Results 11 to 20 of about 49,590 (221)

Dwarf elliptical galaxies

open access: yesThe Astronomy and Astrophysics Review, 1994
63p, uuencoded compressed postscript, 2/8 figs included, A&A Review in press, request paper copies from ferguson@stsci.edu, STScI ...
Ferguson, Henry C., Binggeli, Bruno
openaire   +4 more sources

Investigation of the Fundamental Plane Relationship For the Evolution of the Elliptical and Lenticular Galaxies [PDF]

open access: yesمجلة التربية والعلم
The Fundamental Plane relates the effective radius and surface brightness of an early-type galaxy to its velocity dispersion. It is important in understanding galaxy formation and evolution processes. The present work aims to investigate this relation as
Khalid Mohammed
doaj   +1 more source

Gravitational Lensing by Elliptical Galaxies [PDF]

open access: yesSymposium - 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
openaire   +4 more sources

Mass Dependence of Galaxy–Halo Alignment in LOWZ and CMASS

open access: yesThe Astrophysical Journal, 2023
We measure the galaxy-ellipticity (GI) correlations for the Sloan Digital Sky Survey Data Release 12 LOWZ and CMASS samples with the shape measurements from the DESI Legacy Imaging Surveys.
Kun Xu, Y. P. Jing, Hongyu Gao
doaj   +1 more source

A Preferential Growth Channel for Supermassive Black Holes in Elliptical Galaxies at z ≲ 2

open access: yesThe Astrophysical Journal, 2023
The assembly of stellar and supermassive black hole (SMBH) mass in elliptical galaxies since z ∼ 1 can help to diagnose the origins of locally observed correlations between SMBH mass and stellar mass.
Duncan Farrah   +14 more
doaj   +1 more source

Multiple minor mergers: formation of elliptical galaxies and constraints for the growth of spiral disks [PDF]

open access: yes, 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
core   +4 more sources

Clustercentric Distance or Local Density? It Depends on Galaxy Morphology

open access: yesThe 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
doaj   +1 more source

Tracing Galaxy Evolution by Their Present-Day Luminosity Function

open access: yesOpen 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.
doaj   +1 more source

Measurements of Far-UV Emission from Elliptical Galaxies at z=0.375 [PDF]

open access: yes, 1998
The ``UV upturn'' is a sharp rise in spectra of elliptical galaxies shortward of rest-frame 2500 A. It is a ubiquitous phenomenon in nearby giant elliptical galaxies, and is thought to arise primarily from low-mass evolved stars on the extreme horizontal
Buson L. M.   +9 more
core   +2 more sources

Compact Elliptical Galaxies [PDF]

open access: yesSymposium - International Astronomical Union, 1987
We summarize our present knowledge on low-mass high-surface brightness elliptical objects near massive galaxies that are often called M32-type or compact elliptical galaxies. The origin of the low mass of these objects is a controversial matter: is it intrinsic to their formation or produced, as classically believed, by tidal stripping from the massive
Jean-Luc Nieto, Philippe Prugniel
openaire   +1 more source

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