scholarly journals The Fundamental Plane of Cluster Elliptical Galaxies at z  = 1.25

2005 ◽  
Vol 620 (2) ◽  
pp. L83-L86 ◽  
Author(s):  
B. P. Holden ◽  
A. van der Wel ◽  
M. Franx ◽  
G. D. Illingworth ◽  
J. P. Blakeslee ◽  
...  
Keyword(s):  
Elliptical Galaxies ◽  
Fundamental Plane

scholarly journals MERGERS IN GALAXY GROUPS. II. THE FUNDAMENTAL PLANE OF ELLIPTICAL GALAXIES

2015 ◽  
Vol 803 (2) ◽  
pp. 78 ◽  
Author(s):  
Dan Taranu ◽  
John Dubinski ◽  
H. K. C. Yee
Keyword(s):  
Elliptical Galaxies ◽  
Fundamental Plane ◽  
Galaxy Groups

scholarly journals The Tilt of the Fundamental Plane of Elliptical Galaxies: Dynamical and Structural Effects

1996 ◽  
Vol 171 ◽  
pp. 403-403
Author(s):  
B. Lanzoni ◽  
L. Ciotti ◽  
A. Renzini
Keyword(s):  
Dark Matter ◽  
Velocity Dispersion ◽  
Elliptical Galaxies ◽  
Stellar Mass ◽  
Fine Tuning ◽  
Structural Effects ◽  
Fundamental Plane ◽  
Systematic Trend ◽  
Radial Anisotropy ◽  
Light Profiles

We explore several structural and dynamical effects on the projected velocity dispersion as possible causes of the fundamental plane (FP) tilt of elliptical galaxies (Ciotti, Lanzoni & Renzini, 1995). Specifically, we determine the size of the systematic trend along the FP in the orbital radial anisotropy, in the dark matter (DM) content and distribution relative to the bright matter, and in the shape of the light profile that would be needed to produce the tilt, under the assumption of a constant stellar mass to light ratio. Spherical, non rotating, two-components models are constructed, where the light profiles resemble the R1/4 law. For these we can exclude orbital anisotropy as the origin of the tilt, while a systematic increase in the DM content and/or concentration may formally produce it. Also a suitable variation of the light profile can produce the desired effect, and there may be some observational hints supporting this possibility. However, fine tuning is always required in order to reproduce the tilt, while preserving the tightness of the galaxies distribution about the FP.

scholarly journals The Evolution of Galaxies in Clusters

2003 ◽  
Vol 208 ◽  
pp. 237-244 ◽  
Author(s):  
John Dubinski ◽  
Dan Koranyi ◽  
Margaret Geller
Keyword(s):  
Spiral Galaxies ◽  
Dynamical Evolution ◽  
Elliptical Galaxies ◽  
Diffuse Light ◽  
Fundamental Plane ◽  
Numerical Investigations ◽  
Evolution Of Galaxies ◽  
Density Relationship ◽  
Velocity Dispersions

We report on recent numerical investigations of the dynamical evolution of galaxies in clusters. Simulations of spiral galaxies falling into forming clusters show the development of the morphology-density relationship and the formation of regular and giant elliptical galaxies. The regular elliptical merger remnants end up in a fundamental plane very similar to the observed relation. The giant ellipticals have much in common with their real counterparts but their central velocity dispersions are too high. We also quantify the amount and distribution of diffuse light in clusters.

scholarly journals The Manifold of Elliptical Galaxies

1987 ◽  
Vol 127 ◽  
pp. 79-88
Author(s):  
S. Djorgovski
Keyword(s):  
Galaxy Formation ◽  
Surface Brightness ◽  
Velocity Dispersion ◽  
Elliptical Galaxies ◽  
Morphological Parameters ◽  
Strong Regularity ◽  
Fundamental Plane ◽  
Global Properties ◽  
Error Bars ◽  
Intrinsic Scatter

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-bars only. This is indicative of a strong regularity in the process of galaxy formation. However, all morphological parameters which describe the shape of the distribution of light, and reflect dynamical anisotropies of stars, are completely independent from each other, and independent of the fundamental plane. The M/L ratios show only a small intrinsic scatter in a luminosity range spanning some four orders of magnitude; this suggests a constant fraction of the dark matter contribution in elliptical galaxies.

A Fundamental Plane Relation for the X-Ray Gas in Normal Elliptical Galaxies

2005 ◽  
Vol 633 (1) ◽  
pp. L21-L24 ◽  
Author(s):  
Steven Diehl ◽  
Thomas S. Statler
Keyword(s):  
Elliptical Galaxies ◽  
Fundamental Plane ◽  
X Ray
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