2011A&A...527A..90P

Query : 2011A&A...527A..90P

2011A&A...527A..90P - Astronomy and Astrophysics, volume 527A, 90-90 (2011/3-1)

The WSRT Virgo HI filament survey. I. Total power data.

POPPING A. and BRAUN R.

Abstract (from CDS):

Observations of neutral hydrogen can provide a wealth of information about the kinematics of galaxies. To learn more about the large-scale structures and accretion processes, the extended environment of galaxies have to be observed. Numerical simulations predict a cosmic web of extended structures and gaseous filaments. To observe the direct vicinity of galaxies, column densities have to be achieved that probe the regime of Lyman limit systems. Typically, HI observations are limited to a brightness sensitivity of N_HI∼10¹⁹cm^–2, but this has to be improved by ∼2 orders of magnitude. With the Westerbork Synthesis Radio Telescope (WSRT), we mapped the galaxy filament connecting the Virgo Cluster with the Local Group. About 1500 square degrees on the sky was surveyed with Nyquist sampled pointings. By using the WSRT antennas as single-dish telescopes instead of the more conventional interferometer, we were very sensitive to extended emission. The survey consists of a total of 22000 pointings, and each pointing was observed for two minutes with 14 antennas. We reached a flux sensitivity of 16mJy/beam over 16km/s, corresponding to a brightness sensitivity of N_HI∼3.5x10¹⁶cm^–2 for sources that fill the beam. At a typical distance of ten Mpc probed by this survey, the beam extent corresponds to about 145kpc on linear scale. Although the processed data cubes are affected by confusion owing to the very large beam size, we can identify most of the galaxies that have been observed in HIPASS. Furthermore we made 20 new candidate detections of neutral hydrogen. Several of the candidate detections can be linked to an optical counterpart. The majority of the features, however, do not show any signs of stellar emission. Their origin is investigated further with accompanying HI surveys, which will be published in follow-up papers.

Abstract Copyright: ∼

Journal keyword(s): galaxies: evolution - intergalactic medium

VizieR on-line data: <Available at CDS (J/A+A/527/A90): table1.dat table2.dat notes.dat>

Nomenclature: Tables 1-2: WVFS JHHMM+DDMM N=128+20.

