2021ApJ...911...78O

Query : 2021ApJ...911...78O

2021ApJ...911...78O - Astrophys. J., 911, 78-78 (2021/April-3)

SILVERRUSH X: machine learning-aided selection of 9318 LAEs at z = 2.2, 3.3, 4.9, 5.7, 6.6, and 7.0 from the HSC SSP and CHORUS survey data.

ONO Y., ITOH R., SHIBUYA T., OUCHI M., HARIKANE Y., YAMANAKA S., INOUE A.K., AMAGASA T., MIURA D., OKURA M., SHIMASAKU K., IWATA I., TANIGUCHI Y., FUJIMOTO S., IYE M., JAELANI A.T., KASHIKAWA N., KIKUCHIHARA S., KIKUTA S., KOBAYASHI M.A.R., KUSAKABE H., LEE C.-H., LIANG Y., MATSUOKA Y., MOMOSE R., NAGAO T., NAKAJIMA K. and TADAKI K.-I.

Abstract (from CDS):

We present a new catalog of 9318 Lyα emitter (LAE) candidates at z = 2.2, 3.3, 4.9, 5.7, 6.6, and 7.0 that are photometrically selected by the SILVERRUSH program with a machine learning technique from large area (up to 25.0 deg2) imaging data with six narrowband filters taken by the Subaru Strategic Program with Hyper Suprime-Cam and a Subaru intensive program, Cosmic HydrOgen Reionization Unveiled with Subaru. We construct a convolutional neural network that distinguishes between real LAEs and contaminants with a completeness of 94% and a contamination rate of 1%, enabling us to efficiently remove contaminants from the photometrically selected LAE candidates. We confirm that our LAE catalogs include 177 LAEs that have been spectroscopically identified in our SILVERRUSH programs and previous studies, ensuring the validity of our machine learning selection. In addition, we find that the object-matching rates between our LAE catalogs and our previous results are ≃80%-100% at bright NB magnitudes of <=24 mag. We also confirm that the surface number densities of our LAE candidates are consistent with previous results. Our LAE catalogs will be made public on our project webpage.

Abstract Copyright: © 2021. The American Astronomical Society. All rights reserved.

Journal keyword(s): Convolutional neural networks - Lyman-alpha galaxies - High-redshift galaxies - Galaxy evolution - Galaxy formation

