Zobrazeno 1 - 10
of 62
pro vyhledávání: '"Akhmetov, V. S."'
We present the results of determining the parameters of the spiral arms of the Galaxy using the stars Gaia DR3, whose absolute magnitude is $M_G$ < 4, and which allow tracing spiral arms at large distances from the Sun. As tracers of spiral arms, we
Externí odkaz:
http://arxiv.org/abs/2308.14021
A new kinematic model of the Galaxy: analysis of the stellar velocity field from Gaia Data Release 3
Autor:
Akhmetov, V. S., Bucciarelli, B., Crosta, M., Lattanzi, M. G., Spagna, A., Fiorentin, P. Re, Bannikova, E. Yu.
Publikováno v:
MNRAS, 2024
This work presents the results of a kinematic analysis of the Galaxy that uses a new model as applied to the newest available Gaia data. We carry out the Taylor decomposition of the velocity field up to second order for 18 million high luminosity sta
Externí odkaz:
http://arxiv.org/abs/2307.08527
We present the results of determining the coordinates of the vertices of various stellar systems, the centroids of which are located in the Galactic plane. To do this, the positions, parallaxes, proper motions, and radial velocities of red giants and
Externí odkaz:
http://arxiv.org/abs/2301.00203
Autor:
Khramtsov, V., Vavilova, I. B., Dobrycheva, D. V., Vasylenko, M. Yu., Melnyk, O. V., Elyiv, A. A., Akhmetov, V. S., Dmytrenko, A. M.
Publikováno v:
Space Science and Technology, 2022
This paper follows series of our works on the applicability of various machine learning methods to the morphological galaxy classification (Vavilova et al., 2021, 2022). We exploited the sample of 315776 SDSS DR9 galaxies with absolute stellar magnit
Externí odkaz:
http://arxiv.org/abs/2209.12194
We present the results of a kinematic analysis of red giants and subgiants whose centroids are in the plane of our Galaxy. For this, the positions, parallaxes, proper motions, and radial velocities of these stars from the $Gaia$ EDR3 catalog were use
Externí odkaz:
http://arxiv.org/abs/2205.09381
We present the results of the kinematic investigations carried out with the use of spatial velocities of red giants and sub-giants containing in the $Gaia$~EDR3 catalogue. The twelve kinematic parameters of the Ogorodnikov--Milne model have been deri
Externí odkaz:
http://arxiv.org/abs/2107.13979
We investigate of the systems of proper motions of stars in the ground-based catalogues HSOY, UCAC5, GPS1 and PMA derived by combining with the Gaia DR1 space data. Assuming the systematic differences of stellar proper motions of two catalogues to be
Externí odkaz:
http://arxiv.org/abs/2104.00438
Autor:
Bannikova, E. Yu., Sergeyev, A. V., Akerman, N. A., Berczik, P. P., Ishchenko, M. V., Capaccioli, M., Akhmetov, V. S.
We have developed the dynamical model of a clumpy torus in an active galactic nucleus (AGN) and compared to recent ALMA observations. We present $N$-body simulations of a torus in the field of a supermassive black hole (SMBH), made of up to $N=10^5$
Externí odkaz:
http://arxiv.org/abs/2102.12130
We present an investigation of stellar proper motions of the TGAS catalogue and ground-based HSOY, UCAC5 and PMA catalogues derived by combining with the Gaia DR1 space data. This investigation concerns with only those stars of ground-based catalogue
Externí odkaz:
http://arxiv.org/abs/1712.07878
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