We present the detection of nuclear stellar discs in the low-luminosity elliptical galaxies NGC 4458 and NGC 4478, which are known to host a kinematically-decoupled core. Using archival HST imaging, and available absorption line