Results 1 to 10 of about 85,185 (266)
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
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
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
Disk Galaxies Are Self-similar: The Universality of the H i-to-Halo Mass Ratio for Isolated Disks
The Astrophysical Journal Letters, 2023 Observed scaling relations in galaxies between baryons and dark matter global properties are key to shed light on the process of galaxy formation and on the nature of dark matter.
Marie Korsaga +9 more
doaj +1 more source
A Morphological-type dependence in the mu_0-log(h) plane of Spiral galaxy disks [PDF]
, 2001 We present observational evidence for a galaxy `Type' dependence to the location of a spiral galaxy's disk parameters in the mu_0-log(h) (central disk surface-brightness - disk scale-length) plane.
Alister W. Graham +8 more
core +2 more sources
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
doaj +1 more source
On the Decline of Star Formation during the Evolution of Galaxies
The Astrophysical Journal, 2023 Cosmological simulations predict that during the evolution of galaxies, the specific star formation rate continuously decreases. In a previous study we showed that generally this is not caused by the galaxies running out of cold gas but rather a decrease
Adelheid Teklu +4 more
doaj +1 more source
, 2000 This review addresses recent developments in the field of disk galaxy warps. Both results from a new HI survey of edgeon disk galaxies, and of simulations of the interaction between a disk+halo and an orbiting satelite, will be discussed.Comment: paper ...
Garcia, Inigo, Kuijken, Konrad
core +3 more sources
General Physical Properties of Gamma-Ray-emitting Radio Galaxies
The Astrophysical Journal Supplement Series, 2023 We study the radio galaxies with known redshifts detected by the Fermi satellite after 10 yr of data (4FGL-DR2). We use a one-zone leptonic model to fit the quasi-simultaneous multiwavelength data of these radio galaxies and study the distributions of ...
Yongyun Chen +6 more
doaj +1 more source
Relation Between the Thickness of Stellar Disks and the Relative Mass of Dark Halo in Galaxies [PDF]
, 2002 We consider a thickness of stellar disks of late-type galaxies by analyzing the R and K_s band photometric profiles for two independent samples of edge-on galaxies.
A. V. Khoperskov +37 more
core +2 more sources