Results 51 to 60 of about 662,695 (314)
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 ...
openaire +3 more sources
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
openaire +2 more sources
Decoding NGC 7252 as a blue elliptical galaxy [PDF]
A&A 671, A166 (2023), 2023 Elliptical galaxies with blue optical colours and significant star formation are hypothesised to be major merger remnants of gas-rich spiral galaxies or normal elliptical galaxies with a sudden burst of star formation. We present here a scenario in which blue elliptical galaxies identified in shallow imaging surveys may fail to recover faint features ...
arxiv +1 more source
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
semanticscholar +1 more source
The Outside‐In Formation of Elliptical Galaxies [PDF]
The Astrophysical Journal, 2006 15 pages, 10 figures, ApJ ...
Cristina Chiappini +3 more
openaire +4 more sources
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.
doaj +1 more source
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
doaj +1 more source
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
core +3 more sources
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. Plaa +7 more
semanticscholar +1 more source
Elliptical Galaxies with Shells [PDF]
International Astronomical Union Colloquium, 1984 A considerable number of otherwise normal elliptical galaxies show sharp edged, low surface brightness concentric features, often at very large radii from the parent galaxy. Features like this are visible in some of the photographs presented by Arp (1966).
openaire +2 more sources