Advances in Astronomy and Space Physics, Volume 11, Issue 1-2, PP. 8-12 (2021)
doi: 10.17721/2227-1481.11.8-12
On the determination of elemental abundances in three stars
1Department of Physics & Astronomy, Macquarie University, Sydney, NSW 2109, Australia
2Astronomy, Astrophysics and Astrophotonics Research Centre, Macquarie University, Sydney, NSW 2109, Australia
3Main Astronomical Observatory of the NAS of Ukraine, 27 Zabolognoho Str., 03143, Kyiv, Ukraine
4Centre for Astrophysics Research, University of Hertfordshire, College Lane, Hatfield, Hertfordshire AL10 9AB, UK
2Astronomy, Astrophysics and Astrophotonics Research Centre, Macquarie University, Sydney, NSW 2109, Australia
3Main Astronomical Observatory of the NAS of Ukraine, 27 Zabolognoho Str., 03143, Kyiv, Ukraine
4Centre for Astrophysics Research, University of Hertfordshire, College Lane, Hatfield, Hertfordshire AL10 9AB, UK
Abstract
We analysed spectra of HD 126535 (K1 V), HD 127423 (G0 V) and HD 128356 (K2.5 IV) obtained with the spectrograph HARPS at the ESO La Silla 3.6 m telescope in Chile. Our synthetic spectral fitting procedure was firstly verified by analysing the spectra of the Solar and Arcturus, which were used as a template stars with well-known abundances. Comparison of obtained synthetic and observed spectra allowed us to identify 98 spectral lines of 10 chemical elements (Si, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni) within wavelength range 4500Å < λ < 7000Å. Abundances of each chemical element in the atmospheres of three studied stars were determined using the equivalent width of identified lines.
Keywords:
stars: fundamental parameters, stars: abundances, techniques: spectroscopic