2012ApJ...751...29Y

Query : 2012ApJ...751...29Y

2012ApJ...751...29Y - Astrophys. J., 751, 29 (2012/May-3)

Profiles of Lyα emission lines of the emitters at z = 3.1.

YAMADA T., MATSUDA Y., KOUSAI K., HAYASHINO T., MORIMOTO N. and UMEMURA M.

Abstract (from CDS):

We present the results of the observations of the Lyα line profiles of 91 emission-line galaxies at z = 3.1 with a spectral resolution of λ/δλ(FWHM) ~1700 or 180 km/s. A significant fraction of ∼50% of the observed objects show the characteristic double peaks in their Lyα profile. The red peak is much stronger than the blue one for most of the cases. The red peaks themselves also show weak but significant asymmetry and their widths are correlated with the velocity separation of the red and the blue peaks. This implies that the peaks are not isolated multiple components with different velocities but parts of a single line that are modified by the absorption and/or scattering by the associated neutral hydrogen gas. The characteristic profile can be naturally explained by scattering in the expanding shell of the neutral hydrogen surrounding the Lyα emitting region while the attenuation by the intergalactic medium should also be considered. Our results suggest that the star formation in these Lyα emitters are dominated by young burst-like events that produce the intrinsic Lyα emission as well as the gas outflow.

Abstract Copyright: ∼

Journal keyword(s): galaxies: evolution - galaxies: formation - galaxies: high-redshift - galaxies: kinematics and dynamics - galaxies: star formation

VizieR on-line data: <Available at CDS (J/ApJ/751/29): table1.dat>

Nomenclature: Table 1: [YMK2012] LAE JHHMMSS.s+DDMMSS N=91.

