12 citations · 58 across the 15 of their papers we have counts for
16 papers
Combining astrometry with pulsar timing: the first joint analysis of very low frequency gravitational waves
Lorenzo Filipello, William Beordo, Volodymyr Akhmetov +2
The pHz to sub-nHz GW regime remains largely unexplored but is crucial for mapping the early inspiral stage of SMBHBs and probing early-Universe physics. Astrometry and pulsar timi…
The solar Galactocentric distance and local kinematic parameters from Gaia DR3 using Bottlinger's equations
D. V. Odynets, V. S. Akhmetov, S. I. Denyshchenko
The solar Galactocentric distance, , together with the local kinematic parameters of the Milky Way, provides fundamental constraints on the Galactic structure and rotation. Th…
Global m=1 slow mode in near-Keplerian self-gravitating torus: applications to stellar nuclear disks and AGN molecular tori
Elena Bannikova, Volodymyr Akhmetov, Peter Berczik +3
Global m=1 asymmetries are observed in many self-gravitating astrophysical systems and are often interpreted as large-scale slow modes in near-Keplerian potentials. Prominent examp…
Low-Frequency Stochastic Gravitational-Wave Background in Gaia DR3 catalog
V. Akhmetov, L. Filipello, M. Crosta +4
We investigate the potential to detect low-frequency gravitational waves (GWs) through their imprints on the proper motions of distant quasars observed by the Gaia mission. Using a…
Galaxy rotation curve based on RGB stars from the Gaia DR3 catalogue
P. N. Fedorov, A. M. Dmytrenko, V. S. Akhmetov +8
In this paper, we construct a detailed circular velocity curve of the Milky Way out to 20 kpc based on the radial component of the Jeans equation in cylindrical coordinates, assumi…
Spatial orientation and shape of the velocity ellipsoids of the Gaia DR3 giants and subgiants in the Galactic plane
A. M. Dmytrenko, P. N. Fedorov, V. S. Akhmetov +8
We present the results of determining the parameters characterizing the shape and orientation of residual velocity ellipsoids from the Gaia DR3 red giants and subgiants. We show th…
Determining the parameters of the spiral arms of the Galaxy from kinematic tracers based on Gaia DR3 data
S. I. Denyshchenko, P. N. Fedorov, V. S. Akhmetov +2
We present the results of determining the parameters of the spiral arms of the Galaxy using the stars Gaia DR3, whose absolute magnitude is < 4, and which allow tracing spira…
The vertex coordinates of the Galaxy's stellar systems according to the Gaia DR3 catalogue
A. M. Dmytrenko, P. N. Fedorov, V. S. Akhmetov +2
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 position…
Machine learning technique for morphological classification of galaxies from the SDSS. III. Image-based inference of detailed features
V. Khramtsov, I. B. Vavilova, D. V. Dobrycheva +5
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 exploit…
Mapping the kinematic parameters of the Galaxy from the Gaia EDR3 red giants and sub-giants
P. N. Fedorov, V. S. Akhmetov, A. B. Velichko +2
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…
Kinematics of the Milky Way from the Gaia EDR3 red giants and sub-giants
P. N. Fedorov, V. S. Akhmetov, A. B. Velichko +2
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 ~EDR3 catalogue. The twel…
Analysis of modern astrometric catalogues in the Gaia era
V. S. Akhmetov, P. N. Fedorov, V. S. Tsvetkova +1
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 sy…
Fast coordinate cross-match tool for large astronomical catalogue
Volodymyr Akhmetov, Artem Dmytrenko, Sergii Khlamov
In this paper we presented the algorithm designed to efficient coordinate cross-match of objects in the modern massive astronomical catalogues. Preliminary data sort in the existed…
Testing stellar proper motions of the TGAS using data of the HSOY, UCAC5 and PMA catalogues
P. N. Fedorov, V. S. Akhmetov, A. B. Velichko
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…
Determining the Orientation Parameters of the ICRS/UCAC2 System Using the Kharkov Catalog of Absolute Stellar Proper Motions
V. V. Bobylev, P. N. Fedorov, A. T. Bajkova +1
The absolute proper motions of about 275 million stars from the Kharkov XPM catalog have been obtained by comparing their positions in the 2MASS and USNO--A2.0 catalogs with an epo…
Subdwarfs and white dwarfs from the 2MASS, Tycho-2, XPM and UCAC3 catalogues
George A. Gontcharov, Anisa T. Bajkova, Peter N. Fedorov +1
The photometry from 2MASS, UCAC3 and SuperCosmos catalogues together with the proper motions from the Tycho-2, XPM and UCAC3 catalogues are used to select the all-sky samples of 34…