A Shock Model for Quasars and Active Galactic Nuclei
First order Fermi acceleration is an efficient mechanism to produce relativistic particles in strong astrophysical shocks. The authors have developed a model...
A short-period sub-Earth orbiting Proxima Centauri
The discovery of a planetary candidate orbiting the habitable zone of our closest neighbor, Proxima Centauri (Gl 551), shook the planetary community as few...
A Shortcut to Calculate SPAM Limb-darkening Coefficients
We release a new grid of stellar limb-darkening coefficients (LDCs, using the quadratic, power-2 and claret-4 laws) and intensity profiles for the Kepler, U, B...
A simulated regolith medium for multi-wavelength studies
Effects arising from the small-scale surface structure are significant in remote studies of regolith surfaces on atmosphereless solar system bodies, such as the...
A SINFONI view of circum-nuclear star-forming rings in spiral galaxies
We present near-infrared (H- and K-band) SINFONI integral-field observations of the circumnuclear star formation rings in five nearby spiral galaxies. We made...
We will present first results from a recent study of circum-nuclear star formation in nearby spiral galaxies, undertaken with the SINFONI integral-field...
A single, complete, and coherent seismic solution for five delta Scuti stars belonging to the Praesepe cluster
The present paper discusses the seismic modelling of five δ Scuti stars belonging to the Praesepe cluster. Linear analysis is confronted with observations...