2009ApJ...701..915T

Query : 2009ApJ...701..915T

2009ApJ...701..915T - Astrophys. J., 701, 915-944 (2009/August-3)

Hubble space Telescope/Advanced camera for surveys morphology of Lyα emitters at redshift 5.7 in the COSMOS field.

TANIGUCHI Y., MURAYAMA T., SCOVILLE N.Z., SASAKI S.S., NAGAO T., SHIOYA Y., SAITO T., IDEUE Y., NAKAJIMA A., MATSUOKA K., SANDERS D.B., MOBASHER B., AUSSEL H., CAPAK P., SALVATO M., KOEKEMOER A., CARILLI C., CIMATTI A., ELLIS R.S., GARILLI B., GIAVALISCO M., ILBERT O., IMPEY C.D., KITZBICHLER M.G., LE FEVRE O., McCRACKEN H.J., SCARLATA C., SCHINNERER E., SMOLCIC V., TRIBIANO S. and TRUMP J.R.

Abstract (from CDS):

We present detailed morphological properties of Lyα emitters (LAEs) at z ~ 5.7 in the COSMOS field based on Hubble Space Telescope Advanced Camera for Surveys (ACS) data. The ACS imaging in the F814W filter covered 85 LAEs of the 119 LAEs identified in the full two square degree field, and 47 LAEs of them are detected in the ACS images. Nearly half of them are spatially extended with a size larger than 0.15 arcsec (∼0.88 kpc at z = 5.7) and up to 0.4 arcsec (∼2.5 kpc at z = 5.7). The others are nearly unresolved compact objects. Two LAEs show double-component structures indicating interaction or merging of building components to form more massive galaxies. By stacking the ACS images of all the detected sources, we obtain a Sersic parameter of n ∼ 0.7 with a half-light radius of 0.13 arcsec (0.76 kpc), suggesting that the majority of ACS detected LAEs have not spheroidal-like but disk-like or irregular light profiles. Comparing ACS F814W magnitudes (I814) with Subaru/Suprime-Cam magnitudes in the NB816, i', and z' bands, we find that the ACS imaging in the F814W band mainly probes UV continuum rather than Lyα line emission. UV continuum sizes tend to be larger for LAEs with larger Lyα emission regions as traced by the NB816 imaging. The nondetection of 38 LAEs in the ACS images is likely due to the fact that their surface brightness is too low both in the UV continuum and Lyα emission. Estimating I814 for the ACS-undetected LAEs from the z' and NB816 magnitudes, we find that 16 of these are probably LAEs with a size larger than 0.15 arcsec in UV continuum. All these results suggest that our LAE sample contains systematically larger LAEs in UV continuum size than those previously studied at z ∼ 6.

Abstract Copyright: ∼

Journal keyword(s): cosmology: observations - early universe - galaxies: evolution - galaxies: formation - galaxies: high-redshift

Nomenclature: Table 3: [MTS2007] NNNa (Nos 60a-60b, 110a-110b) added.

