Results 21 to 30 of about 3,472,840 (257)
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
Galaxy Dynamics: Secular Evolution and Accretion [PDF]
, 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,
Francoise Combes, Combes, Françoise
core +1 more source
Probing the Nonlinear Density Wave Theory of Spiral Galaxies by Baryonic Tully–Fisher Relation
UniverseThe baryonic mass–velocity relation provides an important test of different galaxy dynamics models such as Lambda–cold dark matter (ΛCDM) and alternatives like Modified Newtonian Dynamics (MOND).
Miroslava Vukcevic +2 more
doaj +1 more source
On the dynamics of the Sagittarius dwarf galaxy [PDF]
Monthly Notices of the Royal Astronomical Society, 1995 We use numerical simulations to test the feasibility of the suggestion by Ibata et al. (1994) that the excess population of stars which they discovered in the Sagittarius region may be the disrupted remains of a dwarf spheroidal galaxy. We find that a Fornax-like model for the pre-disruption system can indeed reproduce the data.
Velazquez, H., White, S. D. M.
openaire +2 more sources
Frontiers in Astronomy and Space SciencesA novel axially symmetric metric is proposed to solve the Einstein field equations. This provides an analytical solution within the matter in the equatorial plane for any galaxy density profile.
Stephan Walrand
doaj +1 more source
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
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
, 2017 <p>This Galaxy Tour Builder web extension allows you to easily create new interactive tours for the Galaxy framework. You can record and replay any tour, update its content and preview your changes in live.
Durand, William +5 more
core +2 more sources
Kinematical Fluctuations Vary with Galaxy Surface Mass Density
The Astrophysical Journal Letters, 2023 The Galaxy inner parts are generally considered to be optically symmetric, as well as kinematically symmetric for most massive early-type galaxies. At the lower-mass end, many galaxies contain lots of small patches in their velocity maps, causing their ...
Ze-Hao Zhong +3 more
doaj +1 more source
Viral Genome Sequencing Tutorial
, 2018 <p>Datasets required for the Galaxy Training on Viral Genome Sequencing</p ...
Galaxy Training Network (8220705) +1 more
core +1 more source