2024ApJ...975...53Y

Query : 2024ApJ...975...53Y

2024ApJ...975...53Y - Astrophys. J., 975, 53 (2024/November-1)

Merging Signatures in an Offset Lyman Continuum Emitter at Redshift 3.8.

YUAN F.-T., ZHENG Z.-Y., JIANG C., ZHU S., LIN R. and CHENG C.

Abstract (from CDS):

Lyman continuum (LyC) emitters at z > 3 provide critical samples for studying the contribution of galaxies to the ionizing background in the epoch of reionization. We collect a sample of z > 3 LyC emitters, a dominant fraction (∼60%-70%) of which show spatial offsets between LyC emission and the nonionizing continuum. From this sample, especially, we find a case of an offset LyC emitter, CDFS-6664 (z = 3.797), which shows two components in the high-resolution Hubble Space Telescope and James Webb Space Telescope images. The exceptionally rich data set of CDFS-6664 enables us to extract the two components across multiple wavelengths and estimate their physical properties. We show that CDFS-6664 is consistent with a major merger system with boosted star formation in both components and that the offset LyC emission is most likely associated with the bluer and younger component in this merging system. Our result offers an example in which the offset can be caused by a merger. Future observations of more offset LyC emitters would elucidate the role that mergers play in the escape of LyC photons.

Abstract Copyright: © 2024. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Reionization - Galaxy properties

