2006A&A...450..933Z

Query : 2006A&A...450..933Z

2006A&A...450..933Z - Astronomy and Astrophysics, volume 450, 933-944 (2006/5-2)

Extragalactic H2O masers and X-ray absorbing column densities.

ZHANG J.S., HENKEL C., KADLER M., GREENHILL L.J., NAGAR N., WILSON A.S. and BRAATZ J.A.

Abstract (from CDS):

Having conducted a search for the λ∼1.3cm (22GHz) water vapor line towards galaxies with nuclear activity, large nuclear column densities or high infrared luminosities, we present H2O spectra for NGC2273, UGC5101, and NGC3393 with isotropic luminosities of 7, 1500, and 400L☉. The H2O maser in UGC5101 is by far the most luminous yet found in an ultraluminous infrared galaxy. NGC3393 reveals the classic spectrum of a ``disk maser'', represented by three distinct groups of Doppler components. As in all other known cases except NGC4258, the rotation velocity of the putative masing disk is well below 1000 km/s. Based on the literature and archive data, X-ray absorbing column densities are compiled for the 64 galaxies with reported maser sources beyond the Magellanic Clouds. For NGC2782 and NGC5728, we present Chandra archive data that indicate the presence of an active galactic nucleus in both galaxies. Modeling the hard nuclear X-ray emission, NGC2782 is best fit by a high energy reflection spectrum with NH>1024cm–2. For NGC5728, partial absorption with a power law spectrum indicates NH∼8x1023cm–2. The correlation between absorbing column and H2O emission is analyzed. There is a striking difference between kilo- and megamasers with megamasers being associated with higher column densities. All kilomasers (LH2O<10L☉) except NGC2273 and NGC5194 are Compton-thin, i.e. their absorbing columns are <1024cm–2. Among the H2O megamasers, 50% arise from Compton-thick and 85% from heavily obscured (>1023cm–2) active galactic nuclei. These values are not larger but consistent with those from samples of Seyfert 2 galaxies not selected on the basis of maser emission. The similarity in column densities can be explained by small deviations in position between maser spots and nuclear X-ray source and a high degree of clumpiness in the circumnuclear interstellar medium.

Abstract Copyright: ∼

Journal keyword(s): masers - galaxies: active - galaxies: nuclei - galaxies: statistics - radio lines: galaxies - X-rays: galaxies

CDS comments: Table 5 AM2158-380NED02 is MCG-06-48-013 in Simbad.

