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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
The LBT boötes field survey. I. the rest-frame ultraviolet and near-infrared luminosity functions and clustering of bright lyman break galaxies at Z ∼ 3
Astrophysical Journal, Volume 774, No. 1, Article 28, Year 2013
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Description
We present a deep LBT/LBC Uspec-band imaging survey (9 deg 2) covering the NOAO Boötes field. A total of 14,485 Lyman break galaxies (LBGs) at z ∼ 3 are selected, which are used to measure the rest-frame UV luminosity function (LF). The large sample size and survey area reduce the LF uncertainties due to Poisson statistics and cosmic variance by ≥3 compared to previous studies. At the bright end, the LF shows excess power compared to the best-fit Schechter function, which can be attributed to the contribution of z ∼ 3 quasars. We compute the rest-frame near-infrared LF and stellar mass function (SMF) of z ∼ 3 LBGs based on the R-band and [4.5 μm]-band flux relation. We investigate the evolution of the UV LFs and SMFs between z ∼ 7 and z ∼ 3, which supports a rising star formation history in the LBGs. We study the spatial correlation function of two bright LBG samples and estimate their average host halo mass. We find a tight relation between the host halo mass and the galaxy star formation rate (SFR), which follows the trend predicted by the baryonic accretion rate onto the halo, suggesting that the star formation in LBGs is fueled by baryonic accretion through the cosmic web. By comparing the SFRs with the total baryonic accretion rates, we find that cosmic star formation efficiency is about 5%-20% and it does not evolve significantly with redshift, halo mass, or galaxy luminosity. © 2013. The American Astronomical Society. All rights reserved.
Authors & Co-Authors
Bian, Fuyan
United States, Tucson
The University of Arizona
Fan, Xiaohui
United States, Tucson
The University of Arizona
Jiang, Linhua
United States, Tucson
The University of Arizona
McGreer, Ian D.
United States, Tucson
The University of Arizona
Dey, Arjun T.
United States, Tucson
National Optical Astronomy Observatory
Green, Richard F.
United States, Tucson
Large Binocular Telescope Observatory
Maiolino, Roberto
United Kingdom, Cambridge
University of Cambridge
Walter, Fabian W.
Germany, Heidelberg
Max Planck Institute for Astronomy
Dav́e, Romeel
United States, Tucson
The University of Arizona
Statistics
Citations: 44
Authors: 9
Affiliations: 6
Identifiers
Doi:
10.1088/0004-637X/774/1/28
ISSN:
0004637X
Study Design
Cross Sectional Study
Study Approach
Quantitative