14 citations · 24 across the 3 of their papers we have counts for
5 papers · 1 filter
Neon Abundances of B-stars in the Solar Neighborhood
Sofya Alexeeva, Tianxiang Chen, Tatyana Ryabchikova +4
We constructed a comprehensive model atom for NeI -- NeII using the most up-to-date atomic data available and evaluated the non-local thermodynamic equilibrium (NLTE) line formatio…
The NLTE Analyses of Carbon Emission Lines in the Atmospheres of O and B type Stars
Sofya Alexeeva, Kozo Sadakane, Masayoshi Nishimura +2
We present a model atom for C I - C II - C III - C IV using the most up-to-date atomic data and evaluated the non-local thermodynamic equilibrium (NLTE) line formation in classical…
A Spectroscopic Study of Weak Metallic Emission Lines in a B3V Star iota Her
Kozo Sadakane, Masayoshi Nishimura
We present a list of weak emission lines (WELs) observed in a sharp-lined B3 V star ι Her (HD 160762) using high resolution (R = 65000) and high SN (~1300) spectral data. The list…
Spectroscopic abundance analyses of the 3He stars HD 185330 and 3 Cen A
Kozo Sadakane, Masayoshi Nishimura
Abundances of 21 elements in two 3He stars HD 185330 and 3 Cen A have been analysed relative to the well studied sharp-lined B3 V star iota Her. Six elements (P, Ti, Mn, Fe, Ni, an…
Weak Metallic Emission Lines in Early B-Type Stars
Kozo Sadakane, Masayoshi Nishimura
Previously unrecognized weak emission lines originating from high excitation states of Si II (12.84 eV) and Al II (13.08 eV) are detected in the red region spectra of slowly rotati…