Results 41 to 50 of about 139,273 (95)

On the Formation of Tails in the Galactic Tidal Field

Open Astronomy, 2015
The trajectories of stars of a cluster moving in the Schuster-Plummer potential on a circular orbit in the Galactic plane (Bok’s problem) are investigated. The impact of initial conditions on stellar motions, in particular on the possibility of escape of
Davydenko A.
doaj   +1 more source

Tidal capture and repeating partial tidal disruption events of giant stars

Astronomy & Astrophysics
When an object is scattered near a supermassive black hole (SMBH), tidal oscillations excited within it reduce its orbital energy, leading to capture by the SMBH.
Wang Di, Wang Fa-Yin
doaj   +1 more source

Simulation of the Motion of Stars Escaping from the Galactic Center

Open Astronomy, 2015
Motions of stars escaping from the Galactic center are simulated. It is shown that the Galactic bar reduces the initial velocity needed to escape from the Galaxy.
Shirokova K. S.
doaj   +1 more source

Kinematical and dynamical properties of recently discovered bulge and disc star clusters with WINERED

Astronomy & Astrophysics
Context. Galactic globular clusters are a very important tool in explaining the characteristics of the Milky Way. Therefore it is essential to determine the kinematical and dynamical properties of the new star cluster candidates, especially at the low ...
Petralia Ilaria, Minniti Dante, Fernández-Trincado José G., Matsunaga Noriyuki, Taniguchi Daisuke, Saroon Sasi, Garro Elisa R., Sameshima Hiroaki, Otsubo Shogo, Sarugaku Yuki, Takeuchi Tomomi   +10 more
doaj   +1 more source

Mechanics of couple-stress fluid coatings [PDF]

, 1982
The formal development of a theory of viscoelastic surface fluids with bending resistance - their kinematics, dynamics, and rheology are discussed. It is relevant to the mechanics of fluid drops and jets coated by a thin layer of immiscible fluid with ...
Waxman, A. M.
core   +1 more source

The velocity field of the Scorpius-Centaurus OB association

Astronomy & Astrophysics
We present a nonparametric reconstruction of the three-dimensional velocity field of the Scorpius-Centaurus OB association (Sco-Cen). Using Gaia DR3 astrometry and radial velocities, we inferred the velocity field using information field theory on a 70 ×
Hutschenreuter S., Alves J., Posch L., Großschedl J., Piecka M., Miret-Roig N., Ratzenböck S., Swiggum C.   +7 more
doaj   +1 more source

Newtonian and modified newtonian gravitational simulation of spiral galaxies

Iraqi Journal of Physics, 2019
One of the most powerful tools for any stellar dynamics is the N-body simulation. In an N-body simulation the motion of N particles is followed under their mutual gravitational attraction.
Bushra A. Ahmed
doaj   +1 more source

Symbolic Dynamics, Mixing and Entropy in the Three-Body Problem

Open Astronomy, 2016
We use symbolic dynamics in the classic equal-mass free-fall three-body problem. Different methods for constructing symbolic sequences (in the process of numerical integration of trajectories) allow one to demonstrate (and illustrate on the Agekian ...
Mylläri A., Orlov V., Chernin A., Martynova A., Mylläri T.   +4 more
doaj   +1 more source

Dynamics of the Orthoglide parallel robot [PDF]

, 2009
Recursive matrix relations for kinematics and dynamics of the Orthoglide parallel robot having three concurrent prismatic actuators are established in this paper.
Chablat, Damien, Staicu, Stefan, Wenger, Philippe   +2 more
core   +2 more sources

How does the Mass Transport in Disk Galaxy Models Influence the Character of Orbits?

Open Astronomy, 2014
We explore the regular or chaotic nature of orbits of stars moving in the meridional (R, z) plane of an axially symmetric time-dependent disk galaxy model with a central, spherically symmetric nucleus. In particular, mass is linearly transported from the
Zotos Euaggelos E.
doaj   +1 more source