Results 61 to 70 of about 143,457 (288)
Sinking satellites and the heating of galaxy discs [PDF]
Monthly Notices of the Royal Astronomical Society, 1999 We have carried out a set of self-consistent N-body simulations to study the interaction between disc galaxies and merging satellites with the aim of determining the disc kinematical changes induced by such events. We explore a region of the parameter space embracing satellites with different masses and internal structure and orbits of various ...
Simon D. M. White +3 more
openaire +4 more sources
SOME PECULIARITIES OF THE RADIAL GAS DISTRIBUTION IN GALACTIC DISC
Odessa Astronomical Publications, 2017 This paper reports on the theoretical investigation of evolution of the Galaxy. The spiral arms and radial gas flows can be considered as some kind of indicators of the dynamical processes in the disc. Investigation the surface density of gas.
M. V. Dzyubenko
doaj +1 more source
Progress in Understanding the Nature of SS433
Universe, 2021 SS433 is the first example of a microquasar discovered in the Galaxy. It is a natural laboratory for studies of extraordinarily interesting physical processes that are very important for the relativistic astrophysics, cosmic gas dynamics and theory of ...
Anatol Cherepashchuk
doaj +1 more source
Smaller stellar disc scale lengths in rich environments [PDF]
, 2019 We investigate the dependence of stellar disc scale lengths on environment for a sample of Sloan Digital Sky Survey Data Release 7 galaxies with published photometric bulge-disc decompositions. We compare disc scale lengths at fixed bulge mass for galaxies in an isolated field environment to galaxies in X-ray rich and X-ray poor groups.
arxiv +1 more source
Dynamical friction in disc galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 1993 The force of dynamical friction on a softened point mass moving in a circular orbit inside a particle disc is studied theoretically and by means of numerical simulations. We derive an improved analytic estimate of the dynamical friction taking into account the effects of corotation and Lindblad resonances.
B. Sundelius +2 more
openaire +2 more sources
Chiral Engineered Biomaterials: New Frontiers in Cellular Fate Regulation for Regenerative Medicine
Advanced Functional Materials, EarlyView.Chiral engineered biomaterials can selectively influence cell behaviors in regenerative medicine. This review covers chiral engineered biomaterials in terms of their fabrication methods, cellular response mechanisms, and applications in directing stem cell differentiation and tissue function.
Yuwen Wang +5 more
wiley +1 more source
РЕНТГЕНОВСКОЕ ИЗЛУЧЕНИЕ ГАЛАКТИК БЕЗ АКТИВНЫХ ЯДЕР
Odessa Astronomical Publications, 2011 We perfirmed cross-correlation of SDSS galaxies and X-ray sources from 2XMMi catalogue. We selected galaxies with strong NII[6583] and OIII[5007] lines to divide them to starburst galaxies and AGNs.
A. B. Тугай +1 more
doaj +1 more source
Reports in Advances of Physical Sciences, 2020 It is an unsolved mystery that the rotation velocity of a galactic disc is same at any radial distances. The presence of dark matter is expected, but not observed.
Shigeto Nagao
doaj +1 more source
The halo shape and evolution of polar disc galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2012 We examine the properties and evolution of a simulated polar disc galaxy. This galaxy is comprised of two orthogonal discs, one of which contains old stars (old stellar disc), and the other, containing both younger stars and the cold gas (polar disc) of the galaxy.
Alexander Knebe +12 more
openaire +9 more sources
Mimicking Symmetry‐Breaking Einstein Ring by Optical Lens
Advanced Photonics Research, EarlyView.This article uses an optical lens to emulate the gravitational lensing effect and observe the Einstein ring (ER) patterns. The symmetry‐breaking ER, i.e., Einstein cross, is observed utilizing a rotation‐symmetry‐breaking hemi‐ellipsoid lens. Deformed Einstein cross patterns induced by noncollinearly alignment of the light source–lens–observer are ...
Jun‐Liang Duan +5 more
wiley +1 more source