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Diffuse Lyman-alpha Halos around Galaxies at z=2.2-6.6: Implications for Galaxy Formation and Cosmic Reionization
Rieko Momose, Masami Ouchi, Kimihiko Nakajima +6
We present diffuse Lyman-alpha halos (LAHs) identified in the composite Subaru narrowband images of 100-3600 Lyman-alpha emitters (LAEs) at z=2.2, 3.1, 3.7, 5.7, and 6.6. First, we…
Accelerated Evolution of Ly Luminosity Function at Revealed by the Subaru Ultra-Deep Survey for Ly Emitters at
Akira Konno, Masami Ouchi, Yoshiaki Ono +8
We present the ultra-deep Subaru narrowband imaging survey for Lya emitters (LAEs) at in SXDS and COSMOS fields with a total integration time of 106 hours. Exploiting our n…
What is the Physical Origin of Strong Lya Emission? I. Demographics of Lya Emitter Structures
Takatoshi Shibuya, Masami Ouchi, Kimihiko Nakajima +5
We present the results of structure analyses for a large sample of 426 Lya emitters (LAEs) at z~2.2 that are observed with HST/ACS and WFC3-IR by deep extra-galactic legacy surveys…
The mass-metallicity relation at z~1.4 revealed with Subaru/FMOS
Kiyoto Yabe, Kouji Ohta, Fumihide Iwamuro +16
We present a stellar mass-metallicity relation at z~1.4 with an unprecedentedly large sample of ~340 star-forming galaxies obtained with FMOS on the Subaru Telescope. We observed K…
First Systematic Search for Oxygen-Line Blobs at High Redshift: Uncovering AGN Feedback and Star-Formation Quenching
Suraphong Yuma, Masami Ouchi, Alyssa B. Drake +8
We present the first systematic search for extended metal-line [OII]λλ3726,3729 nebulae, or [OII] blobs (OIIBs), at z=1.2 using deep narrowband imaging with a survey volume of 1.9x…
Intrinsic Shape of Star-Forming BzK Galaxies II: Rest-Frame UV and Optical Structures in GOODS-South and SXDS
Suraphong Yuma, Kouji Ohta, Kiyoto Yabe
(Abridge) We study statistical intrinsic shape of star-forming BzK galaxies (sBzK galaxies) at z~2 in both rest-frame UV and rest-frame optical wavelengths. The sBzK galaxies are s…
NIR Spectroscopy of Star-Forming Galaxies at z~1.4 with Subaru/FMOS: The Mass-Metallicity Relation
Kiyoto Yabe, Kouji Ohta, Fumihide Iwamuro +16
We present near-infrared spectroscopic observations of star-forming galaxies at z~1.4 with FMOS on the Subaru Telescope. We observed K-band selected galaxies in the SXDS/UDS fields…
Intrinsic Shape of Star-Forming BzK Galaxies at z~2 in GOODS-N
Suraphong Yuma, Kouji Ohta, Kiyoto Yabe +2
We study structure of star-forming galaxies at z~2 in GOODS-N field selected as sBzK galaxies down to K_{AB} <24.0 mag. Among 1029 sBzK galaxies, 551 galaxies (54%) show a single c…
Stellar Populations of Lyman-alpha Emitters at z=4.86: A Comparison to LBGs
Suraphong Yuma, Kouji Ohta, Kiyoto Yabe +5
(abridged) We present a study of stellar population of LAEs at z=4.86 in GOODS-N and its flanking field. With the publicly available IRAC data in GOODS-N and further IRAC observati…
Lyman Break Galaxies at z~5: Rest-Frame UV Spectra. III
Hiroki Kajino, Kouji Ohta, Ikuru Iwata +6
We present results of optical spectroscopic observations of candidates of Lyman Break Galaxies (LBGs) at in the region including the GOODS-N and the J0053+1234 region by…