Results 11 to 20 of about 9,531 (227)
Investigation of the halo effect in the evolution of a nonstationary disk of spiral galaxies
Open Astronomy, 2023 In this article, we consider the problem of the evolution of the disk subsystem of galaxies, taking into account their halos. The global structure of the disk of galaxies strongly depends on the mass and shape of the halo.
Mannapova Kamola Alimdjanovna +1 more
exaly +2 more sources
On the Significance of the Thick Disks of Disk Galaxies
The Astrophysical Journal Supplement SeriesThick disks are a prevalent feature observed in numerous disk galaxies, including our own Milky Way. Their significance has been reported to vary widely, ranging from a few percent to 100% of the disk mass, depending on the galaxy and the measurement ...
Sukyoung K. Yi +10 more
doaj +5 more sources
Counter-Rotation in Disk Galaxies [PDF]
, 2014 Counter-rotating galaxies host two components rotating in opposite directions with respect to each other. The kinematic and morphological properties of lenticulars and spirals hosting counter-rotating components are reviewed. Statistics of the counter-rotating galaxies and analysis of their stellar populations provide constraints on the formation ...
CORSINI, ENRICO MARIA
openaire +4 more sources
Disk Galaxies and Galaxy Disks [PDF]
Publications of the Astronomical Society of the Pacific, 2000 The conference Galaxy Disks and Disk Galaxies, sponsored by the Vatican Observatory, was held in June 12-16, 2000 at the Pontifical Gregorian University, in Rome (Italy). The meeting hosted about 230 participants coming from 30 countries. The very full program consisted of 29 review papers, 34 invited talks, and more than 180 posters.
J, J. G. Funes S., Corsini, E. M.
+5 more sources
GALAXY DISKS ARE SUBMAXIMAL [PDF]
The Astrophysical Journal, 2011 We measure the contribution of galaxy disks to the overall gravitational potential of 30 nearly face-on intermediate-to-late-type spirals from the DiskMass Survey. The central vertical velocity dispersion of the disk stars, sigma(z,R=0), is related to the maximum rotation speed (Vmax) as sigma(z,R=0) ~ 0.26 Vmax, consistent with previous measurements ...
Bershady, Matthew A. +5 more
openaire +4 more sources
Quenching of Massive Disk Galaxies in the IllustrisTNG Simulation
The Astrophysical Journal, 2022 A rare population of massive disk galaxies have been found to invade the red sequence dominated by early-type galaxies. The formation and origins of these red/quenched massive disk galaxies have recently gained great interest.
Yingzhong Xu +6 more
doaj +1 more source
Estimating the Oblateness of Dark Matter Halos Using Neutral Hydrogen Velocity Dispersion
The Astrophysical Journal Letters, 2023 We derive the oblateness parameter q of the dark matter halo of a sample of gas-rich, face-on disk galaxies. We have assumed that the halos are triaxial in shape but their axes in the disk plane ( a and b ) are equal, so that q = c / a measures the halo ...
Mousumi Das +4 more
doaj +1 more source
The Local Galaxy Density and the Bulge-to-Disk Ratio of Disk Galaxies [PDF]
The Astrophysical Journal, 1995 LATEX file, 19 pages, figures available on ...
GIURICIN G. +4 more
openaire +3 more sources
Are Disks of Satellites Comprised of Tidal Dwarf Galaxies?
Galaxies, 2021 It was found that satellites of nearby galaxies can form flattened co-rotating structures called disks of satellites or planes of satellites. Their existence is not expected by the current galaxy formation simulations in the standard dark matter-based ...
Michal Bílek +3 more
doaj +1 more source
Annual Review of Astronomy and Astrophysics, 2011 The disks of disk galaxies contain a substantial fraction of their baryonic matter and angular momentum, and much of the evolutionary activity in these galaxies, such as the formation of stars, spiral arms, bars and rings, and the various forms of secular evolution, takes place in their disks. The formation and evolution of galactic disks are therefore
van der Kruit, P C, Freeman, Kenneth
openaire +4 more sources