Results 41 to 50 of about 6,993,200 (327)
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
Exploring disc galaxy dynamics using integral field unit data [PDF]
, 2008 In order to test the basic equations believed to dictate the dynamics of disc galaxies, we present and analyse deep two-dimensional spectral data obtained using the PPAK integral field unit for the early-type spiral systems NGC 2273, NGC 2985, NGC 3898 ...
E. Noordermeer +2 more
semanticscholar +1 more source
Dynamics of galaxies with triaxial haloes [PDF]
New Astronomy, 1998 We study the stability of trajectories near the disk plane of galaxy models with a triaxial dark matter halo component. We also examine the effect of weak discreteness noise, rapidly rotating bar perturbations and weak dissipation on these trajectories.
El-Zant, Amr, Hassler, Bjoern
openaire +2 more sources
An hi study of the nearby dwarf galaxy ic 4710 [PDF]
, 2021 >Magister Scientiae - MScThis work aims to study the dark matter content of the nearby (7.38 Mpc) dwarf galaxy IC 4710 using the HI line observations from the Australia Telescope Compact Array (ATCA).
Mothogoane, Getrude Thando
core +1 more source
, 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 +3 more sources
Galaxy Dynamics Predictions in the Nonsymmetric Gravitational Theory [PDF]
, 1994 In the weak field approximation, the nonsymmetric gravitational theory (NGT) has, in addition to the Newtonian gravitational potential, a Yukawa-like potential produced by the exchange of a spin $1^+$ boson between fermions.
J. W. Moffat, I. Sokolov
semanticscholar +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
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
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
AGAMA: action-based galaxy modelling architecture [PDF]
Monthly notices of the Royal Astronomical Society, 2018 Agama is a publicly available software library for a broad range of applications in the field of stellar dynamics. It provides methods for computing the gravitational potential of arbitrary analytic density profiles or N-body models; orbit integration ...
E. Vasiliev
semanticscholar +1 more source