Simbad objects: 86

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Number of rows : 86
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 IC 10 G 00 20 25.50 +59 17 17.0   13.6 9.5     ~ 1119 1
2 NGC 235 Sy2 00 42 52.8103465632 -23 32 27.718834092   14.24   12.63   ~ 150 2
3 NGC 253 SyG 00 47 33.134 -25 17 19.68   8.03   6.94 8.1 ~ 3336 2
4 NGC 262 Sy2 00 48 47.14147900 +31 57 25.0845702 14.04 13.90 13.06 8.53   ~ 735 3
5 ESO 13-12 AG? 01 07 02.316 -80 18 27.78   13.49   11.86   ~ 64 0
6 NGC 449 Sy2 01 16 07.2128 +33 05 21.652   15.90 14.96     ~ 286 4
7 NGC 591 Sy2 01 33 31.2305692968 +35 40 05.628351108   14.71 13.90     ~ 199 2
8 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 5838 1
9 NGC 613 AGN 01 34 18.235 -29 25 06.56   10.77 12.71 9.50 10.6 ~ 410 3
10 IC 184 Sy2 01 59 51.2449132680 -06 50 25.308208716   14.92 14.10     ~ 53 2
11 NAME W 3 OH HII 02 27 04.1 +61 52 22           ~ 1027 2
12 NGC 1052 Sy2 02 41 04.79849989 -08 15 20.7519527 11.84 11.41 10.47 10.71   ~ 1299 2
13 M 77 Sy2 02 42 40.7091669408 -00 00 47.859690204 9.70 9.61 8.87 10.1 9.9 ~ 4602 2
14 Mrk 1066 Sy2 02 59 58.5970307633 +36 49 13.808979663   14.89 13.96     ~ 348 1
15 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 7066 0
16 NGC 1386 Sy1 03 36 46.238 -35 59 57.39 12.42 12.16 11.23 10.76   ~ 520 1
17 IC 342 SBG 03 46 48.514 +68 05 45.98   10.5       ~ 1517 1
18 NGC 1667 Sy2 04 48 37.1804579280 -06 19 11.824427712   13.66 12.86 11.72   ~ 364 1
19 UGC 3255 Sy2 05 09 50.167 +07 29 00.52   15.6       ~ 56 1
20 Mrk 3 Sy2 06 15 36.2812259376 +71 02 14.837219808 14.21 14.03 12.97     ~ 916 3
21 NGC 2146 SBG 06 18 37.710 +78 21 25.27 11.67 11.38 10.59     ~ 721 2
22 LEDA 19157 Sy2 06 30 25.5433597128 +63 40 41.294696952   15.7       ~ 56 2
23 NGC 2273 Sy2 06 50 08.6691789600 +60 50 44.864645136   14.50 13.54     ~ 527 3
24 ESO 428-14 Sy2 07 16 31.2062162520 -29 19 28.882826364   13.28 13.52 11.61   ~ 263 4
25 Mrk 78 Sy2 07 42 41.7033384240 +65 10 37.447730076   15.57 14.58     ~ 363 2
26 Mrk 1210 Sy2 08 04 05.8608218112 +05 06 49.823376120   14.55 13.7     ~ 306 2
27 FIRST J080431.0+360718 Sy2 08 04 31.01 +36 07 18.1   21.80 21.22     ~ 32 2
28 NGC 2639 Sy2 08 43 38.0682469032 +50 12 19.942091604 12.90 12.56 11.65     ~ 427 2
29 NGC 2782 Sy2 09 14 05.1 +40 06 49 12.29 12.30 11.63     ~ 472 3
30 NGC 2824 AGN 09 19 02.2176446256 +26 16 11.997810444   14.3       ~ 118 1
31 UGC 5101 Sy2 09 35 51.6045544584 +61 21 11.589382368   15.20 15.50     ~ 572 4
32 NGC 2960 SyG 09 40 36.3826266216 +03 34 37.235848260   13.60       ~ 175 1
33 NGC 2979 GiP 09 43 08.6387939688 -10 22 59.995646472   14       ~ 53 1
34 NGC 2992 Sy2 09 45 42.045 -14 19 34.90 13.54 13.14 12.18 12.6 12.2 ~ 890 3
35 M 82 AGN 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 5860 6
36 NGC 3079 Sy2 10 01 57.8789863992 +55 40 47.449758324 11.57 11.54 10.86     ~ 1391 3
37 IC 2560 Sy2 10 16 18.7073057664 -33 33 49.720274676   12.53 13.31 11.25 12.2 ~ 260 0
38 Mrk 34 Sy2 10 34 08.606 +60 01 52.33   15.71 14.65     ~ 250 1
39 NGC 3393 Sy2 10 48 23.4653152920 -25 09 43.487648784   13.10 13.95 11.67 12.2 ~ 424 1
40 IRAS 11058-1131 Sy2 11 08 20.2866383856 -11 48 11.925996012   16.30       ~ 57 1
41 M 108 SBG 11 11 30.967 +55 40 26.84   10.70       ~ 471 1
42 UGC 6472 C G 11 28 30.70 +58 33 48.4           ~ 351 0
43 NGC 3690 IG 11 28 31.0 +58 33 41   13.19 12.86     ~ 978 4
