The effects of seeing on the parameters of the Sèrsic profile are studied in an analytical form using a Gaussian point spread function. The surface brightness...
The effects of seeing on Sérsic profiles - II. The Moffat PSF
The effects of seeing on Sérsic r1/n profile parameters are extensively studied using a Moffat function. This analytical approximation to the point spread...
The Electrical Current Density Vector in the Inner Penumbra of a Sunspot
We determine the entire electrical current density vector in a geometrical three-dimensional volume of the inner penumbra of a sunspot from an inversion of...
The energy-dependent temporal variation of the ROSAT PSPC gain.
The existence of systematic spectral-fit residuals in ROSAT PSPC spectra, and their dependence on time, is by now a well established fact. This paper describes...
The entropy of galaxy spectra: how much information is encoded?
The inverse problem of extracting the stellar population content of galaxy spectra is analysed here from a basic standpoint based on information theory. By...
The evolution of the binary population in globular clusters: a full analytical computation
I present a simplified analytical model that simulates the evolution of the binary population in a dynamically evolving globular cluster. A number of...
The First Billion Years project: proto-galaxies reionizing the Universe
The contribution of stars in galaxies to cosmic reionization depends on the star formation history in the Universe, the abundance of galaxies during...
The First Billion Years project: the escape fraction of ionizing photons in the epoch of reionization
Protogalaxies forming in low-mass dark matter haloes are thought to provide the majority of ionizing photons needed to reionize the Universe, due to their high...