2013A&A...559A...2G

Query : 2013A&A...559A...2G

2013A&A...559A...2G - Astronomy and Astrophysics, volume 559A, 2-2 (2013/11-1)

A large-scale galaxy structure at z=2.02 associated with the radio galaxy MRC 0156-252.

GALAMETZ A., STERN D., PENTERICCI L., DE BREUCK C., VERNET J., WYLEZALEK D., FASSBENDER R., HATCH N., KURK J., OVERZIER R., RETTURA A. and SEYMOUR N.

Abstract (from CDS):

We present the spectroscopic confirmation of a structure of galaxies surrounding the radio galaxy MRC 0156-252 at z=2.02. The structure was initially discovered as an overdensity of both near-infrared selected z>1.6 and mid-infrared selected z>1.2 galaxy candidates. We used the VLT/FORS2 multi-object spectrograph to target ∼80 high-redshift galaxy candidates, and obtain robust spectroscopic redshifts for more than half the targets. The majority of the confirmed sources are star-forming galaxies at z>1.5. In addition to the radio galaxy, two of its close-by companions (<6") also show AGN signatures. Ten sources, including the radio galaxy, lie within |z-2.020|<0.015 (i.e., velocity offsets <1500km/s) and within projected 2Mpc comoving of the radio galaxy. Additional evidence suggests not only that the galaxy structure associated with MRC 0156-252 is a forming galaxy cluster but also that this structure is most probably embedded in a larger-scale structure.

Abstract Copyright: ∼

Journal keyword(s): galaxies: clusters: general - galaxies: clusters: individual: MRC 0156-252 - galaxies: large-scale structure of Universe - individual: MRC 0156-252

VizieR on-line data: <Available at CDS (J/A+A/559/A2): tablea1.dat tablea2.dat>

Nomenclature: NAME MRC 0156-252 Group N=1. Table A.1-2: [GSP2013] NNNN N=10+35.

Simbad objects: 53

Full paper

View the references in ADS

Number of rows : 53

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag B	Mag V	Sp type	#ref 1850 - 2023	#notes
1	[GSP2013] 641	G	01 58 24.280	-25 02 47.07			~	1	0
2	[GSP2013] 316	G	01 58 24.300	-25 03 22.26			~	1	0
3	[GSP2013] 130	G	01 58 26.310	-25 03 43.08			~	1	0
4	[GSP2013] 1240	AGN	01 58 26.410	-25 01 54.71			~	1	0
5	[GSP2013] 474	G	01 58 27.030	-25 02 47.32			~	1	0
6	[GSP2013] 168	G	01 58 27.190	-25 03 36.90			~	1	0
7	[GSP2013] 2024	G	01 58 27.600	-25 00 12.73			~	1	0
8	[GSP2013] 451	G	01 58 28.000	-25 03 10.98			~	1	0
9	[GSP2013] 2025	G	01 58 29.360	-25 00 11.47			~	1	0
10	[GSP2013] 741	G	01 58 29.550	-25 02 39.78			~	1	0
11	[GSP2013] 1414	G	01 58 29.690	-25 01 43.90			~	1	0
12	[GSP2013] 3812	G	01 58 29.730	-24 58 34.77			~	1	0
13	[GSP2013] 2376	G	01 58 29.800	-25 00 44.32			~	1	0
14	[GSP2013] 3850	G	01 58 29.800	-24 58 44.71			~	1	0
15	[GSP2013] 4030	G	01 58 30.050	-24 59 04.44			~	1	0
16	[GSP2013] 1011	G	01 58 30.580	-25 02 13.87			~	1	0
17	[GSP2013] 3344	G	01 58 30.590	-24 57 52.92			~	1	0
18	[GSP2013] 1794	G	01 58 30.940	-24 59 50.50			~	1	0
19	[GSP2013] 2225	G	01 58 31.090	-25 00 30.00			~	1	0
20	[GSP2013] 4439	G	01 58 32.090	-24 59 37.91			~	1	0
21	[GSP2013] 1901	G	01 58 32.390	-25 00 00.27			~	1	0
22	[GSP2013] 2358	G	01 58 32.820	-25 00 42.43			~	1	0
23	[GSP2013] 4365	AGN	01 58 33.310	-24 59 34.48			~	1	0
24	MRC 0156-252	rG	01 58 33.480	-24 59 32.01	22.7		~	50	0
25	[GSP2013] 3622	G	01 58 33.540	-24 58 18.21			~	1	0
26	[GSP2013] 3886	G	01 58 33.580	-24 58 53.48			~	1	0
27	[GSP2013] 4228	G	01 58 33.660	-24 59 19.82			~	1	0
28	[GSP2013] 4351	AGN	01 58 33.680	-24 59 30.56			~	1	0
29	[GSP2013] 696	AGN	01 58 34.300	-25 02 46.55			~	1	0
30	[GSP2013] 3803	G	01 58 34.990	-24 58 36.83			~	1	0
31	[GSP2013] 443	G	01 58 35.020	-25 02 49.86			~	1	0
32	[GSP2013] 268	AGN	01 58 35.090	-25 03 17.03			~	1	0
33	[GSP2013] 3875	G	01 58 36.130	-24 58 44.60			~	1	0
34	[GSP2013] 2250	G	01 58 36.780	-25 00 32.39			~	1	0
35	[GSP2013] 3642	G	01 58 38.330	-24 58 17.40			~	1	0
36	[GSP2013] 4280	G	01 58 39.540	-24 59 33.21			~	1	0
37	[GSP2013] 874	QSO	01 58 40.010	-25 02 27.34			~	1	0
38	[GSP2013] 3043	G	01 58 40.180	-25 01 37.14			~	1	0
39	[GSP2013] 1019	G	01 58 40.570	-25 02 14.33			~	1	0
40	[GSP2013] 662	G	01 58 40.620	-25 02 47.57			~	1	0
41	[GSP2013] 3795	G	01 58 41.620	-24 58 38.19			~	1	0
42	[GSP2013] 3890	G	01 58 43.1207072496	-24 58 51.424628124			~	1	0
43	[GSP2013] 3432	G	01 58 45.440	-24 58 03.60			~	1	0
44	[GSP2013] 1663	G	01 58 46.630	-24 57 35.52			~	1	0
45	[GSP2013] 4314	G	01 58 48.710	-24 59 26.14			~	1	0
46	[TFU2010] SXDF XCL J0218-0512	ClG	02 18 28.5	-05 12 00			~	2	0
47	NAME GOODS Southern Field	reg	03 32 28.0	-27 48 30			~	1251	1
48	MRC 1138-262	AGN	11 40 48.3	-26 29 09		22.00	~	272	0
49	NAME MRC 1138-262 Protocluster	PCG	11 40 48.4	-26 29 11			~	33	0
50	IDCS J1426.5+3508	ClG	14 26.5	+35 08			~	51	0
51	ClG J1449+0856	ClG	14 49.0	+08 56			~	55	0
52	HS 1700+6416	QSO	17 01 00.6194059368	+64 12 09.118892376	16.39	16.17	~	367	0
53	NVSS J175705+651953	rG	17 57 05.5	+65 19 54			~	28	2

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