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
Secondary evolution of galaxies investigated by N-body simulations [PDF]
, 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 +1 more source
Calculation of Bayes Premium for Conditional Elliptical Risks [PDF]
, 2012 In this paper we discuss the calculation of the Bayes premium for conditionally elliptical multivariate risks. In our framework the prior distribution is allowed to be very general requiring only that its probability density function satisfies some ...
Hashorva, E. +3 more
core +1 more source
The Planetary Nebula Spectrograph elliptical galaxy survey: the dark matter in NGC 4494 [PDF]
, 2008 We present new Planetary Nebula Spectrograph observations of the ordinary elliptical galaxy NGC 4494, resulting in positions and velocities of 255 planetary nebulae out to seven effective radii (25 kpc).
N. Napolitano +14 more
semanticscholar +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
Dearth of dark matter or massive dark halo? Mass-shape-anisotropy degeneracies revealed by nmagic dynamical models of the elliptical galaxy NGC 3379 [PDF]
, 2008 Recent results from the Planetary Nebula Spectrograph (PNS) survey have revealed a rapidly falling velocity dispersion profile in the nearby elliptical galaxy NGC 3379, casting doubts on whether this intermediate-luminosity galaxy has the kind of dark ...
F. de Lorenzi +12 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
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 +5 more
semanticscholar +1 more source
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
doaj
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 +11 more
semanticscholar +1 more source