2014ApJ...783..119W

Query : 2014ApJ...783..119W

2014ApJ...783..119W - Astrophys. J., 783, 119 (2014/March-2)

z ∼ 1 Lyα emitters. I. The luminosity function.

WOLD I.G.B., BARGER A.J. and COWIE L.L.

Abstract (from CDS):

We construct a flux-limited sample of 135 candidate z ∼ 1 Lyα emitters (LAEs) from Galaxy Evolution Explorer (GALEX) grism data using a new data cube search method. These LAEs have luminosities comparable to those at high redshifts and lie within a 7 Gyr gap present in existing LAE samples. We use archival and newly obtained optical spectra to verify the UV redshifts of these LAEs. We use the combination of the GALEX UV spectra, optical spectra, and X-ray imaging data to estimate the active galactic nucleus (AGN) fraction and its dependence on Lyα luminosity. We remove the AGNs and compute the luminosity function (LF) from 60 z ∼ 1 LAE galaxies. We find that the best-fit LF implies a luminosity density increase by a factor of ∼1.5 from z ∼ 0.3 to z ∼ 1 and ∼20 from z ∼ 1 to z ∼ 2. We find a z ∼ 1 volumetric Lyα escape fraction of 0.7%±0.4%.

Abstract Copyright: ∼

Journal keyword(s): cosmology: observations - galaxies: active - galaxies: distances and redshifts - galaxies: evolution - galaxies: starburst

VizieR on-line data: <Available at CDS (J/ApJ/783/119): table2.dat table3.dat table4.dat table5.dat>

