109 citations
- University of TsukubaJP13 papers
- National Astronomical Observatory of JapanJP9 papers
- The University of TokyoJP8 papers
- Hiroshima UniversityJP7 papers
- Kyoto UniversityJP6 papers
- Tokai UniversityJP4 papers
- Chinese Academy of SciencesCN3 papers
- Fukuoka UniversityJP3 papers
- Harvard UniversityUS3 papers
- Massachusetts Institute of TechnologyUS3 papers
- Nagoya UniversityJP3 papers
- National Astronomical ObservatoriesCN3 papers
Showing 2001Show all
3 papers · 1 filter
astro-ph2001★ 72 cited
On the Abundance of Potassium in Metal-Poor Stars
Yoichi Takeda, Gang Zhao, Yu-Qin Chen +2
Based on extensive statistical-equilibrium calculations, we performed a non-LTE analysis of the K {\sc i} 7699 equivalent-width data of metal-deficient stars for the purpose of cla…
astro-ph2001★ 93 cited
Photospheric Abundances of Volatile and Refractory Elements in Planet-Harboring Stars
Y. Takeda, B. Sato, E. Kambe +16
By using the high-dispersion spectra of 14 bright planet-harboring stars (along with 4 reference stars) observed with the new coude echelle spectrograph at Okayama Astrophysical Ob…
astro-ph2001★ 97 cited
Oxygen Line Formation in Late-F through Early-K Disk/Halo Stars: Infrared O I Triplet and [O I] Lines
Yoichi Takeda
In order to investigate the formation of O {\sc i} 7771--5 and [O {\sc i}] 6300/6363 lines, extensive non-LTE calculations for neutral atomic oxygen were carried out for wide range…