activity
19962020
most citedNucleosynthetic signatures of the first stars

566 citations · 2.5k across the 32 of their papers we have counts for

collaborators

32 papers

astro-ph.SR2020★ 41 cited

On the first Sct--roAp hybrid pulsator and the stability of p and g modes in chemically peculiar A/F stars

Simon J. Murphy, Hideyuki Saio, Masahide Takada-Hidai +4

Strong magnetic fields in chemically peculiar A-type (Ap) stars typically suppress low-overtone pressure modes (p modes) but allow high-overtone p modes to be driven. KIC 11296437…

astro-ph.SR2017★ 13 cited

Spectroscopic and asteroseismic analysis of the remarkable main-sequence A star KIC 11145123

Masahide Takada-Hidai, Donald W. Kurtz, Hiromoto Shibahashi +4

A spectroscopic analysis was carried out to clarify the properties of KIC 11145123 -- the first main-sequence star with a determination of core-to-surface rotation -- based on spec…

astro-ph.SR2016★ 8 cited

A non-LTE study of silicon abundances in giant stars from the Si I infrared lines in the zJ-band

Kefeng Tan, Jianrong Shi, Masahide Takada-Hidai +2

We investigate the feasibility of the Si I infrared (IR) lines as Si abundance indicators for giant stars. We find that Si abundances obtained from the Si I IR lines based on the l…

astro-ph.SR2013★ 16 cited

Carbon Abundances of Metal-Poor Star Determined from the C I 1.068-1.069 micron Lines

Yoichi Takeda, Masahide Takada-Hidai

A non-LTE analysis of C I lines at 1.068-1.069 micron was carried out for selected 46 halo/disk stars covering a wide metallicity range (-3.7 <[Fe/H]< +0.3), based on the spectral…

astro-ph.SR2012★ 182 cited

High-Resolution Spectroscopy of Extremely Metal-Poor Stars from SDSS/SEGUE: I. Atmospheric Parameters and Chemical Compositions

Wako Aoki, Timothy C. Beers, Young Sun Lee +8

Chemical compositions are determined based on high-resolution spectroscopy for 137 candidate extremely metal-poor (EMP) stars selected from the Sloan Digital Sky Survey (SDSS) and…

astro-ph.EP2011★ 23 cited

A Planetary Companion to the Intermediate-Mass Giant HD 100655

Masashi Omiya, Inwoo Han, Hideyuki Izumiura +10

A precise radial velocity survey conducted by a Korean-Japanese planet search program revealed a planetary companion around the intermediate-mass clump giant HD 100655. The radial…