Simbad objects: 137

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Number of rows : 137
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 GALEX J033042.9-274215 EmG 03 30 42.9626 -27 42 15.325           ~ 1 0
2 GALEX J033044.8-280237 EmG 03 30 44.850 -28 02 37.50           ~ 2 0
3 GALEX J033045.5-274506 EmG 03 30 45.539 -27 45 06.70           ~ 2 0
4 GALEX J033057.5-273316 EmG 03 30 57.530 -27 33 16.50           ~ 2 0
5 GALEX J033100.2-273020 EmG 03 31 00.2846 -27 30 20.394           ~ 1 0
6 ATCDFS J033111.07-281725.9 rG 03 31 11.07 -28 17 25.9           ~ 3 0
7 GALEX J033111.6-275506 EmG 03 31 11.63 -27 55 06.3           ~ 5 0
8 GALEX J033112.0-281517 EmG 03 31 12.090 -28 15 17.90           ~ 2 0
9 GALEX J033112.7-281442 AGN 03 31 12.7428 -28 14 42.389           ~ 1 0
10 GALEX J033113.8-274949 EmG 03 31 13.821 -27 49 49.00           ~ 2 0
11 GALEX J033121.0-274916 EmG 03 31 20.957 -27 49 18.13       21.88   ~ 4 0
12 GALEX J033124.4-275625 EmG 03 31 24.400 -27 56 25.71           ~ 2 0
13 CXOECDFS J033131.2-273429 Sy2 03 31 31.28 -27 34 29.8   23.46 23.48 22.99   ~ 15 0
14 GALEX J033146.1-274846 EmG 03 31 46.190 -27 48 46.10           ~ 2 0
15 GALEX J033146.2-272942 EmG 03 31 46.200 -27 29 42.90           ~ 2 0
16 2XMM J033150.9-274116 QSO 03 31 50.95 -27 41 16.0 23.19 22.570 22.67 22.256   ~ 25 0
17 CXOCDFS J033200.4-274320 Sy1 03 32 00.37 -27 43 20.0 22.76 22.7055 22.335 22.1283 22.2135 ~ 57 0
18 GALEX J033202.5-280320 QSO 03 32 02.559 -28 03 20.92       22.80   ~ 14 0
19 2XMM J033204.0-273726 Sy1 03 32 04.06 -27 37 25.8   23.92 22.97 23.17 23.23 ~ 29 0
20 GALEX J033206.3-281408 EmG 03 32 06.350 -28 14 08.60           ~ 2 0
21 [SWM2014] GOODS-S 19543 EmG 03 32 12.3870 -27 49 12.579   23.0666 22.78 22.75 22.356 ~ 20 0
22 NAME Chandra Deep Field-South reg 03 32 28.0 -27 48 30           ~ 2282 1
23 GALEX J033229.0-273615 EmG 03 32 28.997 -27 36 14.61           ~ 2 0
24 DES J033230.15-280804.5 AGN 03 32 30.154 -28 08 04.53           ~ 3 0
25 GALEX J033235.7-274059 EmG 03 32 35.730 -27 40 59.50           ~ 2 0
26 GALEX J033246.9-274154 EmG 03 32 46.950 -27 41 54.30           ~ 2 0
27 GALEX J033251.4-280809 EmG 03 32 51.441 -28 08 09.50           ~ 2 0
28 GALEX J033255.5-281320 EmG 03 32 55.571 -28 13 20.90           ~ 2 0
29 GALEX J033301.2-273227 EmG 03 33 01.230 -27 32 27.39           ~ 3 0
30 GALEX J033314.5-274834 EmG 03 33 14.539 -27 48 34.29           ~ 2 0
31 GALEX J033321.9-275031 AGN 03 33 21.9084 -27 50 31.387           ~ 1 0
32 GALEX J033329.5-280127 EmG 03 33 29.594 -28 01 27.18       23.41   ~ 3 0
33 ATCDFS J033331.69-280623.7 rG 03 33 31.70 -28 06 23.7           ~ 3 0
34 [LBA2005] 741 EmG 03 33 35.55 -27 39 34.9 23.00 22.51 21.87 20.90   ~ 11 0
35 CXOECDFS J033336.6-274223 rG 03 33 36.67 -27 42 24.2       23.01   ~ 13 0
36 GALEX J033342.1-274035 EmG 03 33 42.1488 -27 40 35.490           ~ 1 0
37 GALEX J033348.8-280216 EmG 03 33 48.870 -28 02 16.79           ~ 2 0
38 DES J033359.78-275327.2 QSO 03 33 59.78 -27 53 27.3           ~ 4 0
39 GALEX J033405.1-275023 EmG 03 34 05.1101 -27 50 23.975           ~ 1 0
40 GALEX J033409.9-280129 EmG 03 34 09.9084 -28 01 29.723           ~ 2 0
41 GALEX J033413.4-275940 AGN 03 34 13.4033 -27 59 40.794           ~ 1 0
42 2MASS J09591024+0207321 Sy2 09 59 10.3133295984 +02 07 32.243334564 21.59 20.73 20.00   18.496 ~ 50 0
43 ACS-GC 20045172 rG 09 59 16.055 +01 50 48.12   21.785 21.1382   21.131 ~ 30 0
44 COSMOS2015 353248 EmG 09 59 18.66 +01 49 33.1 23.514 23.52 23.22 23.15 22.74 ~ 4 0
45 GALEX J095954.6+021707 EmG 09 59 54.6696 +02 17 07.003           ~ 1 0
46 ACS-GC 20092659 Sy1 10 00 02.2171848888 +02 16 31.911883500   21.267 20.792   20.19 ~ 35 0
