activity
20162023
most citedMethod to Estimate the Effective Temperatures of Late-Type Giants using Line-Depth Ratios in the Wavelength Range 0.97-1.32m

24 citations · 102 across the 7 of their papers we have counts for

collaborators

16 papers

astro-ph.GA2023

Shock Excitation in Narrow Line Regions Powered by AGN Outflows

Misaki Mizumoto, Hiroaki Sameshima, Naoto Kobayashi +10

Outflows in the Active Galactic Nucleus (AGN) are considered to play a key role in the host galaxy evolution through transfer of a large amount of energy. A Narrow Line Region (NLR…

astro-ph.SR2021

Absorption Lines in the 0.91-1.33 m Spectra of Red Giants for Measuring Abundances of Mg, Si, Ca, Ti, Cr, and Ni

K. Fukue, N. Matsunaga, S. Kondo +13

Red giants show a large number of absorption lines in both optical and near-infrared wavelengths. Still, the characteristics of the lines in different wave passbands are not necess…

astro-ph.GA202016 cited

Mg II and Fe II fluxes of luminous quasars at z ~ 2.7 and evaluation of the Baldwin effect in the flux-to-abundance conversion method for quasars

Hiroaki Sameshima, Yuzuru Yoshii, Noriyuki Matsunaga +12

To investigate the chemical abundance of broad-line region clouds in quasars at high redshifts, we performed near-infrared spectroscopy of six luminous quasars at z ~ 2.7 with the…

astro-ph.SR202010 cited

The effect of surface gravity on line-depth ratios in the wavelength range 0.97-1.32 μm

Mingjie Jian, Daisuke Taniguchi, Noriyuki Matsunaga +10

A line-depth ratio (LDR) of two spectral lines with different excitation potentials is expected to be correlated with the effective temperature (). It is possible t…

astro-ph.SR201916 cited

Identification of Absorption Lines of Heavy Metals in the Wavelength Range 0.97--1.32 Micron

Noriyuki Matsunaga, Daisuke Taniguchi, Mingjie Jian +13

Stellar absorption lines of heavy elements can give us various insights into the chemical evolution of the Galaxy and nearby galaxies. Recently developed spectrographs for the near…

astro-ph.SR2019

Possible progression of mass flow processes around young intermediate-mass stars based on high-resolution near-infrared spectroscopy. I. Taurus

Chikako Yasui, Satoshi Hamano, Kei Fukue +12

We used the WINERED spectrograph to perform near-infrared high-resolution spectroscopy (resolving power ,000) of 13 young intermediate-mass stars in the Taurus star-forming…