Simbad objects: 161

Full paper

View the references in ADS

Number of rows : 161

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	M 31	G	00 42 44.330	+41 16 07.50	4.86	4.36	3.44			~	12379	1
2	M 33	GiG	01 33 50.8965749232	+30 39 36.630403128	6.17	6.27	5.72			~	5723	1
3	3C 48	QSO	01 37 41.2996631208	+33 09 35.080388820		16.62	16.20			~	2765	2
4	UGC 4781	EmG	09 06 34.291	+06 18 13.70		14.90				~	47	0
5	UGC 4797	G	09 08 10.1916625656	+05 55 41.538664560		15.7				~	47	0
6	LEDA 2807128	LSB	09 08 36.540	+05 17 26.83		17.0				~	34	0
7	NGC 2775	G	09 10 20.1334093488	+07 02 16.874157048		11.417	10.481	9.920	8.994	~	347	0
8	NGC 2777	G	09 10 41.887	+07 12 24.12		13.9				~	56	1
9	UGC 5205	GiP	09 44 07.203	-00 39 30.11		14.9		14.68	15.3	~	35	0
10	IC 559	G	09 44 43.816	+09 36 57.37		15.0				~	51	0
11	6dFGS gJ094446.2-004119	EmG	09 44 46.230	-00 41 18.30		16.25		15.54	15.5	~	16	0
12	UGC 5288	PaG	09 51 17.241	+07 49 32.05	15.07	14.65	14.18	13.99		~	83	0
13	NGC 3044	G	09 53 40.884	+01 34 46.74		12.7		12.7	12.3	~	218	1
14	NGC 3049	EmG	09 54 49.651	+09 16 17.90		13.04				~	321	1
15	UGC 5522	G	10 13 58.795	+07 01 26.88		14.4				~	62	0
16	NGC 3169	GiP	10 14 15.0379414272	+03 27 57.941639856		13.46	12.41			~	358	1
17	UGC 5539	LSB	10 15 55.00	+02 41 07.7		15.3				~	24	0
18	UGC 5551	G	10 17 11.520	+04 19 55.82		17				~	22	0
19	NGC 3209	GiG	10 20 38.4176527296	+25 30 18.241185348		13.9				~	45	0
20	UGC 5677	G	10 28 38.16	+03 33 31.6		15.2				~	36	0
21	UGC 5708	GiP	10 31 13.307	+04 28 20.08		14.60				~	66	0
22	UGC 5797	EmG	10 39 25.193	+01 43 09.08	15.68	15.07	14.59	14.37	14.4	~	48	0
23	NGC 3365	GiG	10 46 12.649	+01 48 47.95		13.0		13.0	12.9	~	96	0
24	NGC 3423	AGN	10 51 14.3245691976	+05 50 24.158965920		12.1				~	170	0
25	LEDA 2807138	LSB	10 51 32.0	+03 27 14		16.5				~	8	0
26	UGC 5974	GiG	10 51 35.311	+04 34 58.41		14.00				~	43	1
27	NGC 3495	GiG	11 01 16.168	+03 37 40.93		13.10				~	149	0
28	NGC 3521	LSB	11 05 48.5680991376	-00 02 09.245076540	10.06	9.83	9.02	10.1	9.6	~	791	2
29	NGC 3526	GiG	11 06 56.623	+07 10 26.12		13.70				~	115	0
30	LEDA 33959	EmG	11 10 54.7	+01 05 34		15.7		15.5	15.8	~	22	0
31	NGC 3611	GiG	11 17 30.2	+04 33 19		12.4				~	122	0
32	LEDA 1367320	G	11 19 28.100	+09 35 44.29						~	21	0
33	Z 39-123	GiG	11 20 15.59	+02 31 33.0		14.4				~	59	0
34	NGC 3664	GiP	11 24 24.258	+03 19 29.95		13.6				~	121	0
35	IC 692	GiG	11 25 53.492	+09 59 14.16		14.1				~	46	0
36	IC 2828	EmG	11 27 10.9210049136	+08 43 51.666910572		14.7				~	51	0
37	UGC 6457	EmG	11 27 12.2333953944	-00 59 41.002508328		14.973		14.335	14.7	~	41	0
38	NGC 3705	GiG	11 30 07.456	+09 16 35.87	12.00	11.86	11.07			~	169	1
39	UGC 6578	EmG	11 36 36.636	+00 49 02.61		15.3		14.518	15.1	~	119	0
