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 N_H>10²⁴cm^–2. For NGC5728, partial absorption with a power law spectrum indicates N_H∼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 (L_H2_O<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

Full paper

View the references in ADS

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 - 2023	#notes
1	IC 10	G	00 20 23.16	+59 17 34.7		13.6	9.5			~	1090	0
2	NGC 235	Sy2	00 42 52.8103465632	-23 32 27.718834092		14.24		12.63		~	139	2
3	NGC 253	SyG	00 47 33.134	-25 17 19.68		8.03		6.94	8.1	~	3221	2
4	NGC 262	Sy2	00 48 47.14147900	+31 57 25.0845702	14.04	13.90	13.06	8.53		~	713	3
5	ESO 13-12	G	01 07 02.316	-80 18 27.78		13.49		11.86		~	62	0
6	NGC 449	Sy2	01 16 07.2105079536	+33 05 21.649015608		15.90	14.96			~	281	4
7	NGC 591	Sy2	01 33 31.2305692968	+35 40 05.628351108		14.71	13.90			~	196	2
8	M 33	GiG	01 33 50.8965749232	+30 39 36.630403128	6.17	6.27	5.72			~	5666	1
9	NGC 613	AGN	01 34 18.235	-29 25 06.56		10.77	12.71	9.50	10.6	~	392	3
10	IC 184	Sy2	01 59 51.2449132680	-06 50 25.308208716		14.92	14.10			~	50	2
11	NAME W 3 OH	HII	02 27 04.1	+61 52 22						~	1000	2
12	NGC 1052	GiP	02 41 04.79849989	-08 15 20.7519527	11.84	11.41	10.47	10.71		~	1266	2
13	M 77	GiP	02 42 40.7091669408	-00 00 47.859690204	9.70	9.61	8.87	10.1	9.9	~	4457	2
14	[OKM2018] SWIFT J0300.1+3674	Sy2	02 59 58.5970307633	+36 49 13.808979663		14.89	13.96			~	339	1
15	NAME Magellanic Clouds	GrG	03 00	-71.0						~	6696	1
16	NGC 1386	GiP	03 36 46.238	-35 59 57.39	12.42	12.16	11.23	10.76		~	509	1
17	IC 342	SBG	03 46 48.514	+68 05 45.98		10.5				~	1480	1
18	NGC 1667	Sy2	04 48 37.1804579280	-06 19 11.824427712		13.66	12.86	11.72		~	354	1
19	UGC 3255	Sy2	05 09 50.167	+07 29 00.52		15.6				~	53	1
20	Mrk 3	Sy2	06 15 36.2812259376	+71 02 14.837219808	14.21	14.03	12.97			~	895	3
21	NGC 2146	SBG	06 18 37.710	+78 21 25.27	11.67	11.38	10.59			~	688	2
22	2MASX J06302561+6340411	Sy2	06 30 25.5433597128	+63 40 41.294696952		15.7				~	52	2
23	NGC 2273	Sy2	06 50 08.6691789600	+60 50 44.864645136		14.50	13.54			~	509	3
24	ESO 428-14	Sy2	07 16 31.2062162520	-29 19 28.882826364		13.28	13.52	11.61		~	251	4
25	Mrk 78	Sy2	07 42 41.7033384240	+65 10 37.447730076		15.57	14.58			~	351	2
26	Mrk 1210	Sy2	08 04 05.8608218112	+05 06 49.823376120		14.55	13.7			~	290	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			~	408	2
29	NGC 2782	Sy2	09 14 05.120	+40 06 49.68	12.29	12.30	11.63			~	452	3
30	NGC 2824	AGN	09 19 02.2176446256	+26 16 11.997810444		14.3				~	115	1
31	UGC 5101	Sy1	09 35 51.6045544584	+61 21 11.589382368		15.20	15.50			~	558	4
32	NGC 2960	SyG	09 40 36.3826266216	+03 34 37.235848260		13.60				~	165	1
33	NGC 2979	GiP	09 43 08.6387939688	-10 22 59.995646472		14				~	51	1
34	NGC 2992	Sy2	09 45 42.045	-14 19 34.90	13.54	13.14	12.18	12.6	12.2	~	855	3
35	M 82	IG	09 55 52.430	+69 40 46.93	9.61	9.30	8.41			~	5721	6
36	NGC 3079	Sy2	10 01 57.8789863992	+55 40 47.449758324	11.57	11.54	10.86			~	1355	3
37	IC 2560	Sy2	10 16 18.7073057664	-33 33 49.720274676		12.53	13.31	11.25	12.2	~	250	0
38	Mrk 34	Sy2	10 34 08.606	+60 01 52.33		15.71	14.65			~	239	1
39	NGC 3393	Sy2	10 48 23.4653152920	-25 09 43.487648784		13.10	13.95	11.67	12.2	~	404	1
40	IRAS 11058-1131	Sy2	11 08 20.2866383856	-11 48 11.925996012		16.30				~	55	1
41	M 108	SBG	11 11 30.967	+55 40 26.84		10.70				~	456	1
42	NAME NGC 3690 West	GiP	11 28 30.69	+58 33 33.4		11.8				~	628	4
