2014A&A...570A..55D


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.03CEST22:43:59

2014A&A...570A..55D - Astronomy and Astrophysics, volume 570A, 55-55 (2014/10-1)

An excess of dusty starbursts related to the Spiderweb galaxy.

DANNERBAUER H., KURK J.D., DE BREUCK C., WYLEZALEK D., SANTOS J.S., KOYAMA Y., SEYMOUR N., TANAKA M., HATCH N., ALTIERI B., COIA D., GALAMETZ A., KODAMA T., MILEY G., ROETTGERING H., SANCHEZ-PORTAL M., VALTCHANOV I., VENEMANS B. and ZIEGLER B.

Abstract (from CDS):

We present APEX LABOCA 870µm observations of the field around the high-redshift radio galaxy MRC1138-262 at z=2.16. We detect 16 submillimeter galaxies (SMGs) in this ∼140-arcmin2 bolometer map with flux densities in the range 3-11mJy. The raw number counts indicate a density of SMGs that is up to four times that of blank field surveys. Based on an exquisite multiwavelength database, including VLA 1.4 GHz radio and infrared observations, we investigate whether these sources are members of the protocluster structure at z≃2.2. Using Herschel PACS and SPIRE and Spitzer MIPS photometry, we derive reliable far-infrared (FIR) photometric redshifts for all sources. Follow-up VLT ISAAC and SINFONI NIR spectra confirm that four of these SMGs have redshifts of z≃2.2. We also present evidence that another SMG in this field, detected earlier at 850µm, has a counterpart that exhibits Hα and CO(1-0) emission at z=2.15. Including the radio galaxy and two SMGs with FIR photometric redshifts at z=2.2, we conclude that at least eight submm sources are part of the protocluster at z=2.16 associated with the radio galaxy MRC1138-262. We measure a star formation rate density SFRD∼1500M/yr/Mpc3, four magnitudes higher than the global SFRD of blank fields at this redshift. Strikingly, these eight sources are concentrated within a region of 2Mpc (the typical size of clusters in the local universe) and are distributed within the filaments traced by the HAEs at z≃2.2. This concentration of massive, dusty starbursts is not centered on the submillimeter-bright radio galaxy which could support the infalling of these sources into the cluster center. Approximately half (6/11) of the SMGs that are covered by the Hα imaging data are associated with HAEs, demonstrating the potential of tracing SMG counterparts with this population. To summarize, our results demonstrate that submillimeter observations may enable us to study (proto)clusters of massive, dusty starbursts.

Abstract Copyright:

Journal keyword(s): galaxies: individual: MRC1138-262 - galaxies: clusters: individual: MRC1138-262 - galaxies: high-redshift - cosmology: observations - infrared: galaxies - submillimeter: galaxies

VizieR on-line data: <Available at CDS (J/A+A/570/A55): list.dat fits/*>

Nomenclature: Table 1 col(1): DKB SMM JHHMMSS.s+DDMMSS N=16 = Figs 2+6, Table 1 col(2): DKB NN (Nos 01-16). Figs 2+6: DKB NNa (Nos 01a-01b, 08a-08b, 12a-12d).

Simbad objects: 39

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Number of rows : 39

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 ClG J0218-0510 ClG 02 18 21.3 -05 10 27           ~ 62 0
2 NAME Extended Chandra Deep Field South reg 03 32 30.0 -27 48 20           ~ 613 0
3 4C 41.17 rG 06 50 52.098 +41 30 30.53           ~ 315 1
4 DKB 08b G 11 40 33.29 -26 31 22.0           ~ 1 0
5 DKB 08a G 11 40 34.16 -26 31 21.0           ~ 1 0
6 DKB SMM J114038.5-263201 G 11 40 38.48 -26 32 01.4           ~ 1 0
7 DKB SMM J114040.9-262555 G 11 40 40.92 -26 25 56.0           ~ 1 0
8 DKB SMM J114042.4-262715 G 11 40 42.35 -26 27 13.7           ~ 1 0
9 DKB SMM J114043.7-262216 G 11 40 43.66 -26 22 16.8           ~ 1 0
10 DKB SMM J114043.9-262340 G 11 40 43.88 -26 23 40.2           ~ 1 0
11 [KPR2004] HA 229 EmO 11 40 46.1 -26 29 12           ~ 9 0
12 DKB SMM J114046.8-262539 G 11 40 46.23 -26 25 39.3           ~ 1 0
13 DKB SMM J114048.3-262748 G 11 40 47.89 -26 27 48.0           ~ 1 0
14 NAME Spiderweb Galaxy AGN 11 40 48.3 -26 29 09     22.00     ~ 249 1
15 DKB SMM J114048.4-262914 G 11 40 48.36 -26 29 14.4           ~ 1 0
16 NAME MRC 1138-262 Protocluster ClG 11 40 48.4 -26 29 11           ~ 22 0
17 CXOU J114052.8-262911 Sy1 11 40 52.8 -26 29 11           ~ 6 1
18 DKB SMM J114053.3-262913 G 11 40 53.23 -26 29 11.7           ~ 1 0
19 [KPR2004] LyA 877 EmO 11 40 54.0 -26 28 01   25.3       ~ 2 0
20 DKB 15 G 11 40 54.75 -26 28 03.4         25.44 ~ 2 0
21 DKB 12d G 11 40 57.38 -26 29 37.0           ~ 1 0
22 DKB 12c G 11 40 57.64 -26 29 35.0           ~ 1 0
23 DKB 12b G 11 40 57.79 -26 29 35.0           ~ 1 0
24 DKB SMM J114058.3-263044 G 11 40 57.81 -26 30 48.1           ~ 1 0
25 DKB 12a G 11 40 57.91 -26 29 36.0           ~ 1 0
26 [PKC2002] 13 X 11 40 59.24 -26 32 03.2           ~ 2 0
27 2MASX J11405948-2631561 G 11 40 59.4521180211 -26 31 55.757016224   14.7       ~ 9 0
28 DKB 01b G 11 40 59.62 -26 30 39.0           ~ 1 0
29 [PKC2002] 15 X 11 40 59.70 -26 32 07.5           ~ 2 0
30 DKB 01a G 11 40 59.82 -26 30 42.0           ~ 1 0
31 DKB 16 AGN 11 41 02.38 -26 27 45.1   24.1 22.90     ~ 6 0
32 NAME Hubble Deep Field reg 12 36 49.5 +62 12 58           ~ 1825 1
33 NAME GOODS-N Field reg 12 36 55.0 +62 14 15           ~ 914 1
34 Mrk 231 Sy1 12 56 14.2340989340 +56 52 25.238555193   14.68 13.84     ~ 1777 3
35 ACO 1656 ClG 12 59 48.7 +27 58 50           ~ 4208 2
36 SSA 13 reg 13 12 16.5 +42 44 39           ~ 102 0
37 3C 286 Sy1 13 31 08.2885060664 +30 30 32.960825108   17.51 17.25     ~ 3715 1
38 [DBC2004] M03 rG 13 38 26.05 -19 42 30.5       22.4   ~ 88 0
39 ClG J2143-4423 ClG 21 43 -44.4           ~ 16 0

    Equat.    Gal    SGal    Ecl

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2020.07.03-22:43:59

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