40 citations · 144 across the 10 of their papers we have counts for
10 papers
SHARPEST: The atmospheric turbulence profiling experiment using Shack-Hartmann sensor at the Subaru telescope
Hajime Ogane, Yoshito Ono, Yosuke Minowa +5
Atmospheric turbulence profile plays an important role in designing and operating adaptive optics (AO) systems with multiple laser guide stars. To obtain representative free atmosp…
Extreme nature of four blue-excess dust-obscured galaxies revealed by optical spectroscopy
Akatoki Noboriguchi, Tohru Nagao, Yoshiki Toba +13
We report optical spectroscopic observations of four blue-excess dust-obscured galaxies (BluDOGs) identified by Subaru Hyper Suprime-Cam. BluDOGs are a sub-class of dust-obscured g…
Optical IFU Observations of GOALS Sample with KOOLS-IFU on Seimei Telescope: Initial results of 9 U/LIRGs at 0.04
Yoshiki Toba, Satoshi Yamada, Kazuya Matsubayashi +23
We present ionized gas properties of 9 local ultra/luminous infrared galaxies (U/LIRGs) at 0.04 through IFU observations with KOOLS-IFU on Seimei Telescope. The observed targ…
Multi-line assessment of narrow-line regions in 3 radio galaxies
Koki Terao, Tohru Nagao, Kyoko Onishi +4
In this paper, we utilize high-quality rest-UV spectra of three radio galaxies at 3 observed with VLT/FORS2 to measure the flux of several emission lines including relativ…
Do gas clouds in narrow-line regions of Seyfert galaxies come from their nuclei?
Kazuma Joh, Tohru Nagao, Keiichi Wada +2
The narrow-line region (NLR) consists of gas clouds ionized by the strong radiation from the active galactic nucleus (AGN), distributed in the spatial scale of AGN host galaxies. T…
The mass-metallicity relation of high-z type-2 active galactic nuclei
Kenta Matsuoka, Tohru Nagao, Alessandro Marconi +5
The mass-metallicity relation (MZR) of type-2 active galactic nuclei (AGNs) at 1.2 < z < 4.0 is investigated by using high-z radio galaxies (HzRGs) and X-ray selected radio-quiet A…
Near-IR spectroscopy of luminous LoBAL quasars at 1<z<2.5
Andreas Schulze, Malte Schramm, Wenwen Zuo +7
We present near-IR spectroscopy of 22 luminous low-ionization broad absorption line quasars (LoBAL QSOs) at redshift 1.3<z<2.5, with 12 objects at z~1.5 and 10 at z~2.3. The spectr…
Active Galactic Nuclei with a Low-Metallicity Narrow-Line Region
Kota Kawasaki, Tohru Nagao, Yoshiki Toba +2
Low-metallicity active galactic nuclei (AGNs) are interesting to study the early phase of the AGN evolution. However most AGNs are chemically matured and accordingly low-metallicit…
Near-infrared spectroscopy of nearby Seyfert galaxies: Is there evidence for the shock excitation in narrow-line regions?
Koki Terao, Tohru Nagao, Tetsuya Hashimoto +5
One of the unsettled, important problems in active galactic nuclei (AGNs) is the major ionization mechanism of gas clouds in their narrow-line regions (NLRs). In order to investiga…
Genuine Irregular Galaxies as a Relic of Building Blocks of Galaxies
K. Terao, Y. Taniguchi, M. Kajisawa +9
In order to understand nature of building blocks of galaxies in the early universe, we investigate "genuine irregular galaxies (GIGs)" in the nearby universe. Here, GIGs are define…