Results 81 to 90 of about 662,658 (321)
Chandra Observations of Nuclear Outflows in the Elliptical Galaxy NGC 4552 in the Virgo Cluster [PDF]
, 2006 We use a 54.4 ks Chandra observation to study nuclear outflow activity in NGC 4552 (M89), an elliptical galaxy in the Virgo Cluster. Chandra images in the 0.5-2 keV band show two ringlike features ~1.7 kpc in diameter in the core of NGC 4552, as reported
M. Machacek +3 more
semanticscholar +1 more source
Stable models of elliptical galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2003 26 ...
Gerhard Rein, Yan Guo
openaire +4 more sources
Fresh Activity in Old Systems: Radio AGN in Fossil Groups of Galaxies
, 2012 We present the first systematic 1.4 GHz Very Large Array radio continuum survey of fossil galaxy group candidates. These are virialized systems believed to have assembled over a gigayear in the past through the merging of galaxy group members into a ...
Bîrzan +25 more
core +1 more source
The ‘Photometric Plane’ of elliptical galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2002 To appear in MNRAS.
openaire +5 more sources
Weak homology of elliptical galaxies [PDF]
Astronomy & Astrophysics, 2002 We start by studying a small set of objects characterized by photometric profiles that have been pointed out to deviate significantly from the standard R^{1/4} law. For these objects we confirm that a generic R^{1/n} law, with n a free parameter, can provide superior fits (the best-fit value of n can be lower than 2.5 or higher than 10), better than ...
Bertin, G., Ciotti, L., Del Principe, M.
openaire +4 more sources
Radial Kinematics of Isolated Elliptical Galaxies [PDF]
, 2006 Ellipticals in very low density environments are extremely rare but hold important clues about galaxy formation and evolution. In this paper we continue our study of isolated elliptical galaxies, presenting results on the radial stellar kinematics for 13 isolated early-type galaxies.
arxiv +1 more source
Structural properties of dwarf elliptical galaxies and the connection with (ordinary) elliptical galaxies [PDF]
2005, IAU Colloquia 198, p.303-310, 2005 This article reviews the popular reasons for the belief that dwarf elliptical galaxies and (ordinary) elliptical galaxies are distinct and separate species. They include: light-profile shape (or similarly image concentration); the magnitude-central surface brightness diagram; the magnitude-effective surface brightness diagram (or similarly the ...
arxiv +1 more source
The Astrophysical Journal Letters, 2023 Minor mergers are thought to drive the structural evolution of massive quiescent galaxies; however, existing Hubble Space Telescope (HST) imaging is primarily sensitive to stellar mass ratios ≳1:10.
Katherine A. Suess +19 more
doaj +1 more source
Formation, Evolution and Properties of Isolated Field Elliptical Galaxies [PDF]
, 2010 [Abridged] We study the properties, evolution and formation mechanisms of isolated field elliptical galaxies. We create a mock catalogue of isolated field elliptical galaxies from the Millennium Simulation Galaxy Catalogue, and trace their merging histories.
arxiv +1 more source
Collisionless evaporation from cluster elliptical galaxies [PDF]
, 2003 We describe a particular aspect of the effects of the parent cluster tidal field (CTF) on stellar orbits inside cluster Elliptical galaxies. In particular we discuss, with the aid of a simple numerical model, the possibility that collisionless stellar ...
Adams +29 more
core +4 more sources