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astro-ph.SR2024
Study of the Cet Binary with Speckle Interferometric, Photometric and Spectroscopic Techniques
V. V. Dyachenko, I. A. Yakunin, R. M. Bayazitov +8
We present a refined speckle-interferometric orbit of a binary system Cet, with the main component studied based on the analysis of photometric and spectroscopic data, obtained…
astro-ph.SR2024★ 1 cited
On the surface distribution of chromium in Ap star HD 152564
I. S. Potravnov, T. A. Ryabchikova
The spectroscopic and photometric variability of magnetic Ap/Bp stars is caused by the surface inhomogeneities of their chemical composition (spots) that affect the structure of th…
astro-ph.SR2024
Non-LTE abundances of nitrogen in the Sun and reference A-F type stars
L. I. Mashonkina, T. A. Ryabchikova
A new model atom of nitrogen was developed using the energy levels of N I from laboratory measurements and also predicted in atomic structure calculations and the most up-to-date a…