Search Results - "Portinari, L"

Towards stellar effective temperatures and diameters at 1 per cent accuracy for future surveys by Casagrande, L., Portinari, L., Glass, I. S., Laney, D., Silva Aguirre, V., Datson, J., Andersen, J., Nordström, B., Holmberg, J., Flynn, C., Asplund, M.

“…The apparent size of stars is a crucial benchmark for fundamental stellar properties such as effective temperatures, radii and surface gravities. While…”
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The colours of the Sun by Holmberg, Johan, Flynn, Chris, Portinari, Laura

“…We compile a sample of Sun-like stars with accurate effective temperatures, metallicities and colours (from the ultraviolet to the near-infrared). A crucial…”
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The Formation of Fossil Galaxy Groups in the Hierarchical Universe by D’Onghia, E, Sommer-Larsen, J, Romeo, A. D, Burkert, A, Pedersen, K, Portinari, L, Rasmussen, J

“…We use a set of 12 high-resolution N-body/hydrodynamical simulations in the ACDM cosmology to investigate the origin and formation rate of fossil groups (FGs),…”
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On the mass-to-light ratio and the initial mass function in disc galaxies by Portinari, L., Sommer-Larsen, J., Tantalo, R.

“…A low mass-to-light (M/L) ratio for the stellar component of spiral galaxies (M/L≲ 1 in the I band) is advocated by various dynamical arguments and by recent…”
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Can a standard initial mass function explain the metal enrichment in clusters of galaxies? by PORTINARI, L, MORETTI, A, CHIOSI, C, SOMMER-LARSEN, J

“…It is frequently debated in literature whether a "standard" initial mass function (IMF)-meaning an IMF of the kind usually adopted to explain the chemical…”
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Simulating galaxy clusters – I. Thermal and chemical properties of the intracluster medium by Romeo, A. D., Sommer-Larsen, J., Portinari, L., Antonuccio-Delogu, V.

“…We have performed a series of N-body/hydrodynamical (treesph) simulations of clusters and groups of galaxies, selected from a cosmological volume within a…”
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Δ Y/Δ Z from fine structure in the main sequence based on Hipparcos parallaxes by Pagel, B. E. J., Portinari, L.

“…The slope ΔY/ΔZ is a quantity of interest in relation to stellar evolution, the initial mass function and the determination of the primordial helium abundance…”
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Erratum: Simulating galaxy clusters – I. Thermal and chemical properties of the intracluster medium by Romeo, A. D., Sommer-Larsen, J., Portinari, L., Antonuccio-Delogu, V.

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Accurate fundamental parameters for lower main-sequence stars by Casagrande, Luca, Portinari, Laura, Flynn, Chris

“…We derive an empirical effective temperature and bolometric luminosity calibration for G and K dwarfs, by applying our own implementation of the Infrared Flux…”
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On the mass-to-light ratio of the local Galactic disc and the optical luminosity of the Galaxy by Flynn, Chris, Holmberg, Johan, Portinari, Laura, Fuchs, Burkhard, Jahreiß, Hartmut

“…We measure the volume luminosity density and surface luminosity density generated by the Galactic disc, using accurate data on the local luminosity function…”
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Mass to Light Ratio, Initial Mass Function, and Chemical Evolution in Disk Galaxies by Portinari, L., Sommer-Larsen, J., Tantalo, R.

“…Cosmological simulations of disk galaxy formation, when compared to the observed Tully–Fisher relation, suggest a low mass to light (M/L) ratio for the stellar…”
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Galaxy Formation: Cold Dark Matter, Feedback, and the Hubble Sequence by Sommer-Larsen, Jesper, Götz, Martin, Portinari, Laura

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Role of impurities in the 5.16 eV optical absorption band of Ge-doped silica by Martini, M., Meinardi, F., Paleari, A., Portinari, L., Spinolo, G.

“…The optical absorption band at 5.16 eV and the related photoluminescence were investigated in Ge-doped silica samples as a function of the Ge content to study…”
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Simulating galaxy clusters – III. Properties of the intracluster stars by Sommer-Larsen, Jesper, Romeo, Alessio D., Portinari, Laura

“…Cosmological (Λ-cold dark matter) treesph simulations of the formation and evolution of galaxy groups and clusters have been performed. The simulations invoke…”
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The Tully–Fisher relation and its evolution with redshift in cosmological simulations of disc galaxy formation by Portinari, Laura, Sommer-Larsen, Jesper

“…We present predictions on the evolution of the Tully–Fisher (TF) relation with redshift, based on cosmological N-body/hydrodynamical simulations of disc galaxy…”
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Primordial helium and delta-Y/delta-Z from H II regions and from fine structure in the main sequence based on Hipparcos parallaxes by Hog, E, Pagel, B E J, Portinari, L, Thejll, P A, MacDonald, J, Girardi, L

“…The primordial helium abundance, Y(P), is important for cosmology, and the ratio delta-Y/delta-Z of the changes relative to primordial abundances constrains…”
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Star formation and chemical evolution in smoothed particle hydrodynamics simulations: a statistical approach by Cesario, Lia, Laura, Portinari, Giovanni, Carraro

“…In smoothed particle hydrodynamics (SPH) codes with a large number of particles, star formation as well as gas and metal restitution from dying stars can be…”
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On the Galactic disc age–metallicity relation by Carraro, Giovanni, Ng, Yuen Keong, Portinari, Laura

“…A comparison is made between the age–metallicity relations obtained from four different types of studies: F and G stars in the solar neighbourhood, analysis of…”
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Simulating galaxy clusters—II. Global star formation histories and the galaxy populations by Romeo, Alessio D., Portinari, Laura, Sommer-Larsen, Jesper

“…We performed N -body + hydrodynamical simulations of the formation and evolution of galaxy groups and clusters in a Λ cold dark matter cosmology. The…”
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On the mass-to-light ratio and the initial mass function in disc galaxies by Portinari, L., Sommer-Larsen, J., Tantalo, R.

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