Results 41 to 50 of about 507,375 (292)
On the Formation of Elliptical Galaxies [PDF]
The Astrophysical Journal, 1975 Simple collapse and violent relaxation models produce sharply cut off envelopes with ϱ(r) ∝ r–4, whereas actual elliptical galaxies have more extended envelopes approximately given by ϱ(r) ∝ r–3 as implied by Hubble's Law. Numerical models are presented, showing that when cosmological infall effects are included, galaxies are produced with more ...
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The Astrophysical Journal, 2023 Observational evidence and many numerical simulations show the existence of winds (i.e., uncollimated outflows) in the accretion systems of elliptical galaxy centers.
Razieh Ranjbar, Shahram Abbassi
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The size evolution of elliptical galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2014 11 pages, 8 figures, 1 table, submitted to ...
Lizhi Xie +8 more
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Mechanical AGN feedback: controlling the thermodynamical evolution of elliptical galaxies [PDF]
, 2012 A fundamental gap in the current understanding of galaxies concerns the thermodynamical evolution of ordinary, baryonic matter. On the one hand, radiative emission drastically decreases the thermal energy content of the interstellar plasma (ISM ...
M. Gaspari, F. Brighenti, P. Temi
semanticscholar +1 more source
The Manifold of Elliptical Galaxies [PDF]
Symposium - International Astronomical Union, 1987 Global properties of elliptical galaxies, such as the luminosity, radius, projected velocity dispersion, projected luminosity density, etc., form a two-dimensional family. This “fundamental plane” of elliptical galaxies can be defined by the velocity dispersion and mean surface brightness, and its thickness is presently given by the measurement error ...
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The Manifold of Elliptical Galaxies [PDF]
Symposium - International Astronomical Union, 1983 The significant number of dimensions of the manifold is two. Notwithstanding the contamination of the second dimension by projection effects, there are arguments for an intrinsic variation.
F.-Th. Lentes, P. Brosche
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Clustercentric Distance or Local Density? It Depends on Galaxy Morphology
The Astrophysical Journal, 2023 Determining which between projected local density and distance from the cluster center plays a major role in regulating morphological fractions in clusters is a longstanding debate.
Benedetta Vulcani +8 more
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Multiple minor mergers: formation of elliptical galaxies and constraints for the growth of spiral disks [PDF]
, 2007 Multiple, sequential mergers are unavoidable in the hierarchical build-up picture of galaxies, in particular for the minor mergers that are frequent and highly likely to have occured several times for most present-day galaxies.
Athanassoula +62 more
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THE CARNEGIE-IRVINE GALAXY SURVEY. III. THE THREE-COMPONENT STRUCTURE OF NEARBY ELLIPTICAL GALAXIES [PDF]
, 2012 Motivated by recent developments in our understanding of the formation and evolution of massive galaxies, we explore the detailed photometric structure of a representative sample of 94 bright, nearby elliptical galaxies, using high-quality optical images
Song Huang +17 more
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Tracing Galaxy Evolution by Their Present-Day Luminosity Function
Open Astronomy, 2011 Galaxy luminosity functions are derived for different morphological types and various colors of galaxies, to trace the evolutionary effects which a priori should be different for void and supercluster galaxies.
Tempel E.
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