C 055201.39+394824.00 Bla 05 55 30.80561419 +39 48 49.1649683     18.30 17.5   ~ 527 2
25 2C 524 Sy2 06 09 32.701768 +48 04 17.04207   21.198 18.00 18.767   ~ 182 1
26 LEDA 19057 LIN 06 26 49.5758024688 -54 32 34.581523416   15.83 16 13.52   ~ 50 1
27 QSO B0625-354 BLL 06 27 06.7286533392 -35 29 15.363665088   14.93       ~ 206 1
28 3C 183 rG 07 35 22.4525276184 +43 44 25.041453720           ~ 56 1
29 6C 073759+311929 Bla 07 41 10.70330407 +31 12 00.2291151   17.02 16.89 16.322   ~ 468 1
30 Z 262-29 rG 07 48 36.8495635584 +55 48 58.722052320   15.2 15.2     ~ 33 1
31 NGC 2484 Sy2 07 58 28.10812817 +37 47 11.8076475   14.15 14.9     ~ 284 1
32 2XMM J080535.0+240951 Sy2 08 05 35.0054956728 +24 09 50.330022516   15.46       ~ 336 1
33 4C 55.16 Bla 08 34 54.90398776 +55 34 21.0703409   20.75 19.45 17.180   ~ 297 2
34 3C 207.0 Bla 08 40 47.58842599 +13 12 23.5637506   18.58 18.15 17.622   ~ 455 1
35 4C 71.07 Bla 08 41 24.36528508 +70 53 42.1730435     17.30 16.8   ~ 818 1
36 NGC 2639 Sy2 08 43 38.0682469032 +50 12 19.942091604 12.90 12.56 11.65     ~ 451 2
37 PG 0851+202 BLL 08 54 48.8749846272 +20 06 30.639583620   15.649 15.146 15.446   ~ 2513 1
38 PKS J0901-2555 SyG 09 01 47.2741003747 -25 55 16.067903655   18.5       ~ 71 1
39 NVSS J090530+340756 rG 09 05 30.101 +34 07 56.90   24.0 23.800 23.500   ~ 163 1
40 ICRF J092338.8-213547 Bla 09 23 38.8852056768 -21 35 47.129767764   13.0   12.80   ~ 99 1
41 6C 095456+654857 BLL 09 58 47.2451872176 +65 33 54.819354600     17.0 15.75   ~ 771 1
42 ICRF J103507.0+562846 Sy2 10 35 07.03998083 +56 28 46.7956247   20.2 21.244 20.200   ~ 205 1
43 4C 01.28 BLL 10 58 29.60520810 +01 33 58.8237454   18.74 18.28 16.68   ~ 828 2
44 Z 184-50 BLL 11 04 27.3140835504 +38 12 31.798495872   13.50 12.90 8.31   ~ 2841 1
45 ICRF J112027.8+142054 Sy2 11 20 27.80814059 +14 20 54.9730732   20 20.935 20.100   ~ 175 1
46 NGC 3665 GiG 11 24 43.630 +38 45 46.05 13.71 13.26 11.62     ~ 364 1
47 NGC 3862 Sy2 11 45 05.00904503 +19 36 22.7409909   14.98 13.97     ~ 646 1
48 PB 3894 Sy1 12 14 17.6738687784 +14 03 13.182723144   14.46 14.19     ~ 873 0
49 NGC 4278 LIN 12 20 06.8242 +29 16 50.722 11.54 11.09 10.16     ~ 988 2
50 PG 1218+304 BLL 12 21 21.9426947832 +30 10 37.158534012   16.50 15.85 15.7   ~ 497 1
51 7C 1219+2830 BLL 12 21 31.6904439888 +28 13 58.500308172   16.81 16.11 14.24   ~ 924 1
52 3C 273 BLL 12 29 06.6998257176 +02 03 08.597629980   13.05 14.830 14.11   ~ 6022 1
53 M 87 AGN 12 30 49.42338414 +12 23 28.0436859 10.16 9.59 8.63   7.49 ~ 7815 3
54 NGC 4696 rG 12 48 49.2724775784 -41 18 39.304053252   11.21   10.7   ~ 510 3
55 3C 279 Bla 12 56 11.16657958 -05 47 21.5251510   18.01 17.75 15.87   ~ 3205 2
56 2MASX J12571157-1724344 LIN 12 57 11.580 -17 24 34.47   13.50   12.56   ~ 62 2
57 ACO 1644 ClG 12 57 11.6 -17 24 34           ~ 391 1
58 NGC 4945 Sy2 13 05 27.279 -49 28 04.44   9.31 14.40 7.55   ~ 1582 2
59 US 371 BLL 13 10 28.66385420 +32 20 43.7828340   15.61 15.24 17.91   ~ 917 1
60 NGC 5090 rG 13 21 12.84471811 -43 42 16.8452073   12.59 11.51 10.84   ~ 208 1
61 4C 32.44 QSO 13 26 16.5142 +31 54 09.522   21.367 19.822 18.882   ~ 181 1
62 7C 132816.2+252436 QSO 13 30 37.6960744824 +25 09 10.983105972   18.31 17.67     ~ 373 1
63 IC 4296 rG 13 36 39.03253319 -33 57 57.0730368   11.52 12.99 10.00 10.79 ~ 520 2
64 NGC 5363 rG 13 56 07.24367 +05 15 16.9200 12.59 12.12 10.51     ~ 235 1
65 ICRF J140028.6+621038 Sy2 14 00 28.64823540 +62 10 38.5885744   22.137 20.373 19.530   ~ 187 1
66 Mrk 668 BLL 14 07 00.39441712 +28 27 14.6901341   16.13 15.35 10.29   ~ 826 3