43	UGC 6472 C	G	11 28 30.70	+58 33 48.4						~	351	0
44	NGC 3690	IG	11 28 31.326	+58 33 41.80		13.19	12.86			~	957	4
45	NAME NGC 3690 East	AGN	11 28 33.07	+58 33 54.2		11.8				~	630	4
46	NGC 3735	Sy2	11 35 57.2748856320	+70 32 07.951921080		12.4				~	180	2
47	NGC 4051	Sy1	12 03 09.6101337312	+44 31 52.682601288		11.08	12.92	9.94		~	2128	1
48	NGC 4151	Sy1	12 10 32.5759813872	+39 24 21.063527532		12.18	11.48			~	3602	2
49	M 106	Sy2	12 18 57.620	+47 18 13.39		9.14	8.41	8.11		~	2292	3
50	NGC 4293	LIN	12 21 12.891	+18 22 56.64		11.6				~	282	2
51	NGC 4388	Sy2	12 25 46.820	+12 39 43.45	11.91	11.76	11.02			~	1299	2
52	NGC 4355	Sy2	12 26 54.6206739120	-00 52 39.421212996		14.21	13.37			~	469	2
53	Mrk 231	Sy1	12 56 14.2341182928	+56 52 25.238373852		14.68	13.84			~	1946	3
54	ESO 269-12	Sy2	12 56 40.5123469200	-46 55 34.274942184		14.72		13.54	13.9	~	58	0
55	NGC 4922	SyG	13 01 25.2660290577	+29 18 49.879144069		15.60	14.67	13.85		~	245	5
56	NGC 4939	Sy2	13 04 14.3280524928	-10 20 22.300454724		14.81	13.80	10.92		~	294	1
57	NGC 4945	Sy2	13 05 27.279	-49 28 04.44		9.31	14.40	7.55		~	1413	2
58	NGC 4968	Sy2	13 07 05.976	-23 40 37.34		13.78	14.79	12.46	12.78	~	173	1
59	NGC 5005	GiP	13 10 56.312	+37 03 32.19		14.67	13.67			~	528	2
60	M 51	GiP	13 29 52.698	+47 11 42.93		9.26	8.36	8.40		~	4205	4
61	3C 286	Sy1	13 31 08.2883506368	+30 30 32.960091564		17.51	17.25			~	4216	2
62	NGC 5256	PaG	13 38 17.5	+48 16 37		14.1	13.42			~	422	1
63	NGC 5347	Sy2	13 53 17.7984934128	+33 29 27.011618196		13.46	12.70			~	342	1
64	QSO B1404+286	BLL	14 07 00.39441712	+28 27 14.6901341		16.13	15.35	10.29		~	750	2
65	NGC 5495	Sy2	14 12 23.3599954392	-27 06 29.105572824		13.53	13.5	12.20		~	69	3
66	NAME Circinus Galaxy	Sy2	14 13 09.906	-65 20 20.47		10.89	9.84	10.6	10.0	~	1153	2
67	NGC 5506	AGN	14 13 14.8761010056	-03 12 27.556909272		15.25	14.38			~	1065	0
68	NGC 5643	Sy2	14 32 40.778	-44 10 28.60		11.03	13.60	9.92	10.6	~	537	0
69	NGC 5728	Sy2	14 42 23.8918506576	-17 15 11.240783784		14.34	13.40			~	564	0
70	NGC 5793	Sy2	14 59 24.807	-16 41 36.55		14.47	13.32	12.77		~	132	1
71	IC 4553	SyG	15 34 57.22396	+23 30 11.6084		14.76	13.88			~	2892	4
72	NGC 6240	Sy2	16 52 58.861	+02 24 03.55		14.31	13.37			~	1602	2
73	NGC 6323	GiG	17 13 18.0454114728	+43 46 56.772281424		14.8				~	92	1
74	NGC 6300	Sy2	17 16 59.5418094960	-62 49 13.946588832		10.88	13.08	9.44	10.2	~	414	0
75	NGC 6552	Sy2	18 00 07.2518347776	+66 36 54.360343188		14.6	13.74			~	151	2
76	ESO 103-35	Sy2	18 38 20.3204821536	-65 25 39.141804936		14.75	14.53	13.24		~	301	0
77	2MASX J19393889-0124328	AGN	19 39 38.8705621644	-01 24 33.479702649		17.82	16.42	14.83		~	37	1
78	QSO B1946+708	BLL	19 45 53.51966298	+70 55 48.7285673		18.726	16.70	17.199		~	135	2
79	3C 403.0	Sy2	19 52 15.7996999344	+02 30 24.238200816		15.42	16.5			~	323	1
80	IRAS 20210+1121	Sy2	20 23 25.35647	+11 31 35.2200		15.83				~	50	0
81	NGC 6926	Sy2	20 33 06.1084582704	-02 01 38.498909376		14.87	13.87	13.0	12.5	~	144	2
82	NGC 7027	PN	21 07 01.571952	+42 14 10.47120		10.358	8.831	10.157		~	2425	1
83	MCG-06-48-013	Sy2	22 01 17.0669321040	-37 46 23.886792120		14.90	14.03			~	82	3
84	NAME TXFS 2226-1821	LIN	22 29 12.4915751904	-18 10 47.242352208		16.92		15.73		~	57	1
85	IC 1481	Sy1	23 19 25.0863724296	+05 54 21.836715048		14.5				~	90	1
86	NGC 7674	Sy2	23 27 56.6973043968	+08 46 44.253707772	13.84	13.92	13.23	12.64		~	682	4

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