2008A&A...485..645B


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.04CEST21:07:13

2008A&A...485..645B - Astronomy and Astrophysics, volume 485, 645-655 (2008/7-3)

Submillimeter observations of the J2142-4423 Lyα protocluster at z = 2.38.

BEELEN A., OMONT A., BAVOUZET N., KOVACS A., LAGACHE G., DE BREUCK C., WEISS A., MENTEN K.M., COLBERT J.W., DOLE H., SIRINGO G. and KREYSA E.

Abstract (from CDS):

We present observations aimed at exploring both the nature of Lyα emitting nebulae (``Lyα blobs'') at z=2.38 and the way they trace large scale structure (LSS), by exploring their proximity to ``maximum starbursts'' through submillimeter emission. Our most important objectives are to make a census of associated submillimeter galaxies (SMGs), check their properties, and look for a possible overdensity in the protocluster J2142-4426 at z=2.38. We used the newly commissioned Large APEX Bolometer Camera (LABoCa) on the Atacama Pathfinder EXperiment (APEX) telescope, in its Science Verification phase, to carry out a deep 10'x10' map at 870µm, and we performed multiple checks of the quality of data processing and source extraction. Our map, the first published deep image, confirms the capabilities of APEX/LABoCa as the most efficient current equipment for wide and deep submm mapping. Twenty-two sources were securely extracted with 870 µm flux densities in the range 3-21mJy, rms noise ∼0.8-2.4mJy, and far-IR luminosities probably in the range ∼5-20x1012L. Only one of the four 50kpc-extended Lyα blobs has a secure 870µm counterpart. The 870µm source counts in the whole area are marginally higher than in the SHADES SCUBA survey, with a possible over-density around this blob. The majority of the 3.6-24µm SEDs of the submillimeter sources indicate they are starburst dominated, with redshifts mostly >2. However, there is evidence of a high-z AGN in ∼30% of the sources.

Abstract Copyright:

Journal keyword(s): galaxies: starburst - galaxies: high-redshift - submillimeter - infrared: galaxies - ultraviolet: galaxies - large-scale structure of Universe

Nomenclature: Table 1, col(1): LABoCa JHHMMSS+DDMMSS N=32, = Table 1, col(2): [BOB2008] LNN (Nos L01-L32).

CDS comments: J2142-4423 (protocluster) is a misprint for J2143-4423 (ClG J2143-4423 in SIMBAD).