Simbad objects: 97

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Number of rows : 97
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 [YMK2012] LAE J221650.2+002750 EmG 22 16 50.2 +00 27 50           ~ 1 0
2 [YMK2012] LAE J221650.9+002327 EmG 22 16 50.9 +00 23 27           ~ 1 0
3 [YMK2012] LAE J221652.7+002423 EmG 22 16 52.7 +00 24 23           ~ 1 0
4 [YMK2012] LAE J221653.9+002137 EmG 22 16 53.87 +00 21 38.1   25.04 24.85 24.86   ~ 2 0
5 [MYH2004] LAB 34 EmG 22 16 58.40 +00 24 29.2           ~ 7 0
6 [YMK2012] LAE J221659.3+002304 EmG 22 16 59.3 +00 23 04           ~ 1 0
7 [YMK2012] LAE J221659.3+002501 EmG 22 16 59.34 +00 25 00.3   25.77 25.29 25.38   ~ 2 0
8 [YMK2012] LAE J221700.3+002404 EmG 22 17 00.3 +00 24 04           ~ 1 0
9 [YMK2012] LAE J221700.7+002006 EmG 22 17 00.7 +00 20 06           ~ 1 0
10 [YMK2012] LAE J221701.6+002135 EmG 22 17 01.6 +00 21 35           ~ 1 0
11 [YMK2012] LAE J221701.8+002003 EmG 22 17 01.8 +00 20 03           ~ 1 0
12 [YMK2012] LAE J221702.7+002433 EmG 22 17 02.7 +00 24 33           ~ 1 0
13 [YMK2012] LAE J221702.8+002121 EmG 22 17 02.8 +00 21 21           ~ 1 0
14 [YMK2012] LAE J221704.9+002226 EmG 22 17 04.9 +00 22 26           ~ 1 0
15 [YMK2012] LAE J221706.7+002134 EmG 22 17 06.72 +00 21 33.2       24.6   ~ 8 0
16 [MYH2004] LAB 27 EmO 22 17 06.96 +00 21 31.1           ~ 9 0
17 [NEI2016] AGN 86861 AGN 22 17 09.6360 +00 18 00.720   25.265 24.256 24.187   ~ 11 0
18 [YMK2012] LAE J221713.3+002034 EmG 22 17 13.3 +00 20 34           ~ 1 0
19 [YMK2012] LAE J221713.6+000640 EmG 22 17 13.6 +00 06 40           ~ 1 0
20 [YMK2012] LAE J221713.7+001656 EmG 22 17 13.7 +00 16 56           ~ 1 0
21 [YMK2012] LAE J221715.7+001906 EmG 22 17 15.70 +00 19 06.2           ~ 2 0
22 [YMK2012] LAE J221715.8+002431 EmG 22 17 15.8 +00 24 31           ~ 1 0
23 [IKI2011] e EmG 22 17 16.66 +00 23 07.5   25.98 25.65 25.31   ~ 3 0
24 [YMK2012] LAE J221717.3+000728 EmG 22 17 17.3 +00 07 28           ~ 1 0
25 [YMK2012] LAE J221717.5+002010 EmG 22 17 17.5 +00 20 10           ~ 1 0
26 [YMK2012] LAE J221718.8+001518 EmG 22 17 18.77 +00 15 18.1       27.00   ~ 4 0
27 [YMK2012] LAE J221719.0+001200 EmG 22 17 18.96 +00 12 00.8       26.59   ~ 3 0
28 [YMK2012] LAE J221719.3+001450 EmG 22 17 19.25 +00 14 50.9       25.82   ~ 4 0
29 [YMK2012] LAE J221719.7+001149 EmG 22 17 19.68 +00 11 49.4       26.11   ~ 3 0
30 [YMK2012] LAE J221720.1+002226 EmG 22 17 20.1 +00 22 26           ~ 1 0
31 SDSS J221720.24+002019.0 QSO 22 17 20.242 +00 20 19.10   22.244 22.421 22.697   ~ 10 0
32 [YMK2012] LAE J221720.3+002438 EmG 22 17 20.3 +00 24 38           ~ 1 0
33 [YMK2012] LAE J221721.7+001223 EmG 22 17 21.65 +00 12 23.4       26.24   ~ 3 0
34 SAS-LBG SSA22b-D9 EmG 22 17 22.27 +00 08 04.2       25.3   ~ 5 0
35 [YMK2012] LAE J221722.6+002145 EmG 22 17 22.6 +00 21 45           ~ 1 0
36 [YMK2012] LAE J221722.9+001441 EmG 22 17 22.87 +00 14 41.7       26.53   ~ 4 0
37 [YMK2012] LAE J221723.5+002040 EmG 22 17 23.5 +00 20 40           ~ 1 0
38 [MYH2004] LAB 32 EmG 22 17 23.88 +00 21 56.5           ~ 8 0
39 [YMK2012] LAE J221724.6+001557 EmG 22 17 24.56 +00 15 56.8       27.00   ~ 3 0
40 [YMK2012] LAE J221724.7+002227 EmG 22 17 24.7 +00 22 27           ~ 1 0
41 [MYH2004] LAB 35 EmG 22 17 24.79 +00 17 17.4       25.51   ~ 19 0
42 [YMK2012] LAE J221727.2+001622 EmG 22 17 27.18 +00 16 21.7       25.98   ~ 4 0
43 [YMK2012] LAE J221727.3+001046 EmG 22 17 27.3 +00 10 46           ~ 1 0
44 [YMK2012] LAE J221727.8+001737 EmG 22 17 27.78 +00 17 36.9       27.00   ~ 5 0
45 [YMK2012] LAE J221728.3+001212 EmG 22 17 28.29 +00 12 12.3       25.84   ~ 7 0
46 SAS-LBG SSA22a-C16 EmO 22 17 31.96 +00 13 16.1       23.62   ~ 25 0
47 [YMK2012] LAE J221733.9+001215 EmG 22 17 33.85 +00 12 14.9       26.07   ~ 3 0
48 SSA 22 reg 22 17 34.7 +00 15 07           ~ 351 0
