87 citations · 179 across the 8 of their papers we have counts for
8 papers · 1 filter
CO Observations of a FeLoBAL Quasar with an H alpha Absorption Line at z=2.3
Kouji Ohta, Gaku Kiuchi, Kouichiro Nakanishi +5
SDSS J083942.11+380526.3 is an Iron Low-ionization Broad Absorption Line (FeLoBAL) quasar at z = 2.3, and Aoki et al. (2006) recently found the presence of an H alpha absorption li…
Differential Evolution of the UV Luminosity Function of Lyman Break Galaxies from z~5 to 3
I. Iwata, K. Ohta, N. Tamura +5
(abridged) We report the UV luminosity function (LF) of Lyman break galaxies at z~5 derived from a deep and wide survey using the Subaru/Suprime-Cam. Target fields consist of two b…
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…
A Bar Fuels a Super-Massive Black Hole?: Host Galaxies of Narrow-Line Seyfert 1 Galaxies
Kouji Ohta, Kentaro Aoki, Toshihiro Kawaguchi +1
We present optical images of nearby 50 narrow-line Seyfert 1 galaxies (NLS1s) which cover all the NLS1s at z<0.0666 and known at the time of 2001. Among the 50 N…
Host Galaxies of Hard X-ray Selected Type-2 Active Galactic Nuclei at Intermediate Redshifts
Gaku Kiuchi, Kouji Ohta, Masayuki Akiyama +2
We study properties of the host galaxies of 15 hard X-ray selected type-2 active galactic nuclei (AGNs) at intermediate redshifts (0.050.6) detected in surveys. The abs…