Determination of atomic abundances of solar-type stars

Details Determination of atomic abundances of solar-type stars Determination of atomic abundances of solar-type stars

Mar 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aasp....2...20m&link_type=abstract

Advances in Astronomy and Space Physics, Vol. 2, p.20-22

Physics

Space Physics

Stars: Abundances, Methods: Numerical, Methods: Data Analysis

Scientific paper

We discuss the results of abundance determinations of the solar-type stars HD 1835 and HD 10700 using our new procedure. This procedure has the advantage of automated pipeline usage for large amounts of spectroscopic data, with minimal user input. It is based on the spectral synthesis method, where the best values are found with our own developed minimization technique. We reduce the number of free parameters in minimization space using the fit to the observed atomic iron lines. We calibrated our procedure using fits to the observed solar spectrum. Then we determined abundances in two solar-type stars, namely the metal-deficient star HD 10700 and the metal-rich star HD 1835. We found good agreement with previously published results. Thus, we aim to use this procedure for the abundance determination of solar-type stars, particularly planet hosting stars, where the knowledge of abundances is crucial for our understanding of their evolution and formation processes.

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