VizieR on-line data: <Available at CDS (J/ApJ/911/78): tablea1.dat>

Simbad objects: 181

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Number of rows : 181
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 HSCS J021525-045918 EmG 02 15 25.26 -04 59 18.3           ~ 4 0
2 HSCS J021526-045229 EmG 02 15 26.220 -04 52 29.93           ~ 3 0
3 HSCS J021533-050137 EmG 02 15 33.240 -05 01 37.38           ~ 2 0
4 HSCS J021551-045325 EmG 02 15 51.340 -04 53 25.44           ~ 4 0
5 HSCS J021555-045318 EmG 02 15 55.66 -04 53 19.0           ~ 3 0
6 HSCS J021558-045301 EmG 02 15 58.490 -04 53 01.75           ~ 4 0
7 HSCS J021611-045633 EmG 02 16 11.39 -04 56 33.4           ~ 2 0
8 HSCS J021617-045419 EmG 02 16 17.16 -04 54 19.5           ~ 3 0
9 HSCS J021624-045516 EmG 02 16 24.72 -04 55 16.7           ~ 8 0
10 HSCS J021625-045237 EmG 02 16 25.640 -04 52 37.18           ~ 3 0
11 HSCS J021628-050103 EmG 02 16 28.050 -05 01 03.85           ~ 5 0
12 HSCS J021636-044723 EmG 02 16 36.440 -04 47 23.68           ~ 4 0
13 HSCS J021654-045556 EmG 02 16 54.5645 -04 55 56.788           ~ 6 0
14 HSCS J021654-052155 EmG 02 16 54.600 -05 21 55.52           ~ 7 0
15 HSCS J021657-052117 EmG 02 16 57.89 -05 21 17.1           ~ 6 0
16 HSCS J021702-050604 EmG 02 17 02.5772 -05 06 04.480           ~ 6 0
17 HSCS J021703-045619 EmG 02 17 03.4908 -04 56 19.158           ~ 5 0
18 HSCS J021704-052714 EmG 02 17 04.30 -05 27 14.4           ~ 7 0
19 HSCS J021707-053426 EmG 02 17 07.87 -05 34 26.8           ~ 6 0
20 HSCS J021709-050329 EmG 02 17 09.770 -05 03 29.18           ~ 4 0
21 HSCS J021709-052646 EmG 02 17 09.950 -05 26 46.53           ~ 4 0
22 HSCS J021719-043150 EmG 02 17 19.130 -04 31 50.64           ~ 4 0
23 HSCS J021724-053309 EmG 02 17 24.04 -05 33 09.7           ~ 8 0
24 CANDELS UDS F160W J021725.90-050737.6 EmG 02 17 25.900 -05 07 37.59           ~ 5 0
25 HSCS J021726-045126 EmG 02 17 26.740 -04 51 26.79           ~ 2 0
26 HSCS J021729-053028 EmG 02 17 29.180 -05 30 28.50           ~ 3 0
27 HSCS J021734-053452 EmG 02 17 34.17 -05 34 52.9           ~ 5 0
28 HSCS J021734-044558 EmG 02 17 34.58 -04 45 59.1           ~ 6 0
29 HSCS J021736-052701 EmG 02 17 36.39 -05 27 01.8           ~ 6 0
30 HSCS J021736-053027 EmG 02 17 36.680 -05 30 27.57           ~ 3 0
31 HSCS J021737-043943 EmG 02 17 37.960 -04 39 43.02           ~ 4 0
32 HSCS J021739-043837 EmG 02 17 39.250 -04 38 37.21           ~ 5 0
33 HSCS J021742-052810 EmG 02 17 42.170 -05 28 10.55           ~ 4 0
34 HSCS J021743-052807 EmG 02 17 43.353 -05 28 07.08           ~ 5 0
35 HSCS J021745-052842 EmG 02 17 45.033 -05 28 42.47           ~ 9 0
36 HSCS J021745-052936 EmG 02 17 45.270 -05 29 36.10           ~ 14 0
37 HSCS J021745-044129 EmG 02 17 45.740 -04 41 29.24           ~ 4 0
38 HSCS J021748-053127 EmG 02 17 48.477 -05 31 27.02           ~ 10 0
39 HSCS J021749-052854 EmG 02 17 49.132 -05 28 54.18           ~ 11 0
40 HSCS J021749-052708 EmG 02 17 50.005 -05 27 08.19           ~ 10 0
41 HSCS J021750-050203 EmG 02 17 50.860 -05 02 03.24           ~ 2 0
42 HSCS J021751-053003 EmG 02 17 51.154 -05 30 03.62           ~ 7 0
43 HSCS J021752-053511 EmG 02 17 52.65 -05 35 11.8           ~ 6 0
44 HSCS J021755-043251 EmG 02 17 55.400 -04 32 51.54           ~ 4 0
45 NAME Himiko EmG 02 17 57.6122 -05 08 44.898           ~ 113 0
