2006ApJ...640..574Z

Query : 2006ApJ...640..574Z

2006ApJ...640..574Z - Astrophys. J., 640, 574-578 (2006/April-1)

An overdensity of galaxies near the most distant radio-loud quasar.

ZHENG W., OVERZIER R.A., BOUWENS R.J., WHITE R.L., FORD H.C., BENITEZ N., BLAKESLEE J.P., BRADLEY L.D., JEE M.J., MARTEL A.R., MEI S., ZIRM A.W., ILLINGWORTH G.D., CLAMPIN M., HARTIG G.F., ARDILA D.R., BARTKO F., BROADHURST T.J., BROWN R.A., BURROWS C.J., CHENG E.S., CROSS N.J.G., DEMARCO R., FELDMAN P.D., FRANX M., GOLIMOWSKI D.A., GOTO T., GRONWALL C., HOLDEN B., HOMEIER N., INFANTE L., KIMBLE R.A., KRIST J.E., LESSER M.P., MENANTEAU F., MEURER G.R., MILEY G.K., MOTTA V., POSTMAN M., ROSATI P., SIRIANNI M., SPARKS W.B., TRAN H.D. and TSVETANOV Z.I.

Abstract (from CDS):

A 5 arcmin2 region around the luminous radio-loud quasar SDSS J0836+0054 (z=5.8) hosts a wealth of associated galaxies, characterized by very red (1.3<i775-z850<2.0) color. The surface density of these z∼5.8 candidates is approximately 6 times higher than the number expected from deep ACS fields. This is one of the highest galaxy overdensities at high redshifts, which may develop into a group or cluster. We also find evidence for a substructure associated with one of the candidates. It has two very faint companion objects within 2", which are likely to merge. The finding supports the results of a recent simulation, which finds that luminous quasars at high redshifts lie on the most prominent dark matter filaments and are surrounded by many fainter galaxies. The quasar activity from these regions may signal the buildup of a massive system.

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Journal keyword(s): Galaxies: High-Redshift - Cosmology: Large-Scale Structure of Universe - quasars: individual (SDSS J0836+0054)

Nomenclature: Table 1, Figs 1, 4: [ZOB2006] AN (Nos A-G, C1-C2).

Simbad objects: 13

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Number of rows : 13
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 [ZOB2006] F G 08 36 42.666 +00 54 44.00           ~ 5 0
2 SDSS J083643.85+005453.3 QSO 08 36 43.8598536120 +00 54 53.233681320   26.19 24.17     ~ 170 0
3 [ZOB2006] E G 08 36 44.029 +00 54 32.79           ~ 4 0
4 [ZOB2006] A G 08 36 45.240 +00 54 11.20           ~ 5 0
5 [ZOB2006] G G 08 36 45.962 +00 55 40.53           ~ 4 0
6 [ZOB2006] B G 08 36 47.040 +00 53 56.36           ~ 5 0
7 [ZOB2006] D Cl* 08 36 48.211 +00 54 41.19           ~ 4 0
8 [ZOB2006] C3 G 08 36 50.010 +00 55 30.27           ~ 3 0
9 [ZOB2006] C2 G 08 36 50.058 +00 55 30.54           ~ 3 0
10 [ZOB2006] C G 08 36 50.099 +00 55 31.16           ~ 4 0
11 GLEAM J092419-220140 QSO 09 24 19.92000 -22 01 41.4984       25.850   ~ 90 1
12 SDSS J103027.09+052455.0 QSO 10 30 27.092 +05 24 55.02   26.15 25.44     ~ 303 0
13 [DBC2004] M03 rG 13 38 26.05 -19 42 30.5       22.4   ~ 106 0

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