2012ApJ...749..106B


C.D.S. - SIMBAD4 rel 1.7 - 2021.03.06CET01:17:59

2012ApJ...749..106B - Astrophys. J., 749, 106 (2012/April-3)

A flux-limited sample of z ∼ 1 Lyα emitting galaxies in the Chandra Deep Field South.

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

Abstract (from CDS):

We describe a method for obtaining a flux-limited sample of Lyα emitters from Galaxy Evolution Explorer (GALEX) grism data. We show that the multiple GALEX grism images can be converted into a three-dimensional (two spatial axes and one wavelength axis) data cube. The wavelength slices may then be treated as narrowband images and searched for emission-line galaxies. For the GALEX NUV grism data, the method provides a Lyα flux-limited sample over the redshift range z = 0.67-1.16. We test the method on the Chandra Deep Field South field, where we find 28 Lyα emitters with faint continuum magnitudes (NUV > 22) that are not present in the GALEX pipeline sample. We measure the completeness by adding artificial emitters and measuring the fraction recovered. We find that we have an 80% completeness above a Lyα flux of 10–15 erg/cm2/s. We use the UV spectra and the available X-ray data and optical spectra to estimate the fraction of active galactic nuclei in the selection. We report the first detection of a giant Lyα blob at z < 1, though we find that these objects are much less common at z = 1 than at z = 3. Finally, we compute limits on the z ∼ 1 Lyα luminosity function and confirm that there is a dramatic evolution in the luminosity function over the redshift range z = 0-1.

Abstract Copyright:

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

Simbad objects: 30

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Number of rows : 30

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 GALEX J033044.8-280237 EmG 03 30 44.850 -28 02 37.50           ~ 2 0
2 GALEX J033045.5-274506 EmG 03 30 45.539 -27 45 06.70           ~ 2 0
3 GALEX J033057.5-273316 EmG 03 30 57.530 -27 33 16.50           ~ 2 0
4 GALEX J033111.6-275506 EmG 03 31 11.63 -27 55 06.3           ~ 5 0
5 GALEX J033112.0-281517 EmG 03 31 12.090 -28 15 17.90           ~ 2 0
6 GALEX J033113.8-274949 EmG 03 31 13.821 -27 49 49.00           ~ 2 0
7 GALEX J033121.0-274916 EmG 03 31 20.957 -27 49 18.13       21.88   ~ 4 0
8 GALEX J033124.4-275625 EmG 03 31 24.400 -27 56 25.71           ~ 2 0
9 GALEX J033131.2-273429 Sy2 03 31 31.28 -27 34 29.8   23.46 23.48 22.99   ~ 13 0
10 GALEX J033146.1-274846 EmG 03 31 46.190 -27 48 46.10           ~ 2 0
11 GALEX J033146.2-272942 EmG 03 31 46.200 -27 29 42.90           ~ 2 0
12 CXOCDFS J033200.4-274320 QSO 03 32 00.353 -27 43 19.66 22.76 22.7055 22.335 22.01 22.2135 ~ 50 0
13 GALEX J033202.5-280320 QSO 03 32 02.559 -28 03 20.92       22.80   ~ 14 0
14 2XMM J033204.0-273726 Sy1 03 32 04.07 -27 37 25.4   23.92 22.97 23.17 23.23 ~ 27 0
15 GALEX J033206.3-281408 EmG 03 32 06.350 -28 14 08.60           ~ 2 0
16 NAME Chandra Deep Field-South reg 03 32 28.0 -27 48 30           ~ 1859 1
17 GALEX J033228.3-273614 EmG 03 32 28.360 -27 36 14.40           ~ 1 0
18 NAME Extended Chandra Deep Field South reg 03 32 30.0 -27 48 20           ~ 646 0
19 GALEX J033230.1-280804 AGN 03 32 30.160 -28 08 04.30           ~ 2 0
20 GALEX J033235.7-274059 EmG 03 32 35.730 -27 40 59.50           ~ 2 0
21 GALEX J033246.9-274154 EmG 03 32 46.950 -27 41 54.30           ~ 2 0
22 GALEX J033251.4-280809 EmG 03 32 51.441 -28 08 09.50           ~ 2 0
23 GALEX J033255.5-281320 EmG 03 32 55.571 -28 13 20.90           ~ 2 0
24 GALEX J033301.2-273227 EmG 03 33 01.230 -27 32 27.39           ~ 3 0
25 GALEX J033314.5-274834 EmG 03 33 14.539 -27 48 34.29           ~ 2 0
26 GALEX J033329.5-280127 EmG 03 33 29.594 -28 01 27.18       23.41   ~ 3 0
27 [LBA2005] 741 EmG 03 33 35.549 -27 39 34.74 23.00 22.51 21.87 20.90   ~ 10 0
28 GALEX J033336.6-274224 AGN 03 33 36.67 -27 42 24.2       23.01   ~ 12 0
29 GALEX J033348.8-280216 EmG 03 33 48.870 -28 02 16.79           ~ 2 0
30 GALEX J033359.7-275326 AGN 03 33 59.78 -27 53 27.3           ~ 3 0

    Equat.    Gal    SGal    Ecl

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2021.03.06-01:17:59

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