Simbad objects: 127

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Number of rows : 127
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 NAME Chandra Deep Field-South reg 03 32 28.0 -27 48 30           ~ 2282 1
2 JADES-GS NC 204851 AGN 03 32 33.259 -27 47 24.78   30.0432 28.44   27.30 ~ 39 0
3 NAME Hubble Ultra Deep Field reg 03 32 39.0 -27 47 29           ~ 1900 0
4 [MTS2007] 1 EmG 09 57 54.9 +02 12 42           ~ 2 0
5 [MTS2007] 2 EmG 09 58 11.0 +02 45 50           ~ 2 0
6 [MTS2007] 3 EmG 09 58 19.0 +01 31 06           ~ 2 0
7 [MTS2007] 4 EmG 09 58 25.2 +02 26 51           ~ 2 0
8 [MTS2007] 5 EmG 09 58 31.7 +02 20 48           ~ 2 0
9 [HCS2018] J149.6330+01.8222 EmG 09 58 31.93999 +01 49 20.2001           ~ 4 0
10 [MTS2007] 7 EmG 09 58 32.7 +02 19 39           ~ 2 0
11 [MTS2007] 8 EmG 09 58 36.9 +01 32 22           ~ 2 0
12 [MTS2007] 9 EmG 09 58 43.3 +02 42 27           ~ 2 0
13 [MTS2007] 10 EmG 09 58 45.3 +02 55 05           ~ 2 0
14 [MTS2007] 11 EmG 09 58 56.0 +01 28 35           ~ 2 0
15 [MTS2007] 12 EmG 09 58 56.7 +01 33 34           ~ 2 0
16 [MTS2007] 13 EmG 09 58 59.0 +02 45 07           ~ 2 0
17 [MTS2007] 14 EmG 09 58 59.8 +02 45 39           ~ 2 0
18 COSMOS2015 616937 EmG 09 59 00.890 +02 14 16.79           ~ 3 0
19 HSCS J095905+014747 EmG 09 59 05.40 +01 47 47.7           ~ 4 0
20 [MTS2007] 17 EmG 09 59 07.4 +01 31 03           ~ 2 0
21 [MTS2007] 18 EmG 09 59 07.5 +01 29 38           ~ 2 0
22 [MTS2007] 19 EmG 09 59 12.5 +01 49 39           ~ 2 0
23 [MTS2007] 20 EmG 09 59 12.6 +02 13 30           ~ 2 0
24 [MTS2007] 22 EmG 09 59 14.0 +01 32 38           ~ 2 0
25 [MTS2007] 21 EmG 09 59 14.0 +02 38 10           ~ 2 0
26 [MTS2007] 23 EmG 09 59 16.5 +01 43 13           ~ 2 0
27 [MTS2007] 24 EmG 09 59 16.9 +02 46 56           ~ 2 0
28 HSCS J095919+020321 EmG 09 59 19.750 +02 03 22.10           ~ 9 0
29 HSCS J095921+014141 EmG 09 59 21.11 +01 41 41.1           ~ 4 0
30 [MTS2007] 27 EmG 09 59 22.6 +02 45 41           ~ 2 0
31 [MTS2007] 28 EmG 09 59 23.2 +02 45 06           ~ 2 0
32 VUDS 5101288969 EmG 09 59 30.620 +02 19 54.10           ~ 10 0
33 HSCS J095933+024955 EmG 09 59 33.420 +02 49 56.00           ~ 6 0
34 [MTS2007] 31 EmG 09 59 38.6 +01 36 53           ~ 2 0
35 [MTS2007] 32 EmG 09 59 40.7 +01 28 58           ~ 2 0
36 COSMOS2015 209031 EmG 09 59 43.270 +01 35 52.80           ~ 4 0
37 COSMOS2015 470116 EmG 09 59 44.060 +02 00 50.70           ~ 14 0
38 [MTS2007] 35 EmG 09 59 46.140 +02 07 42.90           ~ 4 0
39 COSMOS2015 166586 EmG 09 59 46.72850 +01 32 08.5092           ~ 4 0
40 HSCS J095950+025406 EmG 09 59 50.060 +02 54 06.10           ~ 5 0
41 HSCS J095950+023223 EmG 09 59 51.000 +02 32 22.90           ~ 5 0
42 COSMOS2015 224751 EmG 09 59 52.130 +01 37 23.20           ~ 14 0
