Skip to content
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
The subaru/XMM-Newton Deep Survey (SXDS). IV. Evolution of lyα emitters from z = 3.1 to 5.7 in the 1 deg2 field: Luminosity functions and AGN
Astrophysical Journal, Supplement Series, Volume 176, No. 2, Year 2008
Notification
URL copied to clipboard!
Description
We present luminosity functions (LFs) and various properties of Lyα emitters (LAEs) at z = 3.1, 3.7, and 5.7, in a 1 deg2 sky of the Subaru/XMM-Newton Deep Survey (SXDS) Field. We obtain a photometric sample of 858 LAE candidates based on deep Subaru Suprime-Cam imaging data and a spectroscopic sample of 84 confirmed LAEs from Subam FOCAS and VLT VIMOS spectroscopy in a survey volume of ∼106 Mpc3 with a limiting Lyα luminosity of ∼3 × 1042 ergs s -1. We derive the LFs of the Lyα and UV continuum (≃1500 Å) for each redshift, taking into account the statistical error and the field-to-field variation. We find that the apparent Lyα LF shows no significant evolution between z = 3.1 and 5.7 within factors of 1.8 and 2.7 in L* and φ*, respectively. On the other hand, the UV LF of LAEs increases from z = 3.1 to 5.7, indicating that galaxies with Lyα emission are more common at earlier epochs. We identify six LAEs with AGN activities from our spectra combined with VLA, Spitzer, and XMM-Newton data. Among the photometrically selected LAEs at z = 3.1 and 3.7, only ≃1% show AGN activities, while the brightest LAEs with log L(Lyα) ≥ 43.4-43.6 ergs s-1 appear to always host AGNs. Our LAEs are bluer in UV-continuum color than dropout galaxies, suggesting lower extinction and/or younger stellar populations. Our stacking analyses provide upper limits to the radio luminosity and the ∫He II/∫Lyα line fraction and constrain the hidden star formation (+low-luminosity AGN) and the primordial population in LAEs. © 2008. The American Astronomical Society. All rights reserved.
Authors & Co-Authors
Ouchi, Masami
United States, Baltimore
Space Telescope Science Institute
United States, Pasadena
Carnegie Observatories
Shimasaku, Kazuhiro
Japan, Tokyo
The University of Tokyo
Akiyama, Masayuki
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Simpson, Chris J.S.M.
United Kingdom, Liverpool
Liverpool John Moores University
Saito, Tomoki
Japan, Matsuyama
Ehime University
Ueda, Yoshihiro
Japan, Kyoto
Kyoto University
Furusawa, Hisanori
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Sekiguchi, Kazuhiro
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Kodama, Tadayuki
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Kashikawa, Nobunari
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Okamura, Sadanori
Japan, Tokyo
The University of Tokyo
Yoshida, Michitoshi
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Statistics
Citations: 494
Authors: 12
Affiliations: 8
Identifiers
Doi:
10.1086/527673
ISSN:
00670049
Research Areas
Environmental
Study Design
Cross Sectional Study
Study Approach
Quantitative