2017ApJ...850..178A


Query : 2017ApJ...850..178A

2017ApJ...850..178A - Astrophys. J., 850, 178-178 (2017/December-1)

Deep submillimeter and radio observations in the SSA22 field. I. Powering sources and the Lyα escape fraction of Lyα blobs.

AO Y., MATSUDA Y., HENKEL C., IONO D., ALEXANDER D.M., CHAPMAN S.C., GEACH J., HATSUKADE B., HAYES M., HINE N.K., KATO Y., KAWABE R., KOHNO K., KUBO M., LEHNERT M., MALKAN M., MENTEN K.M., NAGAO T., NORRIS R.P., OUCHI M., SAITO T., TAMURA Y., TANIGUCHI Y., UMEHATA H. and WEISS A.

Abstract (from CDS):

We study the heating mechanisms and Lyα escape fractions of 35 Lyα blobs (LABs) at z ≃ 3.1 in the SSA22 field. Dust continuum sources have been identified in 11 of the 35 LABs, all with star formation rates (SFRs) above 100 M yr–1. Likely radio counterparts are detected in 9 out of 29 investigated LABs. The detection of submillimeter dust emission is more linked to the physical size of the Lyα emission than to the Lyα luminosities of the LABs. A radio excess in the submillimeter/radio-detected LABs is common, hinting at the presence of active galactic nuclei. Most radio sources without X-ray counterparts are located at the centers of the LABs. However, all X-ray counterparts avoid the central regions. This may be explained by absorption due to exceptionally large column densities along the line-of-sight or by LAB morphologies, which are highly orientation dependent. The median Lyα escape fraction is about 3% among the submillimeter-detected LABs, which is lower than a lower limit of 11% for the submillimeter-undetected LABs. We suspect that the large difference is due to the high dust attenuation supported by the large SFRs, the dense large-scale environment as well as large uncertainties in the extinction corrections required to apply when interpreting optical data.

Abstract Copyright: © 2017. The American Astronomical Society. All rights reserved.

Journal keyword(s): galaxies: active - galaxies: formation - galaxies: high-redshift - galaxies: ISM - infrared: galaxies - infrared: galaxies

Nomenclature: Table 2, col(1): [AMH2017] ALMA-LABNNa (Nos 1-2, 5, 12, 14, 18, 18a-18d). Table 2, col(8): [AMH2017] VLA-LABNNa (Nos 1a-1b, 2-3, 4a-4b, 5, 9a-9b, 11, 14, 16, 18a-18b, 18d, 30a-30d).

