/ftp/cats/J_ApJS/176/301



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J/ApJS/176/301        Subaru/XMM-Newton deep survey IV. (SXDS)    (Ouchi+, 2008)
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Beginning of ReadMe : J/ApJS/176/301 Subaru/XMM-Newton deep survey IV. (SXDS) (Ouchi+, 2008) ================================================================================ The Subaru/XMM-Newton deep survey (SXDS). IV. Evolution of Lyalpha emitters from z=3.1 to 5.7 in the 1 deg^2^ field: luminosity functions and AGN. Ouchi M., Shimasaku K., Akiyama M., Simpson C., Saito T., Ueda Y., Furusawa H., Sekiguchi K., Yamada T., Kodama T., Kashikawa N., Okamura S., Iye M., Takata T., Yoshida M., Yoshida M. <Astrophys. J. Suppl. Ser., 176, 301-330 (2008)> =2008ApJS..176..301O ================================================================================ ADC_Keywords: Redshifts ; Photometry ; Equivalent widths Keywords: cosmology: observations - galaxies: formation galaxies: high-redshift Abstract: We present luminosity functions (LFs) and various properties of Lyalpha emitters (LAEs) at z=3.1, 3.7, and 5.7, in a 1deg^2^ 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 Subaru FOCAS and VLT VIMOS spectroscopy in a survey volume of  10^6^Mpc^3^ with a limiting Lyalpha luminosity of  3x10^42^ergs/s. We derive the LFs of the Lyalpha and UV continuum ( 1500AA) for each redshift, taking into account the statistical error and the field-to-field variation. 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 logL(Lyalpha)> 43.4-43.6ergs/s appear to always host AGNs. Our LAEs are bluer in UV-continuum color than dropout galaxies, suggesting lower extinction and/or younger stellar populations. Description: We carried out narrowband imaging with Subaru/Suprime-Cam on seven nights during 2003 September 28-30, October 22-24, and 26.