Results 121 to 130 of about 2,114,962 (287)
, 2013 We investigate the effects of a cD galaxy's gravity and AGN heating of the host galaxy cluster. We consider a standard prescription for the hydrodynamics, with the structures determined by mass continuity, momentum and energy conservation equations in ...
Saxton, Curtis J., Wu, Kinwah
core +1 more source
On the Interaction in a Quartet of Galaxies
, 2015 3 pages, 1 figure, to appear in Astronomical Society of the Pacific (ASP) Conference Series "Astronomical Surveys and Big Data"
Yeghiazaryan, A. A. +2 more
openaire +2 more sources
Tidal Formation of Dark Matter Deficit Diffuse Galaxy NGC 1052-DF2 by SIDM
The Astrophysical JournalObservations have revealed a significant dark matter deficit in the ultradiffuse galaxy NGC 1052-DF2 (DF2). It is widely accepted that the formation of this unique galaxy can be attributed to the tidal stripping of its host galaxy, NGC 1052.
Zhao-Chen Zhang +2 more
doaj +1 more source
Dissipative N - body code for galaxy evolution
, 2000 The evolving galaxy is considered as a system of baryonic fragments embedded into the static dark nonbaryonic (DH) and baryonic (BH) halo and subjected to gravitational and viscous interactions.
Douphole B. +7 more
core +1 more source
Interacting Galaxies with MOND
, 2007 We compare N-body simulations performed in MOND with analogs in Newtonian gravity with dark matter (DM). We have developed a code which solves the Poisson equation in both gravity models. It is a grid solver using adaptive mesh refinement techniques, allowing us to study isolated galaxies as well as interacting galaxies.
Tiret, O., Combes, F.
openaire +2 more sources
A Multiwavelength Portrait of the 3C 220.3 Lensed System
The Astrophysical JournalThe 3C 220.3 system is a rare case of a foreground narrow-line radio galaxy (“galaxy A,” z _A = 0.6850) lensing a background submillimeter galaxy ( z _SMG = 2.221).
Sóley Ó. Hyman +12 more
doaj +1 more source
Modeling the Initial Conditions of Interacting Galaxy Pairs Using Identikit
, 2015 We develop and test an automated technique to model the dynamics of interacting galaxy pairs. We use Identikit (Barnes & Hibbard 2009, Barnes 2011) as a tool for modeling and matching the morphology and kinematics of the interacting pairs of equal-mass ...
Barnes, Joshua E. +3 more
core +1 more source
Bar-spheroid interaction in galaxies
The Astrophysical Journal, 1992 The secular evolution of barred galaxies is explored using N-body simulation and linear analysis. In particular, we examine the interaction between bars and spheroidal components of galaxies. According to our calculations, this interaction drives secular transfer of angular momentum from bars to spheroids, primarily through resonant coupling.
Hernquist, Lars, Weinberg, Martin D.
openaire +3 more sources
A Multiwavelength Approach to Constraining the Merger Properties of ACT-CL J0034.4+0225
The Astrophysical JournalACT-CL J0034.4+0225 is a previously unrecognized merging galaxy cluster at z = 0.38588 ± 0.00068. Our primary evidence is provided by a 21 ks Chandra image that shows two surface brightness peaks separated by ∼49″ (259 kpc) surrounded by an extended ...
Peter Doze +12 more
doaj +1 more source
The Astrophysical Journal Supplement Series, 1978 In this paper we investigate the effect of weak tidal interactions among galaxies in clusters. We obtain the Fokker-Planck coefficients for this process by making use of the impulse approximation. We assume that the outer regions of a galaxy are well described by isotropically distributed stellar orbits with small angular momenta.
openaire +2 more sources