44 NAME NGC 3690 West GiP 11 28 31.02 +58 33 40.7   11.8       ~ 629 4
45 NAME NGC 3690 East AGN 11 28 33.07 +58 33 54.2   11.8       ~ 631 4
46 NGC 3735 Sy2 11 35 57.2748856320 +70 32 07.951921080   12.4       ~ 186 2
47 NGC 4051 Sy1 12 03 09.6101337312 +44 31 52.682601288   11.08 12.92 9.94   ~ 2165 1
48 NGC 4151 Sy1 12 10 32.5759813872 +39 24 21.063527532   12.18 11.48     ~ 3691 2
49 M 106 Sy2 12 18 57.620 +47 18 13.39   9.14 8.41 8.11   ~ 2364 3
50 NGC 4293 LIN 12 21 12.891 +18 22 56.64   11.6       ~ 292 2
51 NGC 4388 Sy2 12 25 46.820 +12 39 43.45 11.91 11.76 11.02     ~ 1341 2
52 NGC 4355 Sy2 12 26 54.6206739120 -00 52 39.421212996   14.21 13.37     ~ 491 2
53 Mrk 231 Sy1 12 56 14.2341182928 +56 52 25.238373852   14.68 13.84     ~ 1988 3
54 ESO 269-12 Sy2 12 56 40.5123469200 -46 55 34.274942184   14.72   13.54 13.9 ~ 62 0
55 NGC 4922 SyG 13 01 25.2660290577 +29 18 49.879144069   15.60 14.67 13.85   ~ 253 5
56 NGC 4939 Sy2 13 04 14.3280524928 -10 20 22.300454724   14.81 13.80 10.92   ~ 309 1
57 NGC 4945 Sy2 13 05 27.279 -49 28 04.44   9.31 14.40 7.55   ~ 1475 2
58 NGC 4968 Sy2 13 07 05.976 -23 40 37.34   13.78 14.79 12.46 12.78 ~ 182 1
59 NGC 5005 GiP 13 10 56.312 +37 03 32.19   14.67 13.67     ~ 541 2
60 M 51 Sy2 13 29 52.698 +47 11 42.93   9.26 8.36 8.40   ~ 4330 4
61 3C 286 Sy1 13 31 08.2883506368 +30 30 32.960091564   17.51 17.25     ~ 4341 2
62 NGC 5256 PaG 13 38 17.81 +48 16 41.2   14.1 13.42     ~ 430 1
63 NGC 5347 Sy2 13 53 17.7984934128 +33 29 27.011618196   13.46 12.70     ~ 353 1
64 Mrk 668 Sy1 14 07 00.39441712 +28 27 14.6901341   16.13 15.35 10.29   ~ 773 2
65 NGC 5495 Sy2 14 12 23.3599954392 -27 06 29.105572824   13.53 13.5 12.20   ~ 72 3
66 NAME Circinus Galaxy Sy2 14 13 09.906 -65 20 20.47   10.89 9.84 10.6 10.0 ~ 1217 2
67 NGC 5506 Sy2 14 13 14.8761010056 -03 12 27.556909272   15.25 14.38     ~ 1091 0
68 NGC 5643 Sy2 14 32 40.778 -44 10 28.60   11.03 13.60 9.92 10.6 ~ 572 0
69 NGC 5728 Sy2 14 42 23.8918506576 -17 15 11.240783784   14.34 13.40     ~ 595 0
70 NGC 5793 Sy2 14 59 24.807 -16 41 36.55   14.47 13.32 12.77   ~ 137 1
71 IC 4553 SyG 15 34 57.22396 +23 30 11.6084   14.76 13.88     ~ 2961 4
72 NGC 6240 Sy2 16 52 58.9 +02 24 03   14.31 13.37     ~ 1637 2
73 NGC 6323 GiG 17 13 18.0454114728 +43 46 56.772281424   14.8       ~ 93 1
74 NGC 6300 Sy2 17 16 59.5418094960 -62 49 13.946588832   10.88 13.08 9.44 10.2 ~ 431 0
75 NGC 6552 Sy2 18 00 07.2518347776 +66 36 54.360343188   14.6 13.74     ~ 161 2
76 ESO 103-35 Sy2 18 38 20.3204821536 -65 25 39.141804936   14.75 14.53 13.24   ~ 316 0
77 LEDA 90336 Sy2 19 39 38.8705621644 -01 24 33.479702649   17.82 16.42 14.83   ~ 39 1
78 QSO B1946+708 BLL 19 45 53.51966298 +70 55 48.7285673   18.726 16.70 17.199   ~ 139 2
79 3C 403.0 Sy2 19 52 15.7996999344 +02 30 24.238200816   15.42 16.5     ~ 338 1
80 IRAS 20210+1121 Sy2 20 23 25.35647 +11 31 35.2200   15.83       ~ 52 0
81 NGC 6926 Sy2 20 33 06.1084582704 -02 01 38.498909376   14.87 13.87 13.0 12.5 ~ 156 2
82 NGC 7027 PN 21 07 01.571952 +42 14 10.47120   10.358 8.831 10.157   ~ 2459 1
83 MCG-06-48-013 Sy2 22 01 17.0669321040 -37 46 23.886792120   14.90 14.03     ~ 85 3
84 NAME TXFS 2226-1821 Sy2 22 29 12.4915751904 -18 10 47.242352208   16.92   15.73   ~ 60 1
85 IC 1481 Sy1 23 19 25.0863724296 +05 54 21.836715048   14.5       ~ 95 1
86 NGC 7674 Sy2 23 27 56.6973043968 +08 46 44.253707772 13.84 13.92 13.23 12.64   ~ 700 4

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