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The PN.S Elliptical Galaxy Survey: a standard LCDM halo around NGC 4374?
N. R. Napolitano, A. J. Romanowsky, M. Capaccioli +10
As part of our current programme to test LCDM predictions for dark matter (DM) haloes using extended kinematical observations of early-type galaxies, we present a dynamical analysi…
Colour and stellar population gradients in galaxies
C. Tortora, N. R. Napolitano, V. F. Cardone +3
We discuss the colour, age and metallicity gradients in a wide sample of local SDSS early- and late-type galaxies. From the fitting of stellar population models we find that metall…
Stellar population gradients from cosmological simulations: dependence on mass and environment in local galaxies
C. Tortora, A. D. Romeo, N. R. Napolitano +4
The age and metallicity gradients for a sample of group and cluster galaxies from N-body+hydrodynamical simulation are analyzed in terms of galaxy stellar mass. Dwarf galaxies show…
Central dark matter trends in early-type galaxies from strong lensing, dynamics and stellar populations
C. Tortora, N. R. Napolitano, A. J. Romanowsky +1
We analyze the correlations between central dark matter (DM) content of early-type galaxies and their sizes and ages, using a sample of intermediate-redshift (z ~ 0.2) gravitationa…
Color and stellar population gradients in galaxies. Correlation with mass
C. Tortora, N. R. Napolitano, V. F. Cardone +3
We analyze the color gradients (CGs) of ~50000 nearby SDSS galaxies. From synthetic spectral models based on a simplified star formation recipe, we derive the mean spectral propert…
The central dark matter content of early-type galaxies: scaling relations and connections with star formation histories
Nicola R. Napolitano, Aaron J. Romanowsky, Crescenzo Tortora
We examine correlations between the masses, sizes, and star formation histories for a large sample of low-redshift early-type galaxies, using a simple suite of dynamical and stella…