Results 41 to 50 of about 500,059 (233)
The formation history of elliptical galaxies [PDF]
, 2005 We take advantage of the largest high-resolution simulation of cosmic structure growth ever carried out - the Millennium Simulation of the concordancecold dark matter (CDM) cosmogony - to study how the star formation histories, ages and metallicities of ...
G. Lucia +4 more
semanticscholar +1 more source
The ‘Photometric Plane’ of elliptical galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2002 The Sersic r^(1/n) index n of an elliptical galaxy (or bulge) has recently been shown to correlate strongly (r=0.8) with a galaxy's central velocity dispersion. This index could therefore prove extremely useful and cost-effective (in terms of both telescope time and data reduction) for many fields of extragalactic research.
openaire +3 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
Mechanical AGN feedback: controlling the thermodynamical evolution of elliptical galaxies [PDF]
, 2012 A fundamental gap in the current understanding of galaxies concerns the thermodynamical evolution of ordinary, baryonic matter. On the one hand, radiative emission drastically decreases the thermal energy content of the interstellar plasma (ISM ...
M. Gaspari, F. Brighenti, P. Temi
semanticscholar +1 more source
Fundamental Plane of Elliptical Galaxies in f(R) Gravity: The Role of Luminosity
Atoms, 2018 The global properties of elliptical galaxies are connected through the so-called fundamental plane of ellipticals, which is an empirical relation between their parameters: effective radius, central velocity dispersion and mean surface brightness within ...
Vesna Borka Jovanović +3 more
doaj +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 Astrophysical Journal, 2023 Observational evidence and many numerical simulations show the existence of winds (i.e., uncollimated outflows) in the accretion systems of elliptical galaxy centers.
Razieh Ranjbar, Shahram Abbassi
doaj +1 more source
Dwarf elliptical galaxies as ancient tidal dwarf galaxies [PDF]
, 2012 The formation of tidal dwarf galaxies (TDGs) is triggered by the encounters of already existing galaxies. Their existence is predicted from numerical calculations of encountering galaxies and is also well documented with observations.
J. Dabringhausen, P. Kroupa
semanticscholar +1 more source
THE STELLAR HALOS OF MASSIVE ELLIPTICAL GALAXIES [PDF]
, 2012 We use the Mitchell Spectrograph (formerly VIRUS-P) on the McDonald Observatory 2.7 m Harlan J. Smith Telescope to search for the chemical signatures of massive elliptical galaxy assembly.
J. Greene +4 more
semanticscholar +1 more source
Two ten-billion-solar-mass black holes at the centres of giant elliptical galaxies [PDF]
Nature, 2011 Observational work conducted over the past few decades indicates that all massive galaxies have supermassive black holes at their centres. Although the luminosities and brightness fluctuations of quasars in the early Universe suggest that some were ...
N. McConnell +7 more
semanticscholar +1 more source