2025ApJ...980..138H

Query : 2025ApJ...980..138H

2025ApJ...980..138H - Astrophys. J., 980, 138 (2025/February-2)

JWST, ALMA, and Keck Spectroscopic Constraints on the UV Luminosity Functions at z ∼ 7-14: Clumpiness and Compactness of the Brightest Galaxies in the Early Universe.

HARIKANE Y., INOUE A.K., ELLIS R.S., OUCHI M., NAKAZATO Y., YOSHIDA N., ONO Y., SUN F., SATO R.A., FERRAMI G., FUJIMOTO S., KASHIKAWA N., McLEOD D.J., PEREZ-GONZALEZ P.G., SAWICKI M., SUGAHARA Y., XU Y., YAMANAKA S., CARNALL A.C., CULLEN F., DUNLOP J.S., EGAMI E., GROGIN N., ISOBE Y., KOEKEMOER A.M., LAPORTE N., LEE C.-H., MAGEE D., MATSUO H., MATSUOKA Y., MAWATARI K., NAKAJIMA K., NAKANE M., TAMURA Y., UMEDA H. and YANAGISAWA H.

Abstract (from CDS):

We present the number densities and physical properties of the bright galaxies spectroscopically confirmed at z ∼ 7-14. Our sample is composed of 60 galaxies at zspec ∼ 7-14, including recently confirmed galaxies at zspec = 12.34-14.18 with JWST, as well as new confirmations at zspec = 6.583-7.643 with -24 < MUV < -21 mag using ALMA and Keck. Our JWST/NIRSpec observations have also revealed that very bright galaxy candidates at z ∼ 10-13 identified from ground-based telescope images before JWST are passive galaxies at z ∼ 3-4, emphasizing the necessity of strict screening and spectroscopy in the selection of the brightest galaxies at z > 10. The UV luminosity functions derived from these spectroscopic results are consistent with a double power-law function, showing tensions with theoretical models at the bright end. To understand the origin of the overabundance of bright galaxies, we investigate their morphologies using JWST/NIRCam high-resolution images obtained in various surveys, including PRIMER and COSMOS-Web. We find that ∼70% of the bright galaxies at z ∼ 7 exhibit clumpy morphologies with multiple subcomponents, suggesting merger-induced starburst activity, which is consistent with SED fitting results showing bursty star formation histories. At z ≳ 10, bright galaxies are classified into two types of galaxies: extended ones with weak high-ionization emission lines, and compact ones with strong high-ionization lines including N IV]λ1486, indicating that at least two different processes (e.g., merger-induced starburst and compact star formation/AGN) are shaping the physical properties of the brightest galaxies at z ≳ 10 and are responsible for their overabundance.

Abstract Copyright: © 2025. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Galaxy formation - Galaxy evolution - High-redshift galaxies

Status at CDS : Tables of objects will be appraised for possible ingestion in SIMBAD.

