Results 51 to 60 of about 500,059 (233)
Stable models of elliptical galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2003 26 ...
Guo, Yan, Rein, Gerhard
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The Astrophysical Journal, 2022 Most stellar-dynamical determinations of the masses of nearby supermassive black holes (SMBHs) have been obtained with the orbit superposition technique under the assumption of axisymmetry.
Matthew E. Quenneville +2 more
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Estimating turbulent velocities in the elliptical galaxies NGC 5044 and NGC 5813 [PDF]
, 2012 Context. The interstellar and intra-cluster medium (ICM) in giant elliptical galaxies and clusters of galaxies is often assumed to be in hydrostatic equilibrium.
J. D. Plaa +7 more
semanticscholar +1 more source
TESTING YUKAWA-LIKE POTENTIALS FROM f(R)-GRAVITY IN ELLIPTICAL GALAXIES [PDF]
, 2012 We present the first analysis of extended stellar kinematics of elliptical galaxies where a Yukawa-like correction to the Newtonian gravitational potential derived from f(R)-gravity is considered as an alternative to dark matter.
N. Napolitano +4 more
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Gravitational Lensing by Elliptical Galaxies [PDF]
Symposium - International Astronomical Union, 2005 The probability that high-redshift quasars are gravitationally-lensed by intervening galaxies increases rapidly with the cosmological constant, ΩΛ0 (whilst being only weakly dependent on the density parameter, Ωm0), and the low number of lenses observed implies that ΩΛ0 ≲ 0.7 (e.g. Kochanek 1996).
Mortlock, DJ, Webster, RL
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The Hβ Index and the Ages of Old Stellar Systems [PDF]
Journal of Astronomy and Space Sciences, 1998 The Hβ and some metal line indices, such as Mg2, Fe52, Fe53 of single-age and single-metallicity populations are computed based on the method of evolutionary population synthesis, with careful consideration of the variation of the horizontal-branch ...
Seok-Jin Yoon +2 more
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THE DARK HALO—SPHEROID CONSPIRACY AND THE ORIGIN OF ELLIPTICAL GALAXIES [PDF]
, 2012 Dynamical modeling and strong-lensing data indicate that the total density profiles of early-type galaxies are close to isothermal, i.e., ρtot∝rγ with γ ≈ −2.
R. Remus +6 more
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Galaxy Merging and the Fundamental Plane of Elliptical Galaxies [PDF]
, 2006 We present preliminary results of numerical simulations of dissipationless merging of stellar systems, aimed at exploring the consequences of merging between gas free, spheroidal systems. In particular, we study the dynamical and structural characteristics of hierarchical merging between equal mass stellar systems, and we compare the properties of the ...
Nipoti, Carlo +2 more
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Equilibrium Figures inside the Dark-Matter Ring and the Shapes of Elliptical Galaxies
Open Astronomy, 2015 We solve the general problem of the theory of equilibrium figures and analyze two classes of liquid rotating gravitating figures residing inside a gravitating ring or torus.
Kondratyev B. P. +2 more
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MINOR MERGERS AND THE SIZE EVOLUTION OF ELLIPTICAL GALAXIES [PDF]
, 2009 Using a high-resolution hydrodynamical cosmological simulation of the formation of a massive spheroidal galaxy we show that elliptical galaxies can be very compact and massive at high redshift in agreement with recent observations.
T. Naab, P. Johansson, J. Ostriker
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