40	LEDA 36594	LSB	11 44 54.302	+02 09 46.98		17.6				~	16	0
41	NGC 4030	GiP	12 00 23.6102390784	-01 06 00.197099136		11.42		10.3	10.4	~	326	1
42	NGC 4116	GiP	12 07 37.156	+02 41 25.59		12.41	11.97			~	170	2
43	NGC 4123	AGN	12 08 11.1187718376	+02 52 41.781736956		13.1				~	333	2
44	UGC 7178	G	12 11 03.666	+02 00 24.04		15.852		15.429		~	54	1
45	UGC 7185	GiG	12 11 27.300	+02 55 30.97		15.5				~	27	0
46	LEDA 135791	LSB	12 12 25.536	+02 48 33.93		15.4				~	15	0
47	UGC 7239	G	12 14 08.841	+07 46 34.47		15.0				~	69	0
48	NGC 4207	GiG	12 15 30.436	+09 35 05.78		13.7				~	155	0
49	SDSS J121643.27+041537.7	G	12 16 43.270	+04 15 37.75						~	1	0
50	UGC 7307	LSB	12 17 04.235	+10 00 20.02		16.5				~	54	0
51	UGC 7332	G	12 17 55.905	+00 26 11.10		14.8		14.7	16.6	~	49	0
52	NGC 4241	GiG	12 17 59.9038110672	+06 39 15.053590548		14.4				~	114	0
53	LEDA 39734	LSB	12 19 53.386	+06 39 55.97		19				~	49	0
54	UGC 7394	GiG	12 20 27.627	+01 28 12.16		15.2		14.110	14.4	~	70	0
55	M 61	Sy2	12 21 54.9282582888	+04 28 25.597367184	10.07	10.18	9.65			~	967	2
56	NGC 4301	GiG	12 22 27.246	+04 33 58.69		13.40	12.99			~	116	1
57	NGC 4316	GiG	12 22 42.221	+09 19 58.12		14.0				~	149	0
58	NGC 4318	GiG	12 22 43.2906579576	+08 11 53.850831504		14.1				~	128	0
59	Z 42-85	EmG	12 24 40.052	+03 18 12.22		14.9				~	32	0
60	NGC 4376	GiG	12 25 18.0159139968	+05 44 28.133108988		13.9				~	121	0
61	UGC 7512	LSB	12 25 40.875	+02 09 33.36		16.706		16.629		~	55	0
62	UGC 7513	GiG	12 25 42.634	+07 13 00.15		14.4				~	174	0
63	MCG+01-32-056	GiG	12 25 52.500	+05 48 36.32		15.2				~	71	0
64	NGC 4411	GiP	12 26 29.859	+08 52 20.08		14.4				~	131	0
65	NAME Virgo Cluster	ClG	12 26 32.1	+12 43 24						~	6506	0
66	NGC 4423	GiG	12 27 08.972	+05 52 48.81		14.4				~	132	0
67	Z 42-108	GiG	12 27 11.39	+07 15 45.2		15.3				~	97	0
68	NGC 4430	GiP	12 27 26.4060329472	+06 15 45.972776664		13.4				~	156	0
69	NAME DW 1225+0152	LSB	12 27 46.1	+01 36 01	15.45	16.02	15.92	15.73		~	42	0
70	UGC 7590	GiG	12 28 18.772	+08 43 46.08		15.0				~	105	0
71	NGC 4457	LIN	12 28 59.0252479200	+03 34 14.215556928		11.9				~	299	0
72	UGC 7612	GiG	12 29 02.140	+02 43 23.53		15.2				~	77	0
73	IC 3414	GiG	12 29 28.7704007928	+06 46 18.553776924		14.2				~	108	0
74	UGC 7642	LSB	12 30 13.38048	+02 37 30.5436		15.3				~	43	0
75	HIPASS J1230+09	HI	12 30 22.3	+09 31 28						~	4	0
76	NAME Reinmuth 80	H2G	12 32 27.94560	+00 23 26.2716		12.7		12.8	12.9	~	115	0
77	NGC 4437	AGN	12 32 45.586	+00 06 54.14		11.1		11.1	10.6	~	273	0
78	NGC 4519	GiG	12 33 30.278	+08 39 16.06		12.8				~	273	0
79	UGC 7715	GiG	12 33 55.2790220232	+03 32 50.540353440		15.3				~	36	0
80	IC 3576	AGN	12 36 37.675	+06 37 15.19		15.90	15.40			~	113	1
81	UGC 7780	G	12 36 42.133	+03 06 32.35		16.5				~	44	0
