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4 papers · 2 filters
Planck intermediate results. XVI. Profile likelihoods for cosmological parameters
Planck Collaboration, P. A. R. Ade, N. Aghanim +180
We explore the 2013 Planck likelihood function with a high-precision multi-dimensional minimizer (Minuit). This allows a refinement of the Lambda-cdm best-fit solution with respect…
What have we learned from observational cosmology ?
Jean-Christophe Hamilton
We review the observational foundations of the CDM model, considered by most cosmologists as the standard model of cosmology. The Cosmological Principle, a key assumption of the…
Modelling narrow-line regions of active galaxies in the Sloan Digital Sky Survey - I.Sample selection and physical conditions
Zhitai Zhang, Yanchun Liang, François Hammer
We systematically determine the electron density and electron temperature of active galaxies and star-forming galaxies using spectroscopy from the SDSS DR7, while mainly focusing o…
A multiwavelength study of the Magellanic-type galaxy NGC 4449 - I. Modelling the spectral energy distribution, the ionization structure and the star formation history
O. Ł. Karczewski, M. J. Barlow, M. J. Page +16
[Abridged] We present an integrated photometric spectral energy distribution (SED) of the Magellanic-type galaxy NGC 4449 from the far-ultraviolet (UV) to the submillimetre, includ…