Results 1 to 10 of about 102,930 (210)
GALAXY DYNAMICS IN CLUSTERS [PDF]
The Astrophysical Journal, 1995 We use high resolution simulations to study the formation and distribution of galaxies within a cluster which forms hierarchically. We follow both dark matter and baryonic gas which is subject to thermal pressure, shocks and radiative cooling.
Evrard, A. E. +3 more
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Galaxy groups and the modified dynamics [PDF]
The Astrophysical Journal, 1998 I estimate Modified-Dynamics (MOND), median M/L values for recently published catalogues of galaxy groups. While the median, Newtonian M/L values quoted for these catalogues are 110-200 solar units, the corresponding values for MOND are less than 10 ...
Begeman K. G. +3 more
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Dynamics of barred galaxies [PDF]
Reports on Progress in Physics, 1993 Some 30% of disc galaxies have a pronounced central bar feature in the disc plane and many more have weaker features of a similar kind. Kinematic data indicate that the bar constitutes a major non-axisymmetric component of the mass distribution and that the bar pattern tumbles rapidly about the axis normal to the disc plane.
Althea Wilkinson, J. A. Sellwood
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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
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Dynamical Blueprints for Galaxies [PDF]
The Astrophysical Journal, 2008 54 pages, 20 ...
Lawrence M. Widrow +2 more
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Dynamics of Companion Galaxies of Early-type Galaxies [PDF]
The Astrophysical Journal, 2020 Abstract We estimated the dynamical masses of 115 early-type galaxies (ETGs) by analyzing the dynamics of satellite and companion galaxies of these ETGs. We selected galaxies with absolute magnitudes between −22 and −25 in the K s -band from the Extragalactic Distance Database. We
Cheng-Yu Chen, Chorng-Yuan Hwang
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Dynamical models of the Galaxy [PDF]
EPJ Web of Conferences, 2012 I discuss the importance of dynamical models for exploiting survey data, focusing on the advantages of "torus" models. I summarize a number of applications of these models to the study of the Milky Way, including the determination of the peculiar Solar velocity and investigation of the Hyades moving group.
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Probing the Environment with Galaxy Dynamics [PDF]
, 2006 I present various projects to study the halo dynamics of elliptical galaxies. This allows one to study the outer mass and orbital distributions of ellipticals in different environments, and the inner distributions of groups and clusters themselves ...
A. Borriello +32 more
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DYNAMICAL FRICTION IN CUSPY GALAXIES [PDF]
The Astrophysical Journal, 2014 In this paper we treat the problem of the dynamical friction decay of a massive object moving in an elliptical galaxy with a cuspidal inner distribution of the mass density. We present results obtained by both self-consistent, direct summation, N-body simulations, as well as by a new semi-analytical treatment of dynamical friction valid in such cuspy ...
ARCA SEDDA, MANUEL +1 more
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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
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