46 HSCS J021757-053309 EmG 02 17 57.67 -05 33 09.5           ~ 5 0
47 HSCS J021758-043030 EmG 02 17 58.92 -04 30 30.5           ~ 5 0
48 HSCS J021800-053518 EmG 02 18 00.700 -05 35 18.92           ~ 4 0
49 HSCS J021802-052011 EmG 02 18 02.19 -05 20 11.5           ~ 5 0
50 HSCS J021803-052643 EmG 02 18 03.870 -05 26 43.45           ~ 7 0
51 HSCS J021804-052147 EmG 02 18 04.170 -05 21 47.25           ~ 7 0
52 HSCS J021805-052704 EmG 02 18 05.170 -05 27 04.06           ~ 7 0
53 HSCS J021805-052027 EmG 02 18 05.280 -05 20 26.90           ~ 7 0
54 HSCS J021806-042847 EmG 02 18 06.18 -04 28 47.5           ~ 3 0
55 HSCS J021806-044510 EmG 02 18 06.23 -04 45 10.8           ~ 3 0
56 HSCS J021810-053707 EmG 02 18 10.69 -05 37 07.8           ~ 4 0
57 HSCS J021814-053249 EmG 02 18 14.434 -05 32 49.12           ~ 6 0
58 HSCS J021819-050355 EmG 02 18 19.59 -05 03 55.6           ~ 3 0
59 HSCS J021820-051109 EmG 02 18 20.6670 -05 11 09.664           ~ 6 0
60 HSCS J021822-042926 EmG 02 18 22.910 -04 29 25.89           ~ 3 0
61 HSCS J021823-043524 EmG 02 18 23.5317 -04 35 24.193           ~ 5 0
62 HSCS J021825-050700 EmG 02 18 25.430 -05 07 00.63           ~ 2 0
63 HSCS J021827-050727 EmG 02 18 27.010 -05 07 26.98           ~ 2 0
64 HSCS J021827-043507 EmG 02 18 27.0289 -04 35 08.216           ~ 9 0
65 HSCS J021827-044737 EmG 02 18 27.45 -04 47 37.2           ~ 6 0
66 HSCS J021828-051423 EmG 02 18 28.870 -05 14 23.01           ~ 5 0
67 HSCS J021830-051457 EmG 02 18 30.530 -05 14 57.81           ~ 5 0
68 HSCS J021830-052950 EmG 02 18 30.750 -05 29 50.34           ~ 2 0
69 HSCS J021835-042321 EmG 02 18 35.940 -04 23 21.62           ~ 7 0
70 HSCS J021836-053528 EmG 02 18 36.370 -05 35 28.07           ~ 3 0
71 HSCS J021842-043011 EmG 02 18 42.590 -04 30 11.40           ~ 2 0
72 HSCS J021843-050915 EmG 02 18 43.620 -05 09 15.63           ~ 6 0
73 HSCS J021844-043636 EmG 02 18 44.6534 -04 36 36.501           ~ 5 0
74 HSCS J021845-052915 EmG 02 18 45.030 -05 29 15.91           ~ 2 0
75 HSCS J021846-043722 EmG 02 18 46.660 -04 37 22.48           ~ 2 0
76 HSCS J021848-051715 EmG 02 18 48.230 -05 17 15.45           ~ 4 0
77 HSCS J021849-052235 EmG 02 18 49.000 -05 22 35.35           ~ 3 0
78 HSCS J021850-053007 EmG 02 18 50.990 -05 30 07.79           ~ 2 0
79 HSCS J021857-045648 EmG 02 18 57.320 -04 56 48.88           ~ 5 0
80 HSCS J021859-052916 EmG 02 18 59.920 -05 29 16.81           ~ 4 0
81 HSCS J021901-045859 EmG 02 19 01.44 -04 58 59.0           ~ 4 0
82 HSCS J021911-045707 EmG 02 19 11.030 -04 57 07.48           ~ 5 0
83 HSCS J021933-050820 EmG 02 19 33.14 -05 08 20.8           ~ 3 0
84 HSCS J021943-044914 EmG 02 19 43.910 -04 49 14.30           ~ 4 0
85 HSCS J022001-045839 EmG 02 20 01.08 -04 58 39.9           ~ 3 0
86 HSCS J022001-051637 EmG 02 20 01.100 -05 16 37.51           ~ 4 0
87 HSCS J022003-045416 EmG 02 20 03.200 -04 54 16.58           ~ 2 0
88 HSCS J022012-044950 EmG 02 20 12.145 -04 49 50.69           ~ 4 0
89 HSCS J022013-045109 EmG 02 20 13.330 -04 51 09.40           ~ 2 0
90 HSCS J022026-050542 EmG 02 20 26.83 -05 05 42.6           ~ 3 0
91 HSCS J022026-045217 EmG 02 20 26.90 -04 52 18.0           ~ 3 0
92 SDSS J022028.95-045802.8 QSO 02 20 28.9563636792 -04 58 02.798673924           ~ 10 0
