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pro vyhledávání: '"Kovaleva, A."'
We investigate the existence and properties of open superclusters within 500 pc of the Sun, with a particular focus on a newly identified OSC, designated HC8. Utilizing Gaia-derived advanced astrometric data and star cluster catalogs, we identify and
Externí odkaz:
http://arxiv.org/abs/2412.13727
Autor:
Avdeeva, Aleksandra, Tan, Kefeng, Joshi, Santosh, Kovaleva, Dana, Singh, Harinder P., Luo, Ali, Malkov, Oleg
Despite having different astronomical characteristics, the studies of mira variables and ultra-cool dwarfs frequently show similar red colors, which could cause leading to photometric misclassification. This study uses photometric data from the WISE,
Externí odkaz:
http://arxiv.org/abs/2409.11266
Akademický článek
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Autor:
Amburg, Natalia, Kovaleva, Mariia
The icosahedron $I_4$ of genus 4 is a dessin d'enfant embedded in Bring's curve $\mathcal{B}$. The dessin $I_4$ is related in some sense to a regular icosahedron $I_0$ embedded in the complex Riemann sphere. In particular, decompositions of Belyi fun
Externí odkaz:
http://arxiv.org/abs/2405.07092
Autor:
Kovaleva, Dana A.
Publikováno v:
Astronomy Reports, 2023, Volume 67, Issue 9, p.938-950
The catalog of wide binary stars by El-Badry et al. (2021) [arXiv:2101.05282], created on the basis of Gaia EDR3 data and including more than a million pairs, was used to analyze Gaia DR3 data obtained independently for their components. By compariso
Externí odkaz:
http://arxiv.org/abs/2405.03457
Autor:
Ishchenko, Maryna, Kovaleva, Dana A., Berczik, Peter, Kharchenko, Nina V., Piskunov, Anatoly E., Polyachenko, Evgeny, Postnikova, Ekaterina, Just, Andreas, Borodina, Olga, Omarov, Chingis, Sobodar, Olexandr
In a previous paper using Gaia DR2 data, we demonstrated that the two closely situated open clusters Collinder 135 and UBC 7 might have formed together about 50 Myr ago. In this work, we performed star-by-star dynamical modelling of the evolution of
Externí odkaz:
http://arxiv.org/abs/2404.12255
Autor:
Bazarova, Alexandra, Kovaleva, Maria, Kuleshov, Ilya, Romanenkova, Evgenia, Stepikin, Alexander, Yugay, Alexandr, Mollaev, Dzhambulat, Kireev, Ivan, Savchenko, Andrey, Zaytsev, Alexey
Effective processing of financial transactions is essential for banking data analysis. However, in this domain, most methods focus on specialized solutions to stand-alone problems instead of constructing universal representations suitable for many pr
Externí odkaz:
http://arxiv.org/abs/2404.02047
Autor:
Kovaleva, Valeriya
We compute the average of a product of two shifted squares of the Riemann zeta on the critical line with shifts up to size $T^{3/2-\varepsilon}$. We give an explicit expression for such an average and derive an approximate spectral expansion for the
Externí odkaz:
http://arxiv.org/abs/2401.13725
This paper explores the role of energy-saving technologies and energy efficiency in the post-COVID era. The pandemic meant major rethinking of the entrenched patterns in energy saving and efficiency. It also provided opportunities for reevaluating en
Externí odkaz:
http://arxiv.org/abs/2312.11711
Transition metal oxides incorporating Jahn-Teller (JT) ions Mn3+ (3d4) in manganites and Cu2+ (3d9) in cuprates exhibit outstanding magnetic and electronic properties, including colossal magnetoresistance (CMR) and high-temperature superconductivity
Externí odkaz:
http://arxiv.org/abs/2312.03677