82	IC 3591	bCG	12 37 02.697	+06 55 33.26		14.6				~	127	1
83	NGC 4592	GiG	12 39 18.7543040040	-00 31 55.529665824		12.4		12.3	12.1	~	135	0
84	LEDA 42666	LSB	12 42 18.602	+05 44 21.90		17				~	36	0
85	NGC 4630	H2G	12 42 31.146	+03 57 37.29		13.4				~	139	0
86	LEDA 42768	LSB	12 43 07.4982888312	+07 39 16.422815376		18				~	48	0
87	UGC 7911	GiG	12 44 28.7701941216	+00 28 05.159668620		13.3		13.485	13.0	~	71	0
88	NGC 4666	GiP	12 45 08.676	-00 27 42.88		11.7		11.5	10.7	~	376	1
89	UGC 7943	GiG	12 46 45.71448	+05 57 19.2276		14.7				~	60	0
90	NGC 4688	GiP	12 47 46.5220541760	+04 20 09.766119156		14.5				~	170	1
91	NGC 4698	Sy2	12 48 22.9082830584	+08 29 14.667552276		13.24	12.27			~	476	0
92	NGC 4701	GiG	12 49 11.5931072112	+03 23 19.389227964		13.1				~	162	0
93	UGC 7983	G	12 49 47.020	+03 50 32.28		16.5				~	28	0
94	NGC 4713	GiG	12 49 57.8802780576	+05 18 40.933127196		12.3				~	298	0
95	SDSS J125249.40+014404.3	G	12 52 49.400	+01 44 04.28						~	5	0
96	NGC 4765	GiG	12 53 14.6103052812	+04 27 47.472430278		13.0				~	115	0
97	NGC 4771	EmG	12 53 21.273	+01 16 09.02		12.92		12.4	12.2	~	123	1
98	NGC 4772	LIN	12 53 29.1636448512	+02 10 06.146331708	12.29	11.96	11.04			~	246	1
99	APG 277	IG	12 54 49.9	+02 38 57						~	59	1
100	UGC 8041	EmG	12 55 12.6507011952	+00 07 00.036186204		14.694		16.214	12.7	~	131	0
101	NGC 4808	GiG	12 55 48.940	+04 18 14.74		12.5				~	224	0
102	UGC 8053	EmG	12 55 49.0635382929	+04 00 50.139602077		15.0				~	53	0
103	UGC 8074	GiG	12 57 44.590	+02 41 30.27		15.4				~	32	0
104	UGC 8105	EmG	12 59 57.748	+02 03 01.09		15.5		14.458		~	60	0
105	NGC 4900	EmG	13 00 39.1193785512	+02 30 05.154593868		12.8				~	247	0
106	NGC 4904	Sy1	13 00 58.667	-00 01 38.83		13.2				~	154	0
107	UGC 8276	G	13 12 06.554	+05 28 32.53		18				~	30	0
108	UGC 8285	G	13 12 33.270	+07 11 03.33		15.2				~	34	0
109	UGC 8298	G	13 13 19.653	+10 11 38.53		15.2				~	33	0
110	6dFGS gJ131742.7-010005	LSB	13 17 43.1868710184	-01 00 03.820032216		16.0		15.7	16.2	~	42	0
111	UGC 8382	G	13 20 32.310	+05 24 25.53		15.3				~	26	0
112	UGC 8385	G	13 20 38.718	+09 47 10.11		14.6				~	55	0
113	NGC 5147	H2G	13 26 19.7264077272	+02 06 02.697188760		12.7				~	108	0
114	LEDA 135827	LSB	13 28 11.832	+02 16 55.94		16.3				~	21	0
115	M 51	GiP	13 29 52.698	+47 11 42.93		9.26	8.36	8.40		~	4247	4
116	3C 286	Sy1	13 31 08.2883506368	+30 30 32.960091564		17.51	17.25			~	4251	2
117	UGC 8575	GiG	13 35 45.619	+08 58 09.56		15.5				~	49	0
118	UGC 8614	GiG	13 37 26.225	+07 38 51.17		15.4				~	49	0
119	NGC 5248	GiG	13 37 32.0145074088	+08 53 06.496982448		11.4				~	492	0
120	UGC 8629	GiG	13 38 30.648	+08 26 32.36		15.5				~	37	0
121	NGC 5300	EmG	13 48 16.0374180816	+03 57 03.109732632		13.7				~	135	0
