Results 61 to 70 of about 510,650 (316)
The (galaxy-wide) IMF in giant elliptical galaxies: From top to bottom [PDF]
, 2013 Recent evidence based independently on spectral line strengths and dynamical modelling point towards a non-universal stellar Initial Mass Function (IMF), probably implying an excess of low-mass stars in elliptical galaxies with a high velocity dispersion.
C. Weidner +3 more
semanticscholar +1 more source
Cold gas in elliptical galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2001 We explore the evolution of the cold gas (molecular and neutral hydrogen) of elliptical galaxies and merger remnants ordered into a time sequence on the basis of spectroscopic age estimates. We find that the fraction of cold gas in early merger remnants decreases significantly for ~1-2Gyr, but subsequent evolution toward evolved elliptical systems sees
Georgakakis, Antonis +5 more
openaire +5 more sources
Dynamical Models of Spherical Galaxies with Massive Halo [PDF]
Journal of Astronomy and Space Sciences, 2003 Using the Schwarzschild's linear programming technique, we obtained the general solutions of the collisionless Bolzmann equation describing the spherical galaxy in dynamical equilibrium.
Mun-Suk Chun +2 more
doaj +1 more source
Abundance ratios in dwarf elliptical galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2017 We determine abundance ratios of 37 dwarf ellipticals (dEs) in the nearby Virgo cluster. This sample is representative of the early-type population of galaxies in the absolute magnitude range -19.0 < Mr < -16.0. We analyze their absorption line-strength indices by means of index-index diagrams and scaling relations and use the stellar population ...
Jesús Falcón-Barroso +21 more
openaire +10 more sources
The PN.S Elliptical Galaxy Survey: Data Reduction, Planetary Nebula Catalog, and Basic Dynamics for NGC 3379 [PDF]
, 2007 We present results from Planetary Nebula Spectrograph (PN.S) observations of the elliptical galaxy NGC 3379 and a description of the data reduction pipeline. We detected 214 planetary nebulae, of which 191 are ascribed to NGC 3379 and 23 to the companion
N. Douglas +14 more
semanticscholar +1 more source
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 Globular Cluster System of the Galaxy NGC 6876
Galaxies, 2017 We present preliminary results of the deep photometric study of the elliptical galaxy NGC 6876, located at the center of the Pavo group, and its globular cluster system.
Ana Inés Ennis +2 more
doaj +1 more source
Mayall II = G1 in M31: Giant Globular Cluster or Core of a Dwarf Elliptical Galaxy? [PDF]
, 2001 At the moment, only the anticorrelation of metallicity with age recently observed in ω Centauri suggests that this cluster enriched itself over a timescale of about 3 Gyr.
G. Meylan +7 more
semanticscholar +1 more source
The formation history of elliptical galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2006 We take advantage of the largest high-resolution simulation of cosmic structure growth ever carried out -- the Millennium Simulation of the concordance LambdaCDM cosmogony -- to study how the star formation histories, ages and metallicities of elliptical galaxies depend on environment and on stellar mass.
De Lucia, G. +4 more
openaire +4 more sources
ABSORPTION LINE GRADIENTS IN THE SPECTRUM OF AN ELLIPTICAL GALAXY NGC 5864A [PDF]
Journal of Astronomy and Space Sciences, 1999 The archival long-slit spectra, covering the wavelength range 4050 ~ 5150 Å, have been used to investigate the radial behavior of absorption line fea-tures (G4300, Fe4383, Ca4455, Fe4531, and Hβ) of an elliptical galaxy NGC 5846A.
Young-Jong Sohn +2 more
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