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We present initial results of a survey for star-forming galaxies in the redshift range 3.8 < z < 4.5. This sample consists of a photometric catalog of 244 galaxies culled from a total solid angle of 0.23 square degrees to an apparent…

天体物理学 · 物理学 2011-06-15 C. C. Steidel , K. L. Adelberger , M. Giavalisco , M. Dickinson , M. Pettini

We utilize deep near-infrared survey data from the UltraVISTA fourth data release (DR4) and the VIDEO survey, in combination with overlapping optical and Spitzer data, to search for bright star-forming galaxies at $z \gtrsim 7.5$. Using a…

We present the results of a search for bright (-22.7 < M_UV < -20.5) Lyman-break galaxies at z ~ 6 within a total of 1.65 square degrees of imaging in the UltraVISTA/COSMOS and UKIDSS UDS/SXDS fields. The deep near-infrared imaging…

There has been great progress in recent years in discovering star forming galaxies at high redshifts (z>5), close to the epoch of reionization of the intergalactic medium (IGM). The WFC3 and ACS cameras on the Hubble Space Telescope have…

宇宙学与河外天体物理 · 物理学 2015-06-12 Andrew Bunker

We present a study of a sample of 45 spectroscopically confirmed, UV luminous galaxies at $z\sim 6$. They were selected as bright Lyman-break galaxies (LBGs) using deep multi-band optical images in more than 2 deg$^2$ of the sky, and…

星系天体物理 · 物理学 2024-01-12 Shuqi Fu , Linhua Jiang , Yuanhang Ning , Weiyang Liu , Zhiwei Pan

We present the results of a study of a large sample of luminous (z'{AB}<26) Lyman break galaxies (LBGs) in the redshift interval 4.7<z<6.3, selected from a contiguous 0.63 square degree area covered by the UKIDSS Ultra Deep Survey (UDS) and…

天体物理学 · 物理学 2009-11-13 R. J. McLure , M. Cirasuolo , J. S. Dunlop , S. Foucaud , O. Almaini

We present new Hubble Space Telescope/Wide Field Camera 3 imaging of 25 extremely luminous (-23.2 < M_ UV < -21.2) Lyman-break galaxies (LBGs) at z ~ 7. The sample was initially selected from 1.65 deg^2 of ground-based imaging in the…

星系天体物理 · 物理学 2017-02-01 R. A. A. Bowler , J. S. Dunlop , R. J. McLure , D. J. McLeod

We have measured the rest--frame lambda~1500 Ang comoving specific luminosity density of star--forming galaxies at redshift 3.5<z<6.5 from deep images taken with the Hubble Space Telescope (HST)and the Advanced Camera for Surveys (ACS),…

We present a semi-analytical model of star formation which explains simultaneously the observed UV luminosity function of high redshift Lyman break galaxies (LBGs) and luminosity functions of Lyman-alpha emitters. We consider both models…

宇宙学与河外天体物理 · 物理学 2015-05-13 Saumyadip Samui , Raghunathan Srianand , Kandaswamy Subramanian

We have discovered six galaxies with spectroscopically confirmed redshifts of 4.8<z<5.8 in a single 44 square arcminute field imaged deeply in R, I and z-bands. All the spectra show an emission-line in the region around 7000-8400 angstroms…

天体物理学 · 物理学 2008-11-26 Matthew D. Lehnert , Malcolm Bremer

We derive the luminosity function of high-redshift Lyman alpha emitting sources from a deep, blind, spectroscopic survey that utilized strong-lensing magnification by intermediate-redshift clusters of galaxies. We observed carefully…

天体物理学 · 物理学 2008-11-26 Michael R. Santos , Richard S. Ellis , Jean-Paul Kneib , Johan Richard , Konrad Kuijken

We determine the space density of UV-luminous star-burst galaxies at z~6 using deep HST ACS SDSS-i' (F775W) and SDSS-z' (F850LP) and VLT ISAAC J and K_s band imaging of the Chandra Deep Field South. We find 8 galaxies and one star with…

天体物理学 · 物理学 2010-04-06 Elizabeth Stanway , Andrew Bunker , Richard McMahon

We show that populations of high redshift galaxies grow more luminous as they grow in linear size. This is because the brightness per unit area has a distinct upper limit due to the self-regulating nature of star-formation. As a corollary,…

宇宙学与河外天体物理 · 物理学 2015-05-28 Sangeeta Malhotra , James E. Rhoads , Steven L. Finkelstein , Nimish Hathi , Kim Nilsson , Emily McLinden , Norbert Pirzkal

The advent of 8m-class telescopes has made galaxies at 1 < z < 4 relatively easy to detect and study. This is a brief and incomplete review of some of the recent results to emerge from surveys at these redshifts. After describing different…

天体物理学 · 物理学 2007-05-23 K. L. Adelberger

Star-forming galaxies at redshifts z>6 are likely responsible for the reionization of the universe, and it is important to study the nature of these galaxies. We present three candidates for z~7 Lyman-break galaxies (LBGs) from a 155…

We present the results of a search for Lyman-alpha emission galaxies at z~ 5.7 in the FORS Deep Field. The objective of this study is to improve the faint end of the luminosity function of high-redshift Lyman-alpha emitting galaxies and to…

天体物理学 · 物理学 2009-11-11 C. Tapken , I. Appenzeller , A. Gabasch , J. Heidt , U. Hopp , R. Bender , D. Mehlert , S. Noll , S. Seitz , W. Seifert

We present spectroscopic observations obtained with the ESO Very Large Telecope (VLT) of seven candidate Ly-alpha emitting galaxies in the field of the radio quiet Q1205-30 at z=3.04 previously detected with deep narrow band imaging. Based…

天体物理学 · 物理学 2009-11-06 J. U. Fynbo , P. Moller , B. Thomsen

(abridged) We present results of a search for Lyman break galaxies (LBGs) at z ~ 5 in a 618 square-arcmin field including the HDF-N taken by Subaru Prime Focus Camera. Utilizing the published redshift data of the HDF-N and its flanking…

天体物理学 · 物理学 2015-06-24 I. Iwata , K. Ohta , N. Tamura , M. Ando , S. Wada , C. Watanabe , M. Akiyama , K. Aoki

Recent observations of the Lyman-break galaxy (LBG) luminosity function (LF) from z~6-10 show a steep decline in abundance with increasing redshift. However, the LF is a convolution of the mass function of dark matter halos (HMF)--which…

宇宙学与河外天体物理 · 物理学 2015-05-27 Joseph A. Muñoz

We analyse recently acquired near-infrared Hubble Space Telescope imaging of the GOODS-South field to search for star forming galaxies at z~7.0. By comparing WFC 3 0.98 micron Y-band images with ACS z-band (0.85 micron) images, we identify…

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