93 SDSS J022120.92-032353.4 QSO 02 21 20.925 -03 23 53.43           ~ 9 0
94 SDSS J022121.14-034338.1 QSO 02 21 21.149 -03 43 38.14           ~ 10 0
95 SDSS J022202.58-050352.0 QSO 02 22 02.586 -05 03 52.07           ~ 10 0
96 SDSS J022219.95-052231.6 QSO 02 22 19.9544548800 -05 22 31.556806680           ~ 19 0
97 SDSS J022230.42-033545.3 QSO 02 22 30.421 -03 35 45.30   22.06       ~ 10 0
98 SDSS J022312.45-050625.1 QSO 02 23 12.4580812464 -05 06 25.071421428   20.90   19.4   ~ 20 0
99 SDSS J022349.42-033930.6 QSO 02 23 49.4279121864 -03 39 30.622741596   21.28   20.51   ~ 13 0
100 SDSS J022351.06-044730.0 QSO 02 23 51.0729091296 -04 47 30.077537388   20.33   20.065   ~ 16 0
101 NAME GOODS Southern Field reg 03 32 28.0 -27 48 30           ~ 1623 1
102 SDSS J095508.45+011205.6 QSO 09 55 08.458 +01 12 05.63           ~ 8 0
103 SDSS J095539.50+011316.2 QSO 09 55 39.506 +01 13 16.27           ~ 8 0
104 [VV2006] J095714.0+013145 QSO 09 57 14.0123 +01 31 45.520   20.63 20.58     ~ 16 0
105 [VV2006] J095821.9+010806 QSO 09 58 22.0310877792 +01 08 06.335327040   20.85       ~ 18 0
106 HSCS J095919+020321 EmG 09 59 19.750 +02 03 22.10           ~ 9 0
107 HSCS J095922+021029 EmG 09 59 22.270 +02 10 29.28           ~ 2 0
108 COSMOS2015 788192 EmG 09 59 29.34 +02 29 50.3           ~ 9 0
109 HSCS J095930+021642 G 09 59 30.070 +02 16 42.70           ~ 2 0
110 SDSS J095930.20+024124.8 QSO 09 59 30.204 +02 41 24.83   21.6099 21.2693   21.060 ~ 38 0
111 HSCS J095933+024955 EmG 09 59 33.420 +02 49 56.00           ~ 6 0
112 COSMOS2015 470116 EmG 09 59 44.060 +02 00 50.70           ~ 14 0
113 COSMOS2015 770216 EmG 09 59 45.97 +02 28 08.0 24.90 24.91 25.00 24.77 24.65 ~ 6 0
114 HSCS J095946+014353 EmG 09 59 46.130 +01 43 53.50           ~ 5 0
115 COSMOS2015 357722 EmG 09 59 52.020 +01 50 05.80           ~ 10 0
116 COSMOS2015 224751 EmG 09 59 52.130 +01 37 23.20           ~ 14 0
117 COSMOS2015 536534 EmG 09 59 53.250 +02 07 05.60     27.16 27.87 25.65 ~ 45 0
118 COSMOS2015 752761 EmG 09 59 54.390 +02 26 29.96 24.74 24.97 24.38 24.27 23.91 ~ 12 0
119 COSMOS2015 628137 EmG 09 59 54.530 +02 15 16.60           ~ 16 0
120 COSMOS2015 576372 EmG 09 59 54.790 +02 10 39.40           ~ 16 0
121 COSMOS2015 328419 EmG 09 59 55.010 +01 47 20.40           ~ 10 0
122 COSMOS2015 555120 EmG 10 00 04.17 +02 08 45.8   28.250 27.324     ~ 9 0
123 HSCS J100005+020717 EmG 10 00 05.040 +02 07 17.10           ~ 9 0
124 COSMOS2015 472215 EmG 10 00 19.970 +02 01 03.40           ~ 12 0
125 NAME COSMOS Field reg 10 00 28.60 +02 12 21.0           ~ 3639 0
126 HSCS J100029+024115 EmG 10 00 29.120 +02 41 15.80           ~ 7 0
127 HSCS J100029+015000 EmG 10 00 29.580 +01 50 00.60           ~ 7 0
128 CANDELS COSMOS F160W J100030.41+021714.8 EmG 10 00 30.400 +02 17 14.80           ~ 17 0
129 COSMOS2015 214169 EmG 10 00 30.43 +01 36 21.6           ~ 8 0
130 HSCS J100034+013616 EmG 10 00 34.620 +01 36 16.10           ~ 5 0
131 HSCS J100040+021903 EmG 10 00 40.220 +02 19 03.90           ~ 11 0
132 CANDELS COSMOS F160W J100041.07+022637.3 EmG 10 00 41.08 +02 26 37.4           ~ 12 0
133 CANDELS COSMOS F160W J100042.19+022019.6 G 10 00 42.1838 +02 20 19.629           ~ 5 0
134 COSMOS2015 604211 EmG 10 00 55.43 +02 13 09.2           ~ 9 0
135 HSCS J100055+013630 EmG 10 00 55.520 +01 36 30.80           ~ 6 0