Simbad objects: 55

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Number of rows : 55

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 4C 41.17 rG 06 50 52.098 +41 30 30.53           ~ 315 1
2 M 82 IG 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 5331 6
3 NAME SMM J123711+622212 AGN 12 37 11.89 +62 22 12.7   27.2 25.185   24.42 ~ 151 0
4 Mrk 231 Sy1 12 56 14.2340989340 +56 52 25.238555193   14.68 13.84     ~ 1777 3
5 IC 4553 SyG 15 34 57.22396 +23 30 11.6084   14.76 13.88     ~ 2679 4
6 NGC 6090 PaG 16 11 40.3 +52 27 21   14.0       ~ 396 2
7 NGC 6240 Sy2 16 52 58.861 +02 24 03.55   14.31 13.37     ~ 1479 2
8 NAME Superantennae Sy2 19 31 21.4252803168 -72 39 21.448768732   17.39 16.37 14.65   ~ 276 2
9 QSO B1954-388 QSO 19 57 59.81927470 -38 45 06.3557585   18.47 17.07 16.73   ~ 183 1
10 ESO 286-19 LIN 20 58 26.8182983654 -42 38 59.418569678   14.79 14.79 14.20   ~ 248 0
11 [PTF2004] J214206.03-443447.9 G 21 42 06.03 -44 34 47.9           ~ 6 0
12 [BOB2008] L17 smm 21 42 09.520 -44 26 05.32           ~ 1 0
13 [BOB2008] L21 smm 21 42 10.660 -44 25 15.82           ~ 1 0
14 [BOB2008] L19 smm 21 42 16.140 -44 28 52.23           ~ 1 0
15 [BOB2008] L02 smm 21 42 20.980 -44 24 54.22           ~ 1 0
16 [BOB2008] L04 smm 21 42 22.080 -44 28 13.16           ~ 1 0
17 [BOB2008] L26 smm 21 42 26.560 -44 21 49.64           ~ 1 0
18 [PTF2004] J214227.56-442030.1 PaG 21 42 27.51 -44 20 29.5           ~ 16 2
19 [BOB2008] L12 smm 21 42 29.300 -44 22 15.30           ~ 1 0
20 [PTF2004] J214229.73-442102.8 G 21 42 29.69 -44 21 01.4           ~ 7 0
21 [BOB2008] L10 smm 21 42 30.540 -44 28 13.34           ~ 1 0
22 [BOB2008] L31 smm 21 42 31.220 -44 26 42.79           ~ 1 0
23 [BOB2008] L05 smm 21 42 31.440 -44 23 48.46           ~ 1 0
24 [PTF2004] J214232.20-442018.6 G 21 42 32.14 -44 20 17.2           ~ 5 0
25 [BOB2008] L14 smm 21 42 32.300 -44 31 27.24           ~ 1 0
26 [BOB2008] L25 smm 21 42 32.920 -44 20 14.71           ~ 1 0
27 [BOB2008] L18 smm 21 42 34.250 -44 22 08.35           ~ 1 0
28 [PTF2004] J214234.88-442706.2 G 21 42 34.88 -44 27 06.2           ~ 6 0
29 [BOB2008] L06 smm 21 42 35.030 -44 27 11.99           ~ 1 0
30 [BOB2008] L28 smm 21 42 37.380 -44 25 34.77           ~ 1 0
31 [BOB2008] L01 smm 21 42 39.560 -44 28 20.12           ~ 1 0
32 [BOB2008] L16 smm 21 42 40.680 -44 25 17.04           ~ 1 0
33 [BOB2008] L20 smm 21 42 40.860 -44 30 45.31           ~ 1 0
34 [BOB2008] L09 smm 21 42 41.880 -44 30 30.08           ~ 1 0
35 [BOB2008] L32 smm 21 42 43.000 -44 22 10.13           ~ 1 0
36 [BOB2008] L11 smm 21 42 44.760 -44 23 26.40           ~ 1 0
37 [BOB2008] L23 smm 21 42 44.990 -44 26 25.55           ~ 1 0
38 [BOB2008] L03 smm 21 42 48.000 -44 27 30.62           ~ 1 0
39 [BOB2008] L15 smm 21 42 49.340 -44 30 26.70           ~ 1 0
40 [BOB2008] L07 smm 21 42 51.240 -44 30 43.73           ~ 1 0
41 [FPT2004] J214251.50-443043.2 QSO 21 42 51.4889496934 -44 30 43.173088358   20.26       ~ 2 0
42 [BOB2008] L24 smm 21 42 52.750 -44 24 57.77           ~ 1 0
43 [BOB2008] L08 smm 21 42 58.690 -44 25 01.70           ~ 1 0
44 ClG J2143-4423 ClG 21 43 -44.4           ~ 16 0
45 [BOB2008] L13 smm 21 43 02.770 -44 25 05.64           ~ 1 0
46 [PTF2004] J214303.57-442344.2 G 21 43 03.57 -44 23 44.2           ~ 8 0
47 [BOB2008] L29 smm 21 43 04.020 -44 22 00.10           ~ 1 0
48 [FWW96] B8 G 21 43 05.84 -44 27 20.9           ~ 2 0
49 [BOB2008] L22 smm 21 43 09.390 -44 28 25.24           ~ 1 0
50 [BOB2008] L27 smm 21 43 11.440 -44 26 17.39           ~ 1 0
51 [BOB2008] L30 smm 21 43 12.320 -44 27 36.62           ~ 1 0
52 [FWW96] B9 G 21 43 37.33 -44 23 56.2           ~ 2 0
53 NAME SMM J221726+0013 EmO 22 17 25.97 +00 12 38.9   27   24.49   ~ 92 0
54 SSA 22 reg 22 17 34.7 +00 15 07           ~ 261 0
55 NAME South America H2G 22 51 49.307 -17 52 23.96   16.97       ~ 286 3

    Equat.    Gal    SGal    Ecl

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2020.07.04-21:07:13

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