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Balmer Absorption Lines in FeLoBALs
K. Aoki, I. Iwata, K. Ohta +5
We discovered non-stellar Balmer absorption lines in two many-narrow-trough FeLoBALs (mntBALs) by the near-infrared spectroscopy with Subaru/CISCO. Presence of the non-stellar Balm…
The Long Faint Tail of the High-Redshift Galaxy Population
Marcin Sawicki, Ikuru Iwata, Kouji Ohta +6
We study the properties of very faint, sub-L* Lyman break galaxies at z~2-5 - thus far a largely neglected but numerically and energetically very important population. We find that…
Luminosity Dependent Evolution of Lyman Break Galaxies from redshift 5 to 3
I. Iwata, K. Ohta, N. Tamura +5
In this contribution we briefly describe our recent results on the properties of Lyman break galaxies at z~5 obtained from deep and wide blank field surveys using Subaru telescope,…
Discovery of H alpha absorption in the unusual broad absorption line quasar SDSS J083942.11+380526.3
Kentaro Aoki, Ikuru Iwata, Kouji Ohta +3
We discovered an H alpha absorption in a broad H alpha emission line of an unusual broad absorption line quasar, SDSS J083942.11+380526.3 at z=2.318, by near-infrared spectroscopy…
Deficiency of large equivalent width Lyman-alpha emission in luminous Lyman break galaxies at z~5-6?
Masataka Ando, Kouji Ohta, Ikuru Iwata +3
We report a deficiency of luminous Lyman break galaxies (LBGs) with a large rest-frame equivalent width (EW_rest) of Lyman-alpha emission at z~5-6. Combining our spectroscopic samp…
Escape fraction of ionizing photons from galaxies at z=0--6
Akio K. Inoue, Ikuru Iwata, Jean-Michel Deharveng
The escape fraction of ionizing photons from galaxies is a crucial quantity controlling the cosmic ionizing background radiation and the reionization. Various estimates of this par…