122	NGC 5334	LSB	13 52 54.4632396696	-01 06 52.604999568		12.0		12.3	12.1	~	164	0
123	NGC 5348	GiP	13 54 11.254	+05 13 37.91		14.5				~	91	0
124	NGC 5364	GiP	13 56 12.004	+05 00 52.06		13.2				~	252	0
125	UGC 8995	GiC	14 04 47.380	+08 48 03.89		14.9				~	56	0
126	NGC 5496	GiG	14 11 37.855	-01 09 31.39		13.40		13.0	12.8	~	129	0
127	LEDA 140287	G	14 16 57.272	+03 50 10.08						~	14	0
128	UGC 9169	G	14 19 44.637	+09 21 44.46		14.7				~	44	0
129	LEDA 4112990	G	14 20 44.531	+08 37 35.88						~	11	0
130	NGC 5577	GiP	14 21 13.110	+03 26 08.76		13.05				~	125	1
131	UGC 9215	EmG	14 23 27.1688465352	+01 43 34.412659176		13.16		12.555	13.0	~	107	1
132	UGC 9225	G	14 24 24.616	+08 16 39.48		15.4				~	21	0
133	UGC 9249	G	14 26 59.776	+08 41 01.02		15.1				~	42	0
134	UGC 9299	GiG	14 29 34.5926526984	-00 01 05.660319828		13.8		14.0	14.0	~	89	0
135	NGC 5645	GiG	14 30 39.3607130040	+07 16 30.307322856		12.8				~	124	0
136	IC 1024	GiG	14 31 27.221	+03 00 32.78		13.87				~	113	1
137	NGC 5669	H2G	14 32 43.476	+09 53 25.47		13.2				~	187	0
138	NGC 5668	G	14 33 24.3419973936	+04 27 01.650790800		12.7				~	210	0
139	UGC 9385	G	14 35 22.784	+05 16 35.61		17				~	33	0
140	UGC 9432	GiG	14 39 04.536	+02 56 58.96		14.60				~	24	1
141	NGC 5701	GiG	14 39 11.0751915840	+05 21 48.493104264	12.03	11.76	10.88			~	234	1
142	NGC 5740	GiP	14 44 24.4374499392	+01 40 47.224019676		12.5		12.5	12.0	~	166	0
143	HIPASS J1452+03	HI	14 52 40.3	+03 15 55						~	3	0
144	NGC 5774	GiP	14 53 42.46224	+03 34 56.9532		13.9	12.94			~	155	1
145	NGC 5806	AGN	15 00 00.4088018736	+01 53 28.779594792		12.40	11.70	10.94	11.6	~	276	1
146	SDSS J150103.32+081936.5	G	15 01 03.320	+08 19 36.53						~	1	0
147	HIPASS J1515+05	HI	15 15 18.5	+05 50 20						~	3	0
148	NGC 5921	G	15 21 56.561	+05 04 13.94		12.7				~	269	0
149	2MASS J15244443+0433020	LM*	15 24 44.4918184512	+04 33 02.398867848						M0V	4	0
150	SDSS J152444.64+043301.8	G	15 24 44.64240	+04 33 01.8504						~	4	0
151	SDSS J152445.97+043532.5	G	15 24 45.977	+04 35 32.52						~	5	0
152	NGC 5964	EmG	15 37 36.2103407496	+05 58 26.360661972		12.45	11.82	11.48	10.89	~	121	0
153	UGC 10023	LSB	15 46 09.7256696088	+06 53 54.511723320		15.2				~	32	0
154	Z 79-46	G	16 06 02.185	+08 30 24.34		15.6				~	16	0
155	IC 1197	G	16 08 17.292	+07 32 18.79		14.7				~	66	0
156	UGC 10229	G	16 09 43.960	-00 06 54.48		15.7		15.9	17.0	~	22	0
157	NGC 6106	G	16 18 47.1730173576	+07 24 38.951833860		13.4				~	112	0
158	Z 24-1	G	16 19 18.1	+01 42 12		15.1		15.2	15.0	~	13	0
159	UGC 10475	G	16 37 53.6011792344	+07 33 45.195407136		15.7				~	19	0
160	LEDA 2801031	G	16 56 38.5	+07 59 55						~	10	0
161	NAME Local Group	GrG	~	~						~	8148	0

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