The dependencies of the chemical element abundances in stellar atmospheres with respect to solar abundances on the second ionization potentials of the same elements were investigated using the published stellar abundance patterns for 1,149 G and K giants in the Local Region of the Galaxy. The correlations between the relative abundances of chemical elements and their second ionization potentials were calculated for groups of stars with effective temperatures between 3,764 and 7,725 K. Correlations were identified for chemical elements with second ionization potentials of 12.5 eV to 20 eV and for elements with second ionization potentials higher than 20 eV. For the first group of elements, the correlation coefficients were positive for stars with effective temperatures lower than 5,300 K and negative for stars with effective temperatures from 5,300 K to 7,725 K. The results of this study and the comparison with earlier results for hotter stars confirm the variations in these correlations with the effective temperature. A possible explanation for the observed effects is the accretion of hydrogen and helium atoms from the interstellar medium.

1. INTRODUCTION
2. ANALYSIS OF F-K STARS
3. DISCUSSION
REFERENCES

• Aizat Demessinova(Physico-Technical Department, Al Farabi Kazakh National University)
• Volodymyr Yushchenko(Main Astronomical Observatory of National Academy of Sciences of Ukraine/Department of Mathematics, Physics, Astronomy, Odessa National Maritime University)
• Dmytry Doikov(Department of Natural and Technical Sciences, Odessa National Maritime University)
• Vira Gopka(Astronomical Observatory, Odessa National University)
• Kyung Sook Jeong(DaeYang Humanity College, Sejong University)
• Pakakaew Rittipruk(National Astronomical Research Institute of Thailand)
• Yeuncheol Jeong(History Department, Sejong University) Corresponding Author
• Seunghyun Kim(Astrocamp Contents Research Institute)
• Alexander Yushchenko(Astrocamp Contents Research Institute/Astronomical Observatory, Odessa National University)