FUNDAMENTAL PARAMETERS OF THE ATMOSPHERES OF  SCT-TYPE STARS

Abstract

During 2006-2019, using the Russian-Turkish 1.5-meter telescope (TUBITAK National Observatory, Turkey) and 6-m BTA telescope of SAO RAS (Russia) the spectroscopic observations of a large sample of stars of the (siqma) Sct type-stars were carried out. At these observations a high-resolution spectra for 75 stars were obtained. In this work we present results of determinations the effective
temperatures and gravity for all studied stars on the basis of photometric indices of Johnson and Strömgren systems using empirical dependences.