2007A&A...461..911C


C.D.S. - SIMBAD4 rel 1.7 - 2019.10.16CEST17:29:59

2007A&A...461..911C - Astronomy and Astrophysics, volume 461, 911-916 (2007/1-3)

A narrow-band search for Lyα emitting galaxies at z = 8.8.

CUBY J.-G., HIBON P., LIDMAN C., LE FEVRE O., GILMOZZI R., MOORWOOD A. and VAN DER WERF P.

Abstract (from CDS):

The first star forming galaxies in the early universe should be copious Lyα emitters and may play a significant role in ionizing the intergalactic medium (IGM). It has been proposed that the luminosity function of Lyα emitting galaxies beyond z∼6 may be used to constrain the neutral fraction of the IGM during this epoch. In this work we report on a search for Lyα emitters at redshift 8.8. We performed a narrow band imaging programme using ISAAC at the ESO VLT. Seven fields, covering a total area of 31 sq. arcmin and for which optical and broad band infra-red images have been obtained in the GOODS survey, were imaged to a limiting flux (respectively luminosity) of ∼1.3x10–17erg/s/cm2 (respectively ∼1.3x1043erg/s) in a narrow band filter centered in a region of low OH sky emission at 1.19µm. Candidate Lyα emitters are objects that are detected in the ISAAC NB images and undetected in the visible broad band images. No z=8.8 Lyα emitting galaxies were detected to a limit approaching recent estimates of the luminosity function at z∼6. Our results do suggest, however, that detections or substantial constraints could be achieved by this method in the near future with larger field instruments planned for various telescopes.

Abstract Copyright:

Journal keyword(s): galaxies: luminosity function, mass function - cosmology: early Universe

Simbad objects: 2

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Number of rows : 2

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2019
#notes
1 NAME Chandra Deep Field-South reg 03 32 28.0 -27 48 30           ~ 1750 1
2 NAME HDF-S reg 22 32 56 -60 33.0           ~ 534 0

    Equat.    Gal    SGal    Ecl

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2019.10.16-17:29:59

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