Results 31 to 40 of about 3,622,393 (232)
Dynamical regularities in rotating galaxies [PDF]
Proceedings of the International Astronomical Union, 2019 AbstractGalaxies are observed to obey a strict set of dynamical scaling relations. We review these relations for rotationally supported disk galaxies spanning many decades in mass, surface brightness, and gas content. The behavior of these widely varied systems can be summarized with a handful of empirical laws connected by a common acceleration scale.
Stacy McGaugh +3 more
openaire +2 more sources
Modified Baryonic Dynamics: two-component cosmological simulations with light sterile neutrinos [PDF]
, 2014 In this article we continue to test cosmological models centred on Modified Newtonian Dynamics (MOND) with light sterile neutrinos, which could in principle be a way to solve the fine-tuning problems of the standard model on galaxy scales while ...
Angus, GW +4 more
core +3 more sources
Integral field spectroscopy with SINFONI of VVDS galaxies I. Galaxy dynamics and mass assembly at 1.2 < z < 1.6 [PDF]
, 2009 Context. Identifying the main processes of galaxy assembly at high redshifts is still a major issue in understanding galaxy formation and evolution at early epochs in the history of the Universe. Aims.
B. Epinat +9 more
semanticscholar +1 more source
Cluster galaxy dynamics and the effects of large-scale environment [PDF]
, 2010 Advances in observational capabilities have ushered in a new era of multi-wavelength, multi-physics probes of galaxy clusters and ambitious surveys are compiling large samples of cluster candidates selected in different ways.
M. White, Joanne Cohn, R. Smit
semanticscholar +1 more source
The Astronomical Journal, 2023 We report VLA B-configuration observations of the H i 21 cm line on the close disk galaxy pair NGC 5595 and NGC 5597. At the angular resolution of the observations, ∼7.″1 × 4.″2, while most of the H i 21 cm in NGC 5595 and NGC 5597 has the same extent as
J. Antonio Garcia-Barreto +1 more
doaj +1 more source
No need for dark matter: resolved kinematics of the ultra-diffuse galaxy AGC 114905 [PDF]
, 2021 We present new H i interferometric observations of the gas-rich ultra-diffuse galaxy AGC 114905, which previous work, based on low-resolution data, identified as an outlier of the baryonic Tully-Fisher relation.
P. E. M. Piña +5 more
semanticscholar +1 more source
Dynamical Friction on Satellite Galaxies [PDF]
Publications of the Astronomical Society of Japan, 2006 Abstract For a rigid model satellite, Chandrasekhar’s dynamical friction formula describes the orbital evolution quite accurately, when the Coulomb logarithm is chosen appropriately. However, it is not known if the orbital evolution of a real satellite with the internal degree of freedom can be described by the dynamical friction formula.
Fujii, Michiko +2 more
openaire +2 more sources
The Stability of Some Galaxy Disks is Still Perplexing
The Astrophysical Journal, 2023 The problem of how some disk galaxies avoid forming bars remains unsolved. Many galaxy models having reasonable properties continue to manifest vigorous instabilities that rapidly form strong bars and no widely accepted idea has yet been advanced to ...
J. A. Sellwood, R. G. Carlberg
doaj +1 more source
Dynamics of the radio galaxy 3C 449 [PDF]
, 1998 The definitive version is available at www.blackwell-synergy.com. Copyright Blackwell Publishing DOI : 10.1046/j.1365-8711.1998.01535.xWe present ROSAT PSPC observations of the twin-jet radio galaxy 3C449.
Birkinshaw, M. +2 more
core +2 more sources
Galaxy Dynamics: Secular Evolution and Accretion [PDF]
Proceedings of the International Astronomical Union, 2010 Recent results are reviewed on galaxy dynamics, bar evolution, destruction and re-formation, cold gas accretion, gas radial flows and AGN fueling, minor mergers. Some problems of galaxy evolution are discussed in particular, exchange of angular momentum,
F. Combes
semanticscholar +1 more source