V342 Andromedae B is an eccentric-orbit eclipsing binary

摘要: We present a photometric and spectroscopic study of the visual binary V342 Andromedae. Visual components system have angular separations 3 arcseconds. obtained two data sets. An examination both A B component spectra reveals that is with an eccentric orbit. The orbital period, taken from Hipparcos Catalog, agrees period measured spectroscopically. also collected new set measurements. argument periastron close to 270 ◦ orbit eccentricity not seen in our data. About five years after first observations, was obtained. analysed apsidal motion, but we did find any significant changes orientation. Wilson-Devinney model calculated based on radial velocity curves. result shows very similar stars masses M1 = 1.27 ± 0.01 M� , M2 1.28 respectively. radii are R1 1.21 R� R2 1.25 Radial measurements A, most luminous star system, reveal no periodic variations. time eclipsing orbit’s circularization, which about orders magnitude shorter than estimated age system. discrepancies estimation can be explained by Kozai effect induced A. atmospheric parameters chemical abundances for pair, as well LSD profiles components, were high-resolution, well-exposed 2-m class telescope.