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Afterglow spectrum of a gamma-ray burst with the highest known redshift z=6.295
N. Kawai, G. Kosugi, K. Aoki +25
Gamma-ray bursts (GRBs) and their afterglows have been proposed as an excellent probe to study the evolution of cosmic star formation, the reionization of the intergalactic medium,…
Implications for the Cosmic Reionization from the Optical Afterglow Spectrum of the Gamma-Ray Burst 050904 at z = 6.3
Tomonori Totani, Nobuyuki Kawai, George Kosugi +5
The gamma-ray burst (GRB) 050904 at z = 6.3 provides the first opportunity of probing the intergalactic medium (IGM) by GRBs at the epoch of the reionization. Here we present a spe…
Near-Infrared search for C IV absorption counterparts along the line-of-sights to pair quasars
Toru Misawa, Nobunari Kashikawa, Youichi Ohyama +2
We carried out a Subaru and UKIRT near infrared imaging survey for H-alpha emitting galaxies around two pair quasar systems (Q0301-005/Q0302-003 and Q2343+125/Q2344+125), and a tri…
Clustering of Lyman Break Galaxies at z=4 and 5 in The Subaru Deep Field: Luminosity Dependence of The Correlation Function Slope
Nobunari Kashikawa, Makiko Yoshida, Kazuhiro Shimasaku +8
We explored the clustering properties of Lyman Break Galaxies (LBGs) at z=4 and 5 with an angular two-point correlation function on the basis of the very deep and wide Subaru Deep…
The Number Density of Old Passively-Evolving Galaxies at z=1 in the Subaru/XMM-Newton Deep Survey Field
Toru Yamada, Tadayuki Kodama, Masayuki Akiyama +10
We obtained the number counts and the rest-frame B-band luminosity function of the color-selected old passively-evolving galaxies (OPEGs) at z=1 with very high statistical accuracy…
Spectroscopy of i-Dropout Galaxies with an NB921-Band Depression in the Subaru Deep Field
T. Nagao, N. Kashikawa, M. A. Malkan +9
We report new spectroscopy of two star-forming galaxies with strong Ly_alpha emission at z=6.03 and z=6.04 in the Subaru Deep Field. These two objects are originally selected as i'…