Simbad objects: 75

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Number of rows : 75
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 SDSS J012156.09+002520.3 QSO 01 21 56.094 +00 25 20.31           ~ 17 0
2 CANDELS GDS F160W J033203.24-274518.8 EmG 03 32 03.243 -27 45 18.82   25.210 24.39 24.610   ~ 44 0
3 VANDELS CDFS 009692 EmG 03 32 06.4416 -27 49 15.480           ~ 11 0
4 GOODS-MUSIC 12730 G 03 32 09.596 -27 45 14.67   26.46 25.09 24.5482 24.209 ~ 10 0
5 VANDELS CDFS 020745 EmG 03 32 11.02 -27 44 00.9           ~ 13 0
6 VANDELS CDFS 005161 EmG 03 32 13.09 -27 51 46.4           ~ 12 0
7 CANDELS GDS F160W J033216.63-274253.3 EmG 03 32 16.63558 -27 42 53.3790   25.032   23.578 24.8136 ~ 31 0
8 CANDELS GDS F160W J033223.84-275021.1 EmG 03 32 23.8449 -27 50 21.144           ~ 14 0
9 NAME Chandra Deep Field-South reg 03 32 28.0 -27 48 30           ~ 2282 1
10 GOODS J033229.94-274928.7 EmG 03 32 29.930 -27 49 28.28   24.652   23.880   ~ 12 0
11 LEGO-GOODS-S 8 EmG 03 32 30.795 -27 47 19.15 28.7760 28.3021 27.62     ~ 14 0
12 MUSE-WIDE 122032127 EmG 03 32 31.8192 -27 50 14.648           ~ 11 0
13 JADES-GS NC 333678 EmG 03 32 32.588 -27 47 43.70   27.7083       ~ 10 0
14 CANDELS GDS F160W J033233.32-275007.3 EmG 03 32 33.3263 -27 50 07.365   27.2922   24.80 24.7890 ~ 30 0
15 JADES-GS NS 54612 EmG 03 32 34.718 -27 46 16.00   26.0326 25.1281     ~ 19 0
16 GOODS-MUSIC 17447 EmG 03 32 34.974 -27 41 13.11   26.94 25.75     ~ 11 0
17 MUSE-WIDE 603452147 EmG 03 32 36.981 -27 47 55.64   29.2265 27.59     ~ 13 0
18 GOODS J033238.50-274902.6 EmG 03 32 38.494 -27 49 02.49   30.6003 28.04     ~ 11 0
19 GOODS J033240.30-274752.6 rG 03 32 40.296 -27 47 52.63 27.4823 26.0835 25.053 25.042   ~ 34 0
20 UDF 7844 G 03 32 40.742 -27 46 21.00 28.9572 28.3800 27.21     ~ 9 0
21 GOODS-MUSIC 11670 EmG 03 32 40.785 -27 46 06.02   25.6088 24.960 25.33   ~ 34 0
22 MUSE-WIDE 604062373 EmG 03 32 43.024 -27 46 58.42   27.3721       ~ 11 0
23 MUSE-WIDE 604172404 EmG 03 32 44.418 -27 47 02.21 29.0416 28.7492 27.25     ~ 15 0
24 CANDELS GDS F160W J033245.39-275010.5 EmG 03 32 45.39 -27 50 10.5           ~ 15 0
25 VANDELS CDFS 019872 EmG 03 32 47.88 -27 44 29.3           ~ 11 0
26 JADES-GS NC 306088 EmG 03 32 49.00 -27 49 01.9     26.85     ~ 20 0
27 SAS-LBG Q0933-M23 G 09 33 20.650 +28 46 54.80       24.68   ~ 4 0
28 COSMOS2015 637697 EmG 09 58 22.97 +02 16 06.7 27.11 26.941 26.721 25.31 24.72 ~ 6 0
29 COSMOS2015 660853 G 10 00 11.48 +02 18 13.9 26.23 26.260 25.928 25.12 24.31 ~ 5 0
30 VUDS 511227001 G 10 00 14.91943 +02 25 23.0012     25.57     ~ 6 0
31 CANDELS COSMOS F160W J100024.59+021653.5 G 10 00 24.59 +02 16 53.6 27.68 27.040 25.41 24.63 23.79 ~ 9 0
32 COSMOS 1971932 G 10 00 37.19 +02 24 45.7 26.56 25.83 25.29 25.20 24.93 ~ 7 0
33 COSMOS2015 677152 G 10 00 49.97 +02 19 42.6 27.52 26.666 25.826 24.96 24.92 ~ 5 0
34 COSMOS2015 386731 AGN 10 01 36.698 +01 52 44.02   24.743 24.516     ~ 13 0
35 COSMOS2015 456254 EmG 10 01 46.340 +01 59 31.10           ~ 5 0
36 GNS 2923 EmG 12 36 19.4549 +62 15 02.570   25.4869   23.78 24.4361 ~ 15 1
37 [BIO2015] GNDB-7064510207 G 12 37 06.37939 +62 10 20.8786           ~ 6 0
38 SDSS J131629.61+261407.0 QSO 13 16 29.614 +26 14 07.05           ~ 22 0
39 EGSIRAC J141803.85+522906.8 G 14 18 03.84423 +52 29 07.0228       24.46   ~ 6 0
40 SAS-LBG Westphal-M37 G 14 18 26.25460 +52 29 45.3319       24.43   ~ 7 0
41 SAS-LBG Q1422-D42 G 14 24 27.720 +22 53 50.71       25.32   ~ 6 0
42 SAS-LBG Q1422-D68 G 14 24 32.940 +22 58 29.13       24.72   ~ 7 0
43 [MSN2013] MD5 G 15 51 45.211 +19 11 05.13     24.96     ~ 4 0
44 [MSN2013] C25 EmG 15 52 06.069 +19 11 28.37     24.60 24.83   ~ 23 0
45 [MII2017] LBG01 G 22 16 47.19 +00 18 43.5   26.05 24.86 24.79   ~ 3 0
46 [MII2017] LBG02 G 22 17 01.43 +00 27 07.7   25.02 24.44 24.43   ~ 2 0
47 [YMK2012] LAE J221706.7+002134 EmG 22 17 06.72 +00 21 33.2       24.6   ~ 8 0
48 [MII2017] LAE06 EmG 22 17 08.03 +00 19 31.9   25.98 25.68 25.76   ~ 7 0
49 [MII2017] LBG03 G 22 17 08.12 +00 09 57.7   25.43 24.34 24.82   ~ 3 0
50 SAS-LBG SSA22a-D17 G 22 17 18.87 +00 18 16.8       24.29   ~ 13 0
51 [NSS2011] 69 EmG 22 17 18.96 +00 11 12.0       24.62   ~ 3 0
52 [NSS2011] 10 EmG 22 17 20.38 +00 18 04.2       25.77   ~ 3 0
53 [NSS2011] 46 EmG 22 17 21.47 +00 14 54.6       27.00   ~ 4 0
54 SAS-LBG SSA22b-oD8 G 22 17 23.56 +00 03 57.1   24.68 23.88 23.58   ~ 5 0
55 [NSS2011] 39 EmG 22 17 24.08 +00 11 31.7       26.48   ~ 3 0
56 [NSS2011] 41 EmG 22 17 24.54 +00 15 06.7       25.97   ~ 3 0
57 [NSS2011] 48 EmG 22 17 27.37 +00 16 51.5       26.73   ~ 3 0
58 [NSS2011] 81 EmG 22 17 29.22 +00 14 48.7       27.00   ~ 3 0
59 [NSS2011] 28 EmG 22 17 31.80 +00 17 17.9       25.50   ~ 4 0
60 SAS-LBG SSA22a-C16 EmO 22 17 31.96 +00 13 16.1       23.62   ~ 25 0
61 SAS-LBG SSA22a-M2 G 22 17 33.50 +00 11 10.8           ~ 4 0
62 [NSS2011] 51 EmG 22 17 33.72 +00 15 04.9       26.26   ~ 3 0
63 SAS-LBG SSA22a-C14 G 22 17 34.03 +00 12 51.3           ~ 3 0
64 [NSS2011] 53 EmG 22 17 34.70 +00 16 33.4       26.53   ~ 4 0
65 [NSS2011] 64 EmG 22 17 35.42 +00 12 14.6       26.05   ~ 3 0
66 [NSS2011] 16 EmG 22 17 35.61 +00 18 00.2       26.24   ~ 4 0
67 [NSS2011] 74 EmG 22 17 36.47 +00 12 54.8       26.16   ~ 3 0
68 SAS-LBG SSA22a-M29 G 22 17 37.40 +00 17 08.8           ~ 3 0
69 [IKI2011] b EmG 22 17 39.01 +00 17 26.4   26.01 25.82 25.82   ~ 6 0
70 [IKI2011] c EmG 22 17 45.87 +00 23 18.9   25.68 25.89 25.90   ~ 4 0
71 [IKI2011] g EmG 22 17 53.22 +00 12 37.4   26.47 26.08 25.82   ~ 4 0
72 [YMK2012] LAE J221808.0+001151 EmG 22 18 07.96 +00 11 50.5   26.55 26.02 26.30   ~ 3 0
73 [YMK2012] LAE J221813.9+002222 EmG 22 18 13.90 +00 22 22.1   26.09 26.18 26.32   ~ 3 0
74 SAS-LBG DSF2237b-MD60 G 22 39 27.930 +11 52 59.60       24.94   ~ 5 0
75 SAS-LBG DSF2237b-MD38 G 22 39 35.490 +11 50 27.53       24.19   ~ 5 0

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