67 IC 4374 Bla 14 07 29.76229070 -27 01 04.2916695   13.61   11.79 12.55 ~ 142 3
68 8C 1443+773 Sy2 14 43 14.5707907691 +77 07 27.607161183   19   18.730   ~ 152 1
69 NVSS J144712+404745 rG 14 47 12.7625124264 +40 47 44.987437896           ~ 28 1
70 Z 21-63 BLL 15 16 40.21905672 +00 15 01.9090936   17.28 16.64 10.53   ~ 217 1
71 3C 318.0 QSO 15 20 05.4773966208 +20 16 05.471959692   21.93 20.9     ~ 197 1
72 RX J1532.0+3016 BLL 15 32 02.2318415520 +30 16 28.855961652           ~ 97 1
73 LEDA 2828587 Sy1 15 55 21.38568 -79 40 36.3288   19.0 19.0     ~ 53 1
74 QSO B1549-790 Bla 15 56 58.86979525 -79 14 04.2817241   18.80 18.800 17.84   ~ 221 1
75 NGC 6166 Sy2 16 28 38.24470063 +39 33 04.2335319   12.78 11.78     ~ 793 2
76 NGC 6251 Bla 16 32 31.96989253 +82 32 16.3999044 15.24 14.66 12.89 7.62   ~ 772 1
77 PKS 1637-77 rG 16 44 16.1207820000 -77 15 48.822593256   15.30 15.5 14.75   ~ 86 1
78 Z 225-7 BLL 16 53 52.21668403 +39 45 36.6088754 14.09 14.15 13.29 8.26   ~ 2304 2
79 PKS 1657-298 Rad 17 01 09.715 -29 54 41.83           ~ 13 1
80 2MASS J17011004-2954423 NIR 17 01 10.0403872032 -29 54 42.448471668           ~ 2 0
81 2MASS J17011007-2955021 NIR 17 01 10.075 -29 55 02.12           ~ 1 0
82 2MASS J17011032-2954228 NIR 17 01 10.325 -29 54 22.88           ~ 1 0
83 MXB 1658-298 LXB 17 02 06.54 -29 56 44.1 18.35 18.75 18.3     ~ 381 0
84 6C 170204+454510 Sy1 17 03 30.3824218008 +45 40 47.166180564   16.0       ~ 170 2
85 4C -00.67 Sy2 17 20 28.1680537512 -00 58 46.582453920   15.36       ~ 345 1
86 PMN J1726-6427 rG 17 26 57.82616020 -64 27 52.7050758           ~ 17 1
87 QSO B1725-142 QSO 17 28 19.7893499760 -14 15 55.854918288   14.69 14.03 13.7   ~ 362 0
88 PKS 1740-51 rG 17 44 25.45488279 -51 44 43.7403710     20.2     ~ 99 2
89 QSO B1814-637 Bla 18 19 35.00241 -63 45 48.1926   16.80 14.40 13.4   ~ 154 1
90 Z 173-14 Sy1 18 35 03.3896172576 +32 41 46.855964616   16.50 15.39 10.50   ~ 688 1
91 3C 390.3 Bla 18 42 08.9904975672 +79 46 17.127835104   16.06 15.38     ~ 1381 1
92 QSO B2000-330 Bla 20 03 24.1161711720 -32 51 45.136882080   18.83 18.4 17.11   ~ 279 1
93 PKS 2008-068 rG 20 11 14.21582587 -06 44 03.5555103     17.2     ~ 91 1
94 QSO B2126-15 Bla 21 29 12.17589329 -15 38 41.0419083   17.61 17.3 17.3   ~ 521 1
95 ICRF J213750.0-204231 Sy1 21 37 50.00785656 -20 42 31.6728477   20.400 19.4 19.286   ~ 102 1
96 PKS J2156-1127 Rad 21 56 44.064 -11 27 50.19           ~ 12 1
97 ESO 75-41 BLL 21 57 05.9801262624 -69 41 23.686042524   14.23 13.79 12.94   ~ 299 1
98 NAME BL Lac BLL 22 02 43.2913536816 +42 16 39.979416792   15.66 14.72     ~ 2397 1
99 4C 31.63 BLL 22 03 14.9756830008 +31 45 38.269473228   15.85 15.58 14.33   ~ 523 1
100 6dFGS gJ220538.6-053533 LIN 22 05 38.6347977408 -05 35 32.533391760   15.89   14.78   ~ 27 1
101 LEDA 68751 Sy1 22 23 49.5398449645 -02 06 12.856394895   16.93 15.77 16.02   ~ 511 2
102 3C 452 Sy2 22 45 48.7616172744 +39 41 15.906782184   17.60 16.56     ~ 391 1
103 3C 454.0 QSO 22 51 34.7277468096 +18 48 40.087264428   18.52 18.4     ~ 232 2
104 3C 454.3 Bla 22 53 57.7480438728 +16 08 53.561508864   16.57 16.10 15.22   ~ 3004 2
105 IC 1459 rG 22 57 10.60682195 -36 27 43.9966421   10.96 11.85 9.34 10.3 ~ 652 2
106 ICRF J231635.1+040518 Sy2 23 16 35.1933566880 +04 05 18.297101076   17.54 16.68 17.220   ~ 309 1
107 MCG-07-47-031 BLL 23 19 05.8954756632 -42 06 48.297034584   16.60 15.46     ~ 121 0
108 NGC 7720 Sy1 23 38 29.38324020 +27 01 53.2580084   13.9 13.3     ~ 565 4
109 6C 235239+493337 BLL 23 55 09.45814429 +49 50 08.3394994   21.101   18.400   ~ 284 1

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