43 COSMOS2015 536534 EmG 09 59 53.250 +02 07 05.60     27.16 27.87 25.65 ~ 45 0
44 [MTS2007] 41 EmG 09 59 53.6 +02 49 00           ~ 2 0
45 COSMOS2015 628137 EmG 09 59 54.530 +02 15 16.60           ~ 16 0
46 COSMOS2015 576372 EmG 09 59 54.790 +02 10 39.40           ~ 16 0
47 COSMOS2015 328419 EmG 09 59 55.010 +01 47 20.40           ~ 10 0
48 [HCS2018] J150.0021+01.8278 EmG 10 00 00.510 +01 49 40.10           ~ 6 0
49 [MTS2007] 46 EmG 10 00 15.3 +01 28 59           ~ 2 0
50 COSMOS2015 471063 EmG 10 00 15.670 +02 00 56.20           ~ 11 0
51 [MTS2007] 48 EmG 10 00 17.0 +02 46 11           ~ 2 0
52 COSMOS2015 472215 EmG 10 00 19.970 +02 01 03.40           ~ 12 0
53 COSMOS2015 910650 EmG 10 00 22.500 +02 41 03.40           ~ 13 0
54 [MTS2007] 51 EmG 10 00 24.1 +02 47 24           ~ 2 0
55 [MTS2007] 52 EmG 10 00 24.5 +02 54 59           ~ 2 0
56 [MTS2007] 53 EmG 10 00 26.2 +01 32 40           ~ 2 0
57 NAME COSMOS Field reg 10 00 28.60 +02 12 21.0           ~ 3639 0
58 HSCS J100029+024115 EmG 10 00 29.120 +02 41 15.80           ~ 7 0
59 CANDELS COSMOS F160W J100030.41+021714.8 EmG 10 00 30.400 +02 17 14.80           ~ 17 0
60 [MTS2007] 56 EmG 10 00 32.0 +01 30 02           ~ 2 0
61 [HCS2018] J150.1375+02.2596 EmG 10 00 33.02 +02 15 34.9           ~ 6 0
62 [MTS2007] 58 EmG 10 00 37.6 +02 51 41           ~ 2 0
63 HSCS J100040+021903 EmG 10 00 40.220 +02 19 03.90           ~ 11 0
64 [MTS2007] 60a EmG 10 00 46.0 +01 34 35         26.9 ~ 1 0
65 [MTS2007] 60b EmG 10 00 46.0 +01 34 35         27.3 ~ 1 0
66 COSMOS2015 194207 EmG 10 00 46.050 +01 34 35.70           ~ 5 0
67 [HCS2018] J150.2032+02.2278 EmG 10 00 48.770 +02 13 40.20           ~ 4 0
68 [MTS2007] 62 EmG 10 00 52.0 +02 46 23           ~ 2 0
69 [MTS2007] 63 EmG 10 00 54.1 +01 32 37           ~ 2 0
70 HSCS J100055+013630 EmG 10 00 55.520 +01 36 30.80           ~ 6 0
71 HSCS J100058+013642 EmG 10 00 58.410 +01 36 42.80           ~ 8 0
72 COSMOS2015 180331 EmG 10 00 59.300 +01 33 19.60           ~ 59 0
73 [MTS2007] 67 EmG 10 01 00.5 +02 53 53           ~ 2 0
74 HSCS J100102+015144 EmG 10 01 02.940 +01 51 44.70           ~ 9 0
75 HSCS J100107+015222 EmG 10 01 07.370 +01 52 22.80           ~ 11 0
76 [MTS2007] 70 EmG 10 01 08.4 +01 29 09           ~ 2 0
77 COSMOS2015 627591 EmG 10 01 09.720 +02 15 13.70           ~ 10 0
78 [MTS2007] 72 EmG 10 01 11.4 +02 53 40           ~ 2 0
79 COSMOS2015 430951 EmG 10 01 18.410 +01 57 04.00           ~ 11 0
80 [MTS2007] 74 EmG 10 01 21.6 +02 48 01           ~ 2 0
81 COSMOS2015 420065 EmG 10 01 23.830 +01 56 00.20           ~ 15 0
82 COSMOS2015 298678 EmG 10 01 26.900 +01 44 30.10           ~ 12 0
83 COSMOS2015 790930 EmG 10 01 27.770 +02 30 06.10           ~ 12 0
