Results 91 to 100 of about 3,788 (174)

Elliptical Galaxies and Bulges of Disc Galaxies: Summary of Progress and Outstanding Issues [PDF]

, 2016
This is the summary chapter of a review book on galaxy bulges. Bulge properties and formation histories are more varied than those of ellipticals. I emphasize two advances: 1 - "Classical bulges" are observationally indistinguishable from ellipticals, and like them, are thought to form by major galaxy mergers.
openaire   +3 more sources

Galaxy Merger Statistics And Inferred Bulge-to-disk Ratios In Cosmological Sph Simulations

, 2006
This is the pre-published version harvested from ArXiv. The published version is located at http://iopscience.iop.org/0004-637X/647/2/763/We construct merger trees for galaxies identified in a cosmological hydrodynamic simulation and use them to ...
Keres, D, Weinberg, DH, Maller, AH, Dave, R, Katz, N   +4 more
core   +1 more source

Infrared Properties of the Halo, Bulge and Disk of the Edge-On Galaxy NGC 7814

, 2009
Highly resolved images of the edge-on galaxy NGC 7814 from 2MASS and Spitzer were used to extract the morphologies and spectral energy distributions (SEDs) of the disk, bulge and halo components of this galaxy over a wavelength range from 1.25 to 24 μm ...
Simmat, Ellen
core   +2 more sources

A massive quiescent galaxy at redshift 4.658. [PDF]

Nature, 2023
Carnall AC, McLure RJ, Dunlop JS, McLeod DJ, Wild V, Cullen F, Magee D, Begley R, Cimatti A, Donnan CT, Hamadouche ML, Jewell SM, Walker S.   +12 more
europepmc   +1 more source

The millennium galaxy catalogue: Galaxy bimodality

, 2006
Galaxy bimodality is caused by the bulge-disc nature of galaxies as opposed to two distinct galaxy classes. This is evident in the colour-structure plane which clearly shows that elliptical galaxies (bulge-only) lie in the red compact peak and late-type ...
Jochen Liske (16219886), Alister Graham (18926479), Simon P. Driver (16045052)   +2 more
core   +1 more source

Universal scaling laws and density slopes for dark matter haloes. [PDF]

Sci Rep, 2023
Xu Z.
europepmc   +1 more source

Merger History of Galaxies and Disk+Bulge Formation

, 2009
We discuss the transitions of galaxy morphologies within the CDM paradigm under the assumption of bulge formation in mergers and disk growth via cooling of gas and subsequent star formation. Based on the relative importance of these two competing processes it is possible to make predictions on the expected morphological mix of galaxies.
openaire   +3 more sources

Secondary evolution of galaxies investigated by N-body simulations

, 2008
In the ΛCDM cosmology, merging is one of the most important physical processes that drives the formation and evolution of galaxies. In the present work, we use N-body techniques to investigate some of currently open issues related to the formation and ...
Coppola, Giuseppina
core  

Galaxy evolution as a function of mass and environment: giant and dwarf galaxies in superclusters and in the field

, 2008
It has been known for decades that local galaxies can be broadly divided into two distinct populations (e.g. Hubble 1926, 1936; Morgan 1958; de Vaucouleurs 1961).
Gargiulo, Adriana
core  

A Milky Way-like barred spiral galaxy at a redshift of 3. [PDF]

Nature, 2023
Costantin L, Pérez-González PG, Guo Y, Buttitta C, Jogee S, Bagley MB, Barro G, Kartaltepe JS, Koekemoer AM, Cabello C, Corsini EM, Méndez-Abreu J, de la Vega A, Iyer KG, Bisigello L, Cheng Y, Morelli L, Arrabal Haro P, Buitrago F, Cooper MC, Dekel A, Dickinson M, Finkelstein SL, Giavalisco M, Holwerda BW, Huertas-Company M, Lucas RA, Papovich C, Pirzkal N, Seillé LM, Vega-Ferrero J, Wuyts S, Yung LYA.   +32 more
europepmc   +1 more source