5 papers · 1 filter
The Carbon Abundance and 12C/13C Isotopic Ratio in the Atmosphere of Arcturus from 2.3 micron CO Bands
Ya. V. Pavlenko
Absorption lines of the 12CO and 13CO molecular bands (Delta v = 2) at 2.29 -- 2.45 micron are modelled in spectrum of Arcturus (K2III). We compute a grid of model atmospheres and…
The absorption spectrum of V838 Mon in 2002 February - March. I. Atmospheric parameters and iron abundance
B. M. Kaminsky, Ya. V. Pavlenko
We present a determination of the effective temperatures, iron abundances, and microturbulent velocities for the pseudophotosphere of V838 Mon on 2002 February 25, and March 2 and…
Lithium and its isotopic ratio 6Li/7Li in the atmospheres of some sharp-lined roAp star
A. Shavrina, N. Polosukhina, S. Khan +10
The lines of lithium at 6708 A, and 6103 A, are analyzed in high resolution spectra of some sharp-lined and slowly rotating roAp stars. Three spectral synthesis codes - STARSP, ZEE…
First detection of a lithium rich carbon star in the Draco dwarf galaxy: evidence for a young stellar population
I. Dominguez, C. Abia, O. Straniero +2
We present a spectroscopic study of D461, a giant star belonging to Draco dwarf spheroidal galaxy. From spectral synthesis in LTE we derive a lithium abundance of log e(Li)=3.5+/-0…
The spectrum of the roAp star HD 101065(Przybylski's star) in the Li I 6708 A spectral region
A. V. Shavrina, N. S. Polosukhina, Ya. V. Pavlenko +8
We carried out a detailed analysis of spectra of the unique roAp star HD 101065 (Przybylski's star) near the resonance doublet Li I 6708 A, using a most complete line list includin…