Simbad objects: 45

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Number of rows : 45
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 M 82 IG 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 5502 6
2 IC 4553 SyG 15 34 57.22396 +23 30 11.6084   14.76 13.88     ~ 2774 4
3 ClG J2143-4423 ClG 21 43 -44.4           ~ 17 0
4 [MII2017] LAE02 EmG 22 16 51.39 +00 25 03.6   24.77 24.13 23.65   ~ 10 0
5 [MYH2004] LAB 29 EmO 22 16 53.90 +00 23 00.9           ~ 6 0
6 [MYH2004] LAB 34 EmG 22 16 58.40 +00 24 29.2           ~ 7 0
7 [MYH2004] LAB 27 EmO 22 17 06.96 +00 21 31.1           ~ 9 0
8 [AMH2017] ALMA-LAB5 EmO 22 17 11.66 +00 16 44.4           ~ 12 0
9 [MYH2004] LAB 19 EmO 22 17 19.58 +00 18 46.5           ~ 9 0
10 SAS-LBG SSA22a-C47 EmO 22 17 20.33 +00 17 32.1       23.78   ~ 15 0
11 [MYH2004] LAB 25 EmO 22 17 22.59 +00 15 50.8           ~ 11 0
12 [MYH2004] LAB 32 EmG 22 17 23.88 +00 21 56.5           ~ 8 0
13 [MYH2004] LAB 35 EmG 22 17 24.79 +00 17 17.4       25.51   ~ 19 0
14 [AMH2017] VLA-LAB16 EmG 22 17 24.80 +00 11 16.8       27.00   ~ 17 0
15 [AMH2017] VLA-LAB4a EmO 22 17 25.12 +00 22 11.2           ~ 8 0
16 NAME SMM J221726+0013 EmO 22 17 25.97 +00 12 38.9   27   24.49   ~ 99 0
17 [AMH2017] VLA-LAB1a G 22 17 26.01 +00 12 36.5           ~ 3 0
18 [AMH2017] VLA-LAB1b PoG 22 17 26.10 +00 12 32.3       24.58   ~ 11 0
19 SAS-LBG SSA22a-C15 EmO 22 17 26.12 +00 12 55.3       25.02   ~ 25 0
20 [AMH2017] ALMA-LAB18d smm 22 17 28.781 +00 07 40.07           ~ 1 0
21 [AMH2017] ALMA-LAB18b smm 22 17 28.936 +00 07 46.92           ~ 1 0
22 [MYH2004] LAB 18 EmO 22 17 29.01 +00 07 50.2           ~ 15 0
23 [AMH2017] ALMA-LAB18c smm 22 17 29.017 +00 07 43.44           ~ 1 0
24 [AMH2017] ALMA-LAB18a smm 22 17 29.032 +00 07 50.26           ~ 1 0
25 SAS-LBG SSA22a-M28 EmG 22 17 31.69 +00 16 57.6       24.75   ~ 22 0
26 SAS-LBG SSA22a-C16 EmO 22 17 31.96 +00 13 16.1       23.62   ~ 24 0
27 SAS-LBG SSA22a-D3 EmG 22 17 32.40 +00 11 34.1       23.92   ~ 36 0
28 SSA 22 reg 22 17 34.7 +00 15 07           ~ 289 0
29 [MYH2004] LAB 22 EmO 22 17 35.00 +00 23 34.4           ~ 7 0
30 SAS-LBG SSA22a-C12 EmO 22 17 35.30 +00 12 49.0       24.22   ~ 16 0
31 NAME SMM J221735.84+001558.9 AGN 22 17 35.86 +00 15 59.4   27.332 25.881 25.468 24.57 ~ 37 0
32 CXOU J221739.1+001331 AGN 22 17 39.0840 +00 13 29.784   25.999 24.878 25.086   ~ 58 1
33 [SAD98] SSA 22a C5 G 22 17 40.93 +00 11 26.0           ~ 20 0
34 [MYH2004] LAB 26 EmO 22 17 50.43 +00 17 33.4           ~ 8 0
35 [AMH2017] VLA-LAB9a EmO 22 17 51.09 +00 17 26.2           ~ 9 0
36 [MYH2004] LAB 28 EmO 22 17 59.0 +00 22 48           ~ 8 0
37 [AMH2017] VLA-LAB3 EmO 22 17 59.14 +00 15 28.7           ~ 14 0
38 [MYH2004] LAB 24 EmO 22 18 00.90 +00 14 40.0           ~ 8 0
39 [MYH2004] LAB 10 EmG 22 18 02.27 +00 25 56.9           ~ 11 0
40 [MYH2004] LAB 13 EmO 22 18 08.0 +00 16 41           ~ 7 0
41 [MYH2004] LAB 23 EmG 22 18 08.00 +00 23 15.5           ~ 7 0
42 [MYH2004] LAB 15 EmG 22 18 08.40 +00 10 22.5           ~ 9 0
43 [MYH2004] LAB 33 EmG 22 18 12.56 +00 14 33.3           ~ 8 0
44 [MYH2004] LAB 21 EmO 22 18 17.0 +00 12 04           ~ 8 0
45 [MYH2004] LAB 17 EmO 22 18 36.0 +00 07 16           ~ 6 0

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2021.10.28-06:15:23

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