The inclusion of magnetic splitting of lines in the determination of the lithium abundance and isotopic ratio in the atmosphere of the roAp-star HD 101065

Heading: 
Physics of Stars and Interstellar Medium
1Shavrina, AV, Khalack, VR, Mykhailytska, NG, Polosukhina, NS
1Main Astronomical Observatory of the National Academy of Sciences of Ukraine, Kyiv, Ukraine
Kinemat. fiz. nebesnyh tel (Online) 2004, 20(1):43-52
Language: Russian
Abstract: 

Calculations of synthetic spectra with the Zeeman magnetic splitting of lithium and rare earth (Ce II, Nd II, Sm II and others) lines for the roAp-star HD 101065 (Przybylski's star) in a spectral region of 670.58 to 670.87 nm were carried out to fit to an observed spectrum near the lithium line λ = 670.8 nm. The hyperfine structure of lithium lines are taken into account in detailed calculations. This allowed us to evaluate the influence of magnetic splitting on estimates of the lithium abundance in the star atmosphere and a value of the isotopic ratio 6Li/7Li.

 
Keywords: atmosphere, stars

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