Search Results - "Mel’nik, A. M."

A two-component outer ring and Galactic spiral structure by Mel'nik, A. M., Rautiainen, P.

“…A model of the Galaxy with a ring R 1 R′2 can explain some large-scale morphological features of Galactic spiral structure. The Carina-Sagittarius arm could…”
Get full text

Kinematics of OB Associations and the First Data from the Gaia Satellite by Mel’nik, A. M., Dambis, A. K.

“…The first data release from the Gaia mission (Gaia DR1) is used to study kinematics of OB associations. The mean velocity dispersion in 18 OB associations…”
Get full text

Kinematics of OB-associations in Gaia epoch by Mel'nik, A. M., Dambis, A. K.

“…Abstract We use stellar proper motions from the Tycho-Gaia Astrometric Solution (TGAS) catalogue to study the kinematics of OB-associations. The TGAS proper…”
Get full text

Kinematics of the outer pseudorings and the spiral structure of the Galaxy by Mel’nik, A. M., Rautiainen, P.

“…The kinematics of the outer rings and pseudorings is determined by two processes: the resonance tuning and the gas outflow. The resonance kinematics is clearly…”
Get full text

Two-component outer ring and the observed galactic spiral structure by Mel'nik, A.M., Rautiainen, P.

“…We show that a model of the Galaxy with a two‐component outer ring of class R1R2 can explain many large‐scale morphological features of the galactic spiral…”
Get full text

Kinematics of OB-associations and the new reduction of the Hipparcos data by Mel'nik, A. M., Dambis, A. K.

“…The proper motions of OB-associations computed using the old and new reductions of the Hipparcos data are in good agreement with each other. The Galactic…”
Get full text

Straight segments in the galactic discs by Mel'nik, A. M., Rautiainen, P.

“…We study the properties of the straight segments forming in N-body simulations of the galactic discs. The properties of these features are consistent with the…”
Get full text

Outer pseudoring in the galaxy by Mel'nik, A M

“…The kinematics of the Sagittarius (R = 5.7 kpc),Carina (R = 6.5 kpc), Cygnus (R = 6.8 kpc), and Perseus (R = 8.2 kpc) arms suggests the existence of two spiral…”
Get full text

Evidence of the Galactic outer ring R1R2′ from young open clusters and OB-associations by Mel’nik, A. M., Rautiainen, P., Glushkova, E. V., Dambis, A. K.

“…The distribution of young open clusters in the Galactic plane within 3 kpc from the Sun suggests the existence of the outer ring R 1 R 2 ′ in the Galaxy. The…”
Get full text

Leading wave as a component of the spiral pattern of the galaxy by Mel'nik, A M

“…The spiral pattern of the Galaxy, identified by analyzing the kinematics of young stars within 3 kpc of the Sun, is Fourier decomposed into spiral harmonics…”
Get full text

Intrastructural Transformation of Water–Glacial Resources of Tsambagarav Ridge (Mongolian Altai) by Borodavko, P. S., Mel’nik, M. A., Volkova, E. S., Demberel, O.

“…Based on field expedition research and an analysis of high-resolution polychronous satellite imagery data carried out in the AlWaRes GIS environment, the…”
Get full text

Periodic pattern in the residual-velocity field of OB associations by Mel'nik, A M, Dambis, A K, Rastorguev, A S

“…An analysis of the residual-velocity field of OB associations within 3 kpc of the Sun has revealed periodic variations in the radial residual velocities along…”
Get full text

Galactic resonance rings: modelling of motions in the wide solar neighbourhood by Melnik, A M

“…ABSTRACT Models of the Galaxy with analytical Ferrers bars can reproduce the residual velocities of OB associations in the Sagittarius, Perseus and Local…”
Get full text

Internal motions in OB associations with Gaia DR2 by Melnik, A M, Dambis, A K

“…ABSTRACT We study the motions inside 28 OB associations with the use of Gaia DR2 proper motions. The average velocity dispersion calculated for 28 OB…”
Get full text

Classical Cepheids in the Galactic outer ring R1R ′2 by Mel'nik, A.M., Rautiainen, P., Berdnikov, L.N., Dambis, A.K., Rastorguev, A.S.

“…The kinematics and distribution of classical Cepheids within ∼3 kpc from the Sun suggest the existence of the outer ring R1R ′2 in the Galaxy. The optimum…”
Get full text

Factors Affecting the Wear Rate in Frictional Systems by Mel’nik, M. A.

“…The wear rate variation in frictional systems where several significant factors act is studied. Options for reducing the wear rate are explored…”
Get full text

Periodic changes in the morphology of the Galactic resonance rings by Melnik, A M, Podzolkova, E N, Dambis, A K

“…ABSTRACT We study the periodic enhancement of either trailing or leading segments of the resonance elliptical rings in the dynamical model of the Galaxy which…”
Get full text

Distance scale for high-luminosity stars in OB associations and in field with Gaia DR2. Spurious systematic motions by Melnik, A. M., Dambis, A. K.

“…We calculated the median parallaxes for 47 OB associations including at least 10 stars with known Gaia DR2 parallaxes. A comparison between trigonometric and…”
Get full text

Influence of the Galactic bar on the kinematics of the disc stars with Gaia EDR3 data by Melnik, A M, Dambis, A K, Podzolkova, E N, Berdnikov, L N

“…ABSTRACT A model of the Galaxy with the outer ring R1R2 can explain the observed distribution of the radial, VR, and azimuthal, VT, velocity components along…”
Get full text

Streaming motions of molecular clouds, ionized hydrogen, and OB stars in the Cygnus arm by Sitnik, T G, Mel'nik, A M, Pravdikova, V V

“…The radial velocity fields of molecular clouds, OB stars, and ionized hydrogen in the Cygnus arm (l 72°-8°) are analyzed. A gradientΔV^sub LSR^/Δlin the mean…”
Get full text