136 [ICS2009] 1657280 QSO 10 00 57.792 +02 39 32.48   23.569 22.688   22.49 ~ 30 0
137 COSMOS2015 338645 EmG 10 00 58.01148 +01 48 15.3000           ~ 101 0
138 HSCS J100058+013642 EmG 10 00 58.410 +01 36 42.80           ~ 8 0
139 HSCS J100102+015144 EmG 10 01 02.940 +01 51 44.70           ~ 9 0
140 HSCS J100107+015222 EmG 10 01 07.370 +01 52 22.80           ~ 11 0
141 COSMOS2015 627591 EmG 10 01 09.720 +02 15 13.70           ~ 10 0
142 COSMOS2015 773957 EmG 10 01 10.060 +02 28 29.20           ~ 15 0
143 HSCS J100122+022249 EmG 10 01 22.44 +02 22 49.9           ~ 6 0
144 COSMOS2015 420065 EmG 10 01 23.830 +01 56 00.20           ~ 15 0
145 COSMOS2015 809358 EmG 10 01 24.80 +02 31 45.4           ~ 19 0
146 COSMOS2015 298678 EmG 10 01 26.900 +01 44 30.10           ~ 12 0
147 COSMOS2015 790930 EmG 10 01 27.770 +02 30 06.10           ~ 12 0
148 COSMOS2015 351640 EmG 10 01 29.080 +01 49 29.90           ~ 17 0
149 HSCS J100131+023105 EmG 10 01 31.070 +02 31 06.00           ~ 8 0
150 HSCS J100131+014320 EmG 10 01 31.110 +01 43 20.40           ~ 7 0
151 COSMOS2015 432995 EmG 10 01 45.13 +01 57 12.3     27.545     ~ 7 0
152 COSMOS2015 490061 AGN 10 01 45.98 +02 02 44.3     27.270 25.80 24.10 ~ 5 0
153 HSCS J100146+014827 EmG 10 01 46.640 +01 48 27.07           ~ 2 0
154 HSCS J100153+020459 EmG 10 01 53.46 +02 04 59.9           ~ 9 0
155 COSMOS2015 532837 EmG 10 02 06.00 +02 06 46.2           ~ 9 0
156 HSCS J100207+023217 EmG 10 02 07.810 +02 32 17.18           ~ 2 0
157 COSMOS2015 406956 EmG 10 02 08.800 +01 54 45.20           ~ 10 0
158 COSMOS2015 599188 EmG 10 02 14.210 +02 12 42.92           ~ 2 0
159 COSMOS2015 905144 EmG 10 02 15.50 +02 40 33.4           ~ 5 0
160 NAME COLA1 EmG 10 02 35.380 +02 12 13.96           ~ 37 0
161 COSMOS2015 488399 EmG 10 03 01.150 +02 02 36.10         26.35 ~ 23 0
162 HSCS J100301+015011 EmG 10 03 01.820 +01 50 11.40           ~ 5 0
163 HSCS J100305+015141 EmG 10 03 05.330 +01 51 41.00           ~ 7 0
164 HSCS J100306+014742 EmG 10 03 06.140 +01 47 43.10           ~ 8 0
165 HSCS J100334+024546 EmG 10 03 34.660 +02 45 46.56           ~ 3 0
166 NAME GOODS-N Field reg 12 36 55.0 +62 14 15           ~ 1364 1
167 HSCS J160107+550720 EmG 16 01 07.450 +55 07 20.63           ~ 4 0
168 HSCS J160707+555347 EmG 16 07 07.480 +55 53 47.90           ~ 3 0
169 HSCS J160940+541409 EmG 16 09 40.250 +54 14 09.04           ~ 3 0
170 HSCS J162126+545719 EmG 16 21 26.510 +54 57 19.14           ~ 5 0
171 SSA 22 reg 22 17 34.7 +00 15 07           ~ 351 0
172 HSCS J232459-001451 AGN 23 24 59.710 -00 14 51.21           ~ 1 0
173 SDSS J232506.72-012203.2 QSO 23 25 06.730 -01 22 03.30           ~ 3 0
174 HSCS J232558-002557 G 23 25 58.440 -00 25 57.56           ~ 1 0
175 HSCS J232619-000152 AGN 23 26 19.350 -00 01 52.72           ~ 1 0
176 SDSS J232855.77-004212.2 QSO 23 28 55.7815932432 -00 42 12.228368256   20.34 20.12     ~ 23 0
177 HSCS J233125-005216 EmG 23 31 25.360 -00 52 16.36           ~ 3 0
178 HSCS J233159-000856 AGN 23 31 59.690 -00 08 56.47           ~ 1 0
179 SDSS J233217.04-011416.9 QSO 23 32 17.0436365976 -01 14 16.873368000           ~ 9 0
180 HSCS J233408-004403 G 23 34 08.800 -00 44 03.69           ~ 1 0
181 HSCS J233454-003603 G 23 34 54.950 -00 36 03.97           ~ 1 0

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