49 NAME SMM J221735.84+001558.9 rG 22 17 35.86 +00 15 59.4   27.332 25.881 25.468 24.57 ~ 41 0
50 [YMK2012] LAE J221736.4+001251 EmG 22 17 36.41 +00 12 51.0       27.00   ~ 3 0
51 [YMK2012] LAE J221736.8+002614 EmG 22 17 36.8 +00 26 14           ~ 1 0
52 [YMK2012] LAE J221738.5+002215 EmG 22 17 38.5 +00 22 15           ~ 1 0
53 SAS-LBG SSA22a-C4 EmG 22 17 38.90 +00 11 01.8       24.28   ~ 9 0
54 [IKI2011] b EmG 22 17 39.01 +00 17 26.4   26.01 25.82 25.82   ~ 6 0
55 [YMK2012] LAE J221739.2+002242 EmG 22 17 39.18 +00 22 41.5   28.03 26.93 26.65   ~ 2 0
56 [YMK2012] LAE J221739.3+001610 EmG 22 17 39.29 +00 16 10.5       27.00   ~ 3 0
57 [YMK2012] LAE J221739.9+002142 EmG 22 17 39.9 +00 21 42           ~ 1 0
58 [YMK2012] LAE J221740.3+001129 EmG 22 17 40.29 +00 11 28.0   24.51 24.25 24.12   ~ 2 0
59 [YMK2012] LAE J221740.9+001125 EmG 22 17 40.9 +00 11 25           ~ 1 0
60 [SAD98] SSA 22a C5 G 22 17 40.93 +00 11 26.0           ~ 20 0
61 [YMK2012] LAE J221741.4+002227 EmG 22 17 41.44 +00 22 26.7       24.9   ~ 2 0
62 [YMK2012] LAE J221743.3+002149 EmG 22 17 43.36 +00 21 49.0   25.56 25.11 25.06   ~ 2 0
63 [YMK2012] LAE J221743.4+001348 EmG 22 17 43.4 +00 13 48           ~ 1 0
64 [YMK2012] LAE J221743.7+002451 EmG 22 17 43.7 +00 24 51           ~ 1 0
65 [YMK2012] LAE J221745.3+002006 EmG 22 17 45.3 +00 20 06           ~ 2 0
66 [YMK2012] LAE J221745.6+001544 EmG 22 17 45.6 +00 15 44           ~ 1 0
67 [IKI2011] c EmG 22 17 45.87 +00 23 18.9   25.68 25.89 25.90   ~ 4 0
68 [YMK2012] LAE J221748.6+001334 EmG 22 17 48.7 +00 13 33           ~ 2 0
69 [YMK2012] LAE J221750.5+001310 EmG 22 17 50.5 +00 13 10           ~ 1 0
70 [YMK2012] LAE J221751.0+001858 EmG 22 17 51.0 +00 18 58           ~ 1 0
71 [IKI2011] g EmG 22 17 53.22 +00 12 37.4   26.47 26.08 25.82   ~ 4 0
72 [YMK2012] LAE J221754.3+001224 EmG 22 17 54.3 +00 12 24           ~ 1 0
73 [YMK2012] LAE J221755.1+002500 EmG 22 17 55.1 +00 25 00           ~ 1 0
74 [YMK2012] LAE J221757.6+001204 EmG 22 17 57.6 +00 12 04           ~ 1 0
75 [MYH2004] LAB 28 EmO 22 17 59.0 +00 22 48           ~ 8 0
76 [YMK2012] LAE J221759.2+002254 EmG 22 17 59.2 +00 22 54           ~ 1 0
77 [YMK2012] LAE J221759.3+001148 EmG 22 17 59.3 +00 11 48           ~ 1 0
78 [MYH2004] LAB 10 EmG 22 18 02.27 +00 25 56.9           ~ 11 0
79 [YMK2012] LAE J221803.6+002247 EmG 22 18 03.6 +00 22 47           ~ 1 0
80 [YMK2012] LAE J221805.9+002407 EmG 22 18 05.9 +00 24 07           ~ 1 0
81 [YMK2012] LAE J221808.0+001151 EmG 22 18 07.96 +00 11 50.5   26.55 26.02 26.30   ~ 3 0
82 [MYH2004] LAB 23 EmG 22 18 08.00 +00 23 15.5           ~ 7 0
83 [MYH2004] LAB 15 EmG 22 18 08.40 +00 10 22.5           ~ 9 0
84 [YMK2012] LAE J221809.2+001242 EmG 22 18 09.2 +00 12 42           ~ 1 0
85 [YMK2012] LAE J221809.4+001358 EmG 22 18 09.4 +00 13 58           ~ 1 0
86 [YMK2012] LAE J221811.0+002508 EmG 22 18 11.0 +00 25 08           ~ 1 0
87 [MYH2004] LAB 33 EmG 22 18 12.56 +00 14 33.3           ~ 8 0
88 [YMK2012] LAE J221813.2+002157 EmG 22 18 13.2 +00 21 57           ~ 1 0
89 [YMK2012] LAE J221813.8+000925 EmG 22 18 13.8 +00 09 25           ~ 1 0
90 [YMK2012] LAE J221813.9+002222 EmG 22 18 13.90 +00 22 22.1   26.09 26.18 26.32   ~ 3 0
91 [YMK2012] LAE J221816.0+001412 EmG 22 18 16.0 +00 14 12           ~ 1 0
92 [MYH2004] LAB 21 EmO 22 18 17.0 +00 12 04           ~ 8 0
93 [YMK2012] LAE J221817.3+001209 EmG 22 18 17.3 +00 12 09           ~ 1 0
94 [YMK2012] LAE J221818.2+001143 EmG 22 18 18.2 +00 11 43           ~ 1 0
95 [YMK2012] LAE J221820.8+001241 EmG 22 18 20.19 +00 12 35.6   26.38 26.21 26.60   ~ 2 0
96 [YMK2012] LAE J221820.8+001257 EmG 22 18 20.8 +00 12 57           ~ 1 0
97 [YMK2012] LAE J221820.9+001031 EmG 22 18 20.9 +00 10 31           ~ 1 0

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