47 SDSS J100016.28+015104.6 Sy1 10 00 16.289 +01 51 04.63 21.526 21.508 21.111 21.026 20.826 ~ 39 0
48 SDSS J100017.53+020012.5 AGN 10 00 17.533 +02 00 12.58 22.484 21.9275 21.3263 21.087 20.728 ~ 38 0
49 NAME COSMOS Field reg 10 00 28.60 +02 12 21.0           ~ 3639 0
50 SDSS J100029.68+022129.7 AGN 10 00 29.680 +02 21 29.70 21.718 21.4204 20.9256 21.044 20.468 ~ 46 0
51 GALEX J100031.8+023012 EmG 10 00 31.77 +02 30 11.9 22.963 23.09 22.90 23.00 22.75 ~ 5 0
52 ACS-GC 20090151 Sy2 10 00 49.51 +02 17 08.8         22.563 ~ 25 0
53 SDSS J100113.93+022548.1 AGN 10 01 13.934 +02 25 48.15 21.956 21.6605 20.9295 20.693 20.301 ~ 27 0
54 ACS-GC 20086356 Sy2 10 01 23.9774859264 +02 14 45.919643640   22.629 21.881   21.670 ~ 34 0
55 COSMOS2015 409171 AGN 10 01 33.651 +01 54 51.92 22.001 22.013 21.83 21.823 21.578 ~ 14 0
56 GALEX J100136.6+020653 EmG 10 01 36.6384 +02 06 53.285           ~ 1 0
57 SDSS J100141.33+021031.1 Sy1 10 01 41.340 +02 10 31.32   21.4017 20.726   20.541 ~ 36 0
58 ACS-GC 20140040 rG 10 01 45.46 +02 32 36.6 23.71 23.74 23.24 23.03 22.29 ~ 13 0
59 GALEX J100150.1+020935 AGN 10 01 50.1768 +02 09 35.441           ~ 1 0
60 ACS-GC 20058647 Sy2 10 02 02.561 +02 01 45.14 23.100 22.93 22.30 21.982 21.051 ~ 45 0
61 ACS-GC 20084152 AGN 10 02 07.65 +02 11 20.1   22.1245 21.5938   21.447 ~ 28 0
62 GALEX J141718.5+525520 AGN 14 17 18.5616 +52 55 20.647           ~ 1 0
63 [BPG2011] irac158649 EmG 14 17 22.16899 +52 42 08.2951   21.84   21.17 20.58 ~ 4 0
64 SDSS J141733.68+530404.3 AGN 14 17 33.68263 +53 04 04.3929           ~ 2 0
65 CXOEGS J141737.3+524237 AGN 14 17 37.30535 +52 42 36.6135   21.963   21.91 21.47 ~ 5 0
66 GALEX J141746.7+525645 AGN 14 17 46.7424 +52 56 45.776           ~ 1 0
67 GALEX J141746.8+525258 EmG 14 17 46.8528 +52 52 58.789           ~ 1 0
68 GALEX J141800.8+522513 EmG 14 18 00.68610 +52 25 11.2541   22.94   22.88 22.56 ~ 3 0
69 GALEX J141814.5+524415 EmG 14 18 14.5800 +52 44 15.112           ~ 1 0
70 SDSS J141815.44+530452.7 QSO 14 18 15.443 +53 04 52.74           ~ 10 0
71 GALEX J141824.9+522329 AGN 14 18 24.945 +52 23 30.71   24.638 23.993 22.98 22.112 ~ 7 0
72 GALEX J141833.8+525525 EmG 14 18 33.8568 +52 55 25.460           ~ 1 0
73 ACS-GC 12020074 AGN 14 18 42.094 +52 37 33.54   22.77   22.12 21.42 ~ 4 0
74 SDSS J141842.13+522253.5 EmG 14 18 42.152 +52 22 53.70           ~ 2 0
75 GALEX J141842.4+530140 EmG 14 18 42.4728 +53 01 40.102           ~ 1 0
76 [LNG2009] egs-0613 AGN 14 18 42.881 +52 29 18.52   22.34   22.03 21.44 ~ 4 0
77 XDEEP2 aeg3-0261 AGN 14 18 51.663 +52 35 59.86   22.77   21.89 20.765 ~ 6 0
78 SDSS J141858.81+523210.1 QSO 14 18 58.804 +52 32 09.98   21.95   21.53 20.94 ~ 10 0
79 GALEX J141902.7+525637 EmG 14 19 02.7864 +52 56 37.640           ~ 1 0
80 GALEX J141935.1+524127 EmG 14 19 35.1168 +52 41 27.197           ~ 1 0
81 [BPG2011] irac125136 EmG 14 19 46.36446 +52 47 55.9211   21.73   21.349 20.45 ~ 4 0
82 GALEX J141950.9+522542 EmG 14 19 50.9976 +52 25 42.715           ~ 1 0
83 GALEX J142013.2+524008 EmG 14 20 13.2240 +52 40 08.825           ~ 1 0
84 GALEX J142015.2+525024 EmG 14 20 15.2568 +52 50 24.799           ~ 1 0
85 SDSS J142027.50+530454.5 QSO 14 20 27.507 +53 04 54.54   22.12   20.99 20.65 ~ 22 0
86 ACS-GC 13026061 AGN 14 20 28.02896 +52 58 41.4558   23.93   22.86 22.21 ~ 11 0
87 GALEX J142028.6+524640 EmG 14 20 28.6704 +52 46 40.210           ~ 1 0
88 GALEX J142028.9+522516 AGN 14 20 28.9848 +52 25 16.896           ~ 1 0
89 ACS-GC 10034534 AGN 14 20 33.948 +53 06 18.28   24.23   22.84 21.40 ~ 4 0
90 NVSS J142049+523205 rG 14 20 49.876 +52 32 06.34           ~ 2 1
91 DEEP2-GRS 13016475 AGN 14 20 57.85 +52 56 41.8   22.97   22.85 22.31 ~ 4 0
92 GALEX J142139.3+523401 AGN 14 21 39.3600 +52 34 01.938           ~ 1 0