Simbad objects: 68

goto Full paper

goto View the references in ADS

Number of rows : 68
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 UNCOVER DR2 55950 G 00 13 48.328 -30 19 14.58           ~ 6 0
2 UNCOVER DR2 55541 G 00 13 48.339 -30 19 18.51           ~ 6 0
3 UNCOVER DR2 57149 G 00 13 49.129 -30 19 00.83           ~ 5 0
4 UNCOVER DR2 45758 G 00 13 54.897 -30 20 43.93           ~ 26 0
5 [CFT2022] GHZ2 G 00 13 59.760 -30 19 29.07           ~ 91 0
6 UNCOVER DR2 46843 G 00 14 01.75 -30 20 35.6           ~ 3 0
7 UNCOVER DR2 30818 G 00 14 02.860 -30 22 18.62           ~ 32 0
8 UNCOVER DR2 42485 G 00 14 03.298 -30 21 05.59           ~ 10 0
9 ACO 2744 ClG 00 14 20.03 -30 23 17.8           ~ 1077 0
10 [MPC2023] GLASS 10021 LeG 00 14 26.04 -30 25 06.7           ~ 8 0
11 [HIM2022] HD3 G? 02 16 54.48 -05 09 37.1           ~ 3 0
12 CANDELS UDS F160W J021715.24-050745.6 G 02 17 15.2462 -05 07 45.657           ~ 11 0
13 NAME Himiko EmG 02 17 57.6122 -05 08 44.898           ~ 113 0
14 REBELS-06 G 02 18 47.47 -05 10 20.3           ~ 6 0
15 [HIM2022] HD2 G? 02 18 52.44 -05 08 36.1           ~ 7 0
16 REBELS-07 G 02 18 56.536 -05 19 58.92           ~ 44 0
17 REBELS-08 G 02 19 35.140 -05 23 19.31           ~ 13 0
18 REBELS-12 G 02 25 07.94 -05 06 40.7           ~ 21 0
19 REBELS-14 G 02 26 46.190 -04 59 53.57           ~ 17 0
20 [BJD2020] XMM3-3085 G 02 26 59.080 -05 12 17.49           ~ 3 0
21 REBELS-15 G 02 27 13.120 -04 17 59.25           ~ 10 0
22 HSCS J023536-031737 G 02 35 36.580 -03 17 37.67           ~ 3 0
23 JADES-GS NC 18044 EmG 03 32 17.8244 -27 53 09.316           ~ 18 0
24 JADES-GS+053.08294-27.85563 EmG 03 32 19.905 -27 51 20.28           ~ 50 0
25 NAME GOODS Southern Field reg 03 32 28.0 -27 48 30           ~ 1623 1
26 NAME Hubble Ultra Deep Field reg 03 32 39.0 -27 47 29           ~ 1900 0
27 HSCS J084916+005311 G 08 49 16.59 +00 53 11.0           ~ 1 0
28 HSCS J091519-012630 G 09 15 19.55 -01 26 30.5           ~ 1 0
29 COSMOS2015 516548 G 09 57 37.000 +02 05 11.32           ~ 8 0
30 COSMOS2015 689079 G 09 57 47.90 +02 20 43.7           ~ 21 0
31 REBELS-19 G 09 57 54.690 +02 27 54.90           ~ 13 0
32 COSMOS2015 776817 G 09 58 46.200 +02 28 45.76           ~ 13 0
33 COSMOS2015 245166 G 09 58 58.270 +01 39 20.19           ~ 13 0
34 [ESC2021b] COS-1009842 G 09 59 06.330 +02 26 30.48           ~ 4 0
35 COSMOS2015 623787 EmG 09 59 21.680 +02 14 53.02           ~ 10 0
36 COSMOS2015 720471 G 09 59 23.620 +02 23 32.73           ~ 5 0
37 HSCS J100004+015835 G 10 00 04.360 +01 58 35.53           ~ 11 0
38 NAME COS-zs7-1 EmG 10 00 23.77 +02 20 37.0           ~ 40 0
39 NAME COSMOS Field reg 10 00 28.60 +02 12 21.0           ~ 3639 0
40 REBELS-P6 G 10 00 29.870 +02 13 02.47           ~ 33 0
41 REBELS-P7 G 10 00 29.89 +01 46 46.4           ~ 10 0
42 CANDELS COSMOS F160W J100030.18+021559.7 G 10 00 30.19 +02 15 59.8           ~ 53 0
43 REBELS-25 G 10 00 32.322 +01 44 31.26           ~ 39 0
44 COSMOS2015 481451 G 10 00 42.130 +02 01 56.87           ~ 12 0
45 COSMOS2015 877552 G 10 00 43.38 +02 37 51.8           ~ 19 0
46 CANDELS COSMOS F160W J100047.33+022843.1 EmG 10 00 47.333 +02 28 43.14           ~ 21 0
47 COSMOS2015 338645 EmG 10 00 58.01148 +01 48 15.3000           ~ 101 0
48 REBELS-27 G 10 00 58.485 +01 49 55.96           ~ 18 0
49 COSMOS2015 888219 G 10 01 04.60 +02 38 56.7           ~ 6 0
50 COSMOS2015 876803 G 10 01 36.86 +02 37 49.3           ~ 25 0
51 COSMOS2015 408255 G 10 01 40.70 +01 54 52.5           ~ 71 0
52 [HIM2022] HD1 G? 10 01 51.31 +02 32 50.0           ~ 20 0
53 COSMOS2015 743699 G 10 01 52.31 +02 25 42.3           ~ 17 0
54 REBELS-32 G 10 01 59.060 +01 53 27.75           ~ 15 0
55 COSMOS2015 607293 G 10 02 06.49 +02 13 24.1           ~ 16 0
56 COSMOS2020 Classic 1151531 G 10 02 12.558 +02 30 45.71           ~ 15 0
57 COSMOS2015 905144 EmG 10 02 15.50 +02 40 33.4           ~ 5 0
58 REBELS-37 G 10 02 31.810 +02 31 17.10           ~ 8 0
59 NAME COLA1 EmG 10 02 35.380 +02 12 13.96           ~ 37 0
60 COSMOS2015 923550 G 10 02 54.040 +02 42 11.94           ~ 18 0
61 [HWI2021] LAE-7 EmG 10 03 05.20 +02 09 14.7           ~ 2 0
62 HSCS J100305+021842 G 10 03 05.250 +02 18 42.75           ~ 21 0
63 NAME GOODS-N Field reg 12 36 55.0 +62 14 15           ~ 1364 1
64 NAME EGS-zs8-2 EmG 14 20 12.08 +53 00 26.9           ~ 29 0
65 [ADF2023] CEERS MSA 1142 EmG 14 20 14.579 +52 57 31.56           ~ 5 0
66 CANDELS EGS F160W J142019.3+525935.7 G 14 20 19.287 +52 59 35.67           ~ 4 0
67 CANDELS EGS F160W J142019.5+525819.9 EmG 14 20 19.556 +52 58 19.98           ~ 19 0
68 CANDELS EGS F160W J142045.2+530201.1 EmG 14 20 45.23 +53 02 01.3           ~ 18 0

To bookmark this query, right click on this link: simbad:objects in 2025ApJ...980..138H and select 'bookmark this link' or equivalent in the popup menu