ELEMENTAL ABUNDANCE ANALYSIS OF AM STAR 15 VUL (HD 189849)

Abstract

Previously well studied Am star 15 Vul (HD 189849) is re-analysed as a part of a series of papers that will be published by Turkish and Russian scientists collaboration.
The data is taken by Russian Turkish Telescope (RTT150) which is operated at TÜBTAK National Observatory. The high resolution (R=40000) and high S/N (>100) spectra are analysed using mixed approach of the equivalent width analysis and the spectrum synthesis techniques. The synthetic spectrum approach is used in cases of the lines of an element are few for reliable
statistics and/or special atomic physics is required to take into account, such as hyperfine structure. Whenever the line is available, the oscillator strengths are tested on the solar spectrum, The analysis is based only on the LTE approach.