84 COSMOS2015 351640 EmG 10 01 29.080 +01 49 29.90           ~ 17 0
85 HSCS J100131+023105 EmG 10 01 31.070 +02 31 06.00           ~ 8 0
86 [MTS2007] 80 EmG 10 01 35.5 +02 46 24           ~ 2 0
87 COSMOS2015 336830 EmG 10 01 36.100 +01 48 06.40           ~ 9 0
88 [MTS2007] 83 EmG 10 01 37.9 +02 06 48           ~ 2 0
89 [MTS2007] 82 EmG 10 01 37.9 +02 54 42           ~ 2 0
90 [MTS2007] 84 EmG 10 01 38.2 +02 48 23           ~ 2 0
91 [MTS2007] 85 EmG 10 01 42.6 +02 29 51           ~ 2 0
92 [MTS2007] 86 EmG 10 01 44.1 +02 29 12           ~ 2 0
93 [MTS2007] 87 EmG 10 01 45.4 +02 47 10           ~ 2 0
94 [MTS2007] 88 EmG 10 01 46.7 +01 48 27           ~ 2 0
95 [MTS2007] 89 EmG 10 01 52.4 +02 42 26           ~ 2 0
96 [MTS2007] 90 EmG 10 01 54.4 +01 31 53           ~ 2 0
97 [MTS2007] 91 EmG 10 01 57.4 +01 41 18           ~ 2 0
98 [MTS2007] 92 EmG 10 01 59.6 +02 48 50           ~ 2 0
99 [MTS2007] 93 EmG 10 02 02.7 +02 45 50           ~ 2 0
100 COSMOS2015 214573 EmG 10 02 03.14575 +01 36 23.7708           ~ 4 0
101 COSMOS2015 516911 EmG 10 02 08.69 +02 05 14.6           ~ 3 0
102 COSMOS2015 406956 EmG 10 02 08.800 +01 54 45.20           ~ 10 0
103 [MTS2007] 97 EmG 10 02 13.0 +02 49 23           ~ 2 0
104 COSMOS2015 841719 EmG 10 02 16.250 +02 34 38.56           ~ 4 0
105 [MTS2007] 99 EmG 10 02 17.1 +02 21 45           ~ 2 0
106 [MTS2007] 100 EmG 10 02 18.6 +01 36 55           ~ 2 0
107 [MTS2007] 101 EmG 10 02 25.9 +02 29 37           ~ 2 0
108 [MTS2007] 102 EmG 10 02 33.3 +02 23 44           ~ 2 0
109 [MTS2007] 103 EmG 10 02 38.3 +02 38 43           ~ 2 0
110 [MTS2007] 104 EmG 10 02 43.3 +02 45 51           ~ 2 0
111 [MTS2007] 105 EmG 10 02 46.2 +01 52 16           ~ 2 0
112 [MTS2007] 106 EmG 10 02 48.8 +02 44 23           ~ 2 0
113 [MTS2007] 107 EmG 10 02 50.7 +02 13 29           ~ 2 0
114 [MTS2007] 108 EmG 10 02 51.6 +02 14 03           ~ 2 0
115 [MTS2007] 109 EmG 10 02 59.4 +02 51 12           ~ 2 0
116 [MTS2007] 110b EmG 10 03 01.0 +02 02 36         27.1 ~ 1 0
117 [MTS2007] 110a EmG 10 03 01.0 +02 02 36         26.5 ~ 1 0
118 COSMOS2015 488399 EmG 10 03 01.150 +02 02 36.10         26.35 ~ 23 0
119 HSCS J100301+015011 EmG 10 03 01.820 +01 50 11.40           ~ 5 0
120 HSCS J100305+015141 EmG 10 03 05.330 +01 51 41.00           ~ 7 0
121 [MTS2007] 113 EmG 10 03 05.9 +02 09 52           ~ 2 0
122 HSCS J100306+014742 EmG 10 03 06.140 +01 47 43.10           ~ 8 0
123 [MTS2007] 115 EmG 10 03 08.7 +02 38 41           ~ 2 0
124 [MTS2007] 116 EmG 10 03 09.7 +02 13 20           ~ 2 0
125 [MTS2007] 117 EmG 10 03 13.300 +02 55 30.00           ~ 3 0
126 [MTS2007] 118 EmG 10 03 17.1 +02 14 59           ~ 2 0
127 [MTS2007] 119 EmG 10 03 20.2 +02 20 23           ~ 2 0

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