Results 101 to 110 of about 53,883 (266)

THE ELLIPTICITIES OF GALAXIES IN GALAXY CLUSTERS OF DIFFERENT MORPHOLOGICAL TYPE

open access: yesOdessa Astronomical Publications, 2014
The distribution of galaxy ellipticities was analyzed for 207 rich PF galaxy clusters found in the Munster Red Sky Survey Galaxy Catalogue. Clusters with BM types from a comparison with the ACO catalogue were also classified on the new scheme.
E. A. Panko, P. Flin
doaj   +1 more source

A simple model of spiral galaxies from geometric optics

open access: yesAIP Advances
We propose a simple model of spiral galaxies based on the interference of gravitational waves. The interference is deduced from geometric optics analysis of the refractive index profiles that mimic the behavior of gravitational potentials −1/r and r2. We
Bogdan Szafraniec, James N. Blake
doaj   +1 more source

The SLUGGS Survey: Understanding Lenticular Galaxy Formation via Extended Stellar Kinematics

open access: yesGalaxies, 2017
We present the latest published and preliminary results from the SLUGGS Survey discussing the formation of lenticular galaxies through analysis of their kinematics.
Sabine Bellstedt
doaj   +1 more source

Stellar populations of seven early-type dwarf galaxies and their nuclei

open access: yes, 2009
Dwarf galaxies are the numerically dominating population in the dense regions of the universe. Although they seem to be simple systems at first view, the stellar populations of dwarf elliptical galaxies (dEs) might be fairly complex. Nucleated dEs are of
Babul   +13 more
core   +1 more source

ELLIPTICITIES OF ELLIPTICAL GALAXIES IN DIFFERENT ENVIRONMENTS

open access: yesThe Astrophysical Journal, 2016
ABSTRACT We studied the ellipticity distributions of elliptical galaxies in different environments. From the ninth data release of the Sloan Digital Sky Survey, we selected galaxies with absolute -band magnitudes between −21 and −22.
Cheng-Yu Chen   +2 more
openaire   +1 more source

Disks Controlling Chaos in a 3D Dynamical Model for Elliptical Galaxies

open access: yesOpen Astronomy, 2011
A 3D dynamical model with a quasi-homogeneous core and a disk component is used for the chaos control in the central parts of elliptical galaxy.
Zotos Euaggelos E.
doaj   +1 more source

The orientation of galaxy pairs with filamentary structures: dependence on morphology

open access: yes, 2018
Aims. With the aim of performing an analysis of the orientations of galaxy pair systems with respect to the underlying large-scale structure, we study the alignment between the axis connecting the pair galaxies and the host cosmic filament where the pair
Alonso, Sol   +5 more
core   +1 more source

Compact Elliptical Galaxies

open access: yes, 2015
In this thesis, a sample of nearby, compact, elliptical galaxies with high central stellar velocity dispersions are studied. By means of high quality photometric and spectroscopic observations, we analyse their structural properties and construct state-of-the-art orbit-based dynamical models to constrain their total mass budgets, including the ...
openaire   +2 more sources

Causal Discovery in Astrophysics: Unraveling Supermassive Black Hole and Galaxy Coevolution

open access: yesThe Astrophysical Journal
Correlation does not imply causation, but patterns of statistical association between variables can be exploited to infer a causal structure (even with purely observational data) with the burgeoning field of causal discovery.
Zehao Jin   +11 more
doaj   +1 more source

Elliptical Galaxies with Emission Lines from the Sloan Digital Sky Survey

open access: yes, 2005
We present the results of 11 elliptical galaxies with strong nebular emission lines during our study of star formation history along the Hubble sequence. After removing the dilution from the underlying old stellar populations by use of stellar population
Barger A J   +34 more
core   +1 more source

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