93 SDSS J142144.40+523627.7 QSO 14 21 44.405 +52 36 27.75           ~ 4 0
94 GALEX J142148.0+522902 EmG 14 21 48.0168 +52 29 02.519           ~ 1 0
95 [LNG2009] egs-1137 AGN 14 22 01.128 +53 06 36.39   23.87   22.09 21.17 ~ 3 0
96 GALEX J142202.0+530823 EmG 14 22 02.0256 +53 08 23.957           ~ 1 0
97 GALEX J142202.2+522931 EmG 14 22 02.2032 +52 29 31.819           ~ 1 0
98 GALEX J142207.0+525411 AGN 14 22 07.0512 +52 54 11.200           ~ 1 0
99 GALEX J142212.9+522635 EmG 14 22 12.9216 +52 26 35.009           ~ 1 0
100 GALEX J142223.4+525642 EmG 14 22 23.4648 +52 56 42.846           ~ 1 0
101 GALEX J142242.9+525245 EmG 14 22 42.9504 +52 52 45.563           ~ 1 0
102 GALEX J142244.6+525442 EmG 14 22 44.6112 +52 54 42.566           ~ 1 0
103 GALEX J143443.2+353038 EmG 14 34 43.2216 +35 30 38.722           ~ 1 0
104 NDWFS J143449.0+350249 EmG 14 34 49.00 +35 02 48.5       23.18 21.97 ~ 4 0
105 NDWFS J143450.0+352521 QSO 14 34 50.101 +35 25 21.04       20.72 20.32 ~ 7 0
106 CXOXB J143457.0+353213 AGN 14 34 57.0541700880 +35 32 14.150731761       20.87 20.14 ~ 6 0
107 GALEX J143459.1+352505 * 14 34 59.1432 +35 25 05.106           ~ 1 0
108 GALEX J143510.5+351603 EmG 14 35 10.5744 +35 16 03.428           ~ 1 0
109 GALEX J143511.9+345908 EmG 14 35 11.9664 +34 59 08.700           ~ 1 0
110 GALEX J143512.0+352338 EmG 14 35 12.0120 +35 23 38.983           ~ 1 0
111 [KEC2012] 218.814588+35.534251 AGN 14 35 15.501 +35 32 03.30       21.15 20.84 ~ 2 0
112 SDSS J143520.12+350413.2 QSO 14 35 20.1229109592 +35 04 13.251376596       20.14 19.87 ~ 9 0
113 GALEX J143521.4+350510 * 14 35 21.4560 +35 05 10.370           ~ 1 0
114 GALEX J143531.4+351415 EmG 14 35 31.4208 +35 14 15.875           ~ 1 0
115 GALEX J143539.0+351002 EmG 14 35 39.0000 +35 10 02.039           ~ 1 0
116 GALEX J143544.9+350040 AGN 14 35 44.9856 +35 00 40.788           ~ 1 0
117 GALEX J143557.0+350702 EmG 14 35 57.0336 +35 07 02.802           ~ 1 0
118 GALEX J143639.0+350558 AGN 14 36 39.008 +35 05 57.60       21.34 20.75 ~ 3 0
119 [KEC2012] 219.177817+34.841144 AGN 14 36 42.676 +34 50 28.12       21.28 19.91 ~ 2 0
120 GALEX J143652.0+350538 QSO 14 36 51.9792268383 +35 05 37.809867256       19.93 18.98 ~ 7 0
121 GALEX J143655.4+344611 EmG 14 36 55.4088 +34 46 11.485           ~ 1 0
122 [KEC2012] 219.253283+35.525499 QSO 14 37 00.788 +35 31 31.80       21.52 20.57 ~ 2 0
123 [KEC2012] 219.261658+35.032066 QSO 14 37 02.798 +35 01 55.44       21.43 20.89 ~ 2 0
124 NDWFS J143715.0+353355 AGN 14 37 14.96 +35 33 54.7       22.46 21.67 ~ 4 0
125 GALEX J143716.8+352325 EmG 14 37 16.8264 +35 23 25.577           ~ 1 0
126 CXOXB J143726.6+351448 AGN 14 37 26.626 +35 14 48.04       21.20 20.39 ~ 6 0
127 CXOXB J143729.7+350733 AGN 14 37 29.743 +35 07 33.82       20.45 19.45 ~ 5 0
128 [KEC2012] 219.375576+35.337714 QSO 14 37 30.138 +35 20 15.77       21.69 20.99 ~ 3 0
129 CXOXB J143750.4+350647 AGN 14 37 50.4165375576 +35 06 47.348071956       20.73 19.86 ~ 6 0
130 SDSS J143800.47+352208.4 QSO 14 38 00.4733073624 +35 22 08.380118208       19.68 19.09 ~ 18 0
131 SDSS J143801.10+352534.0 QSO 14 38 01.120 +35 25 34.10       21.29 20.92 ~ 8 0
132 GALEX J143810.6+350425 EmG 14 38 10.6584 +35 04 25.468           ~ 1 0
133 GALEX J143813.6+351122 EmG 14 38 13.6656 +35 11 22.798           ~ 1 0
134 GALEX J143819.5+351543 EmG 14 38 19.5696 +35 15 43.452           ~ 1 0
135 CXOXB J143821.7+350709 AGN 14 38 21.746 +35 07 09.90       20.36 19.67 ~ 6 0
136 GALEX J143824.4+352326 AGN 14 38 24.4176 +35 23 26.833           ~ 1 0
137 [KEC2012] 219.621723+35.385676 QSO 14 38 29.214 +35 23 08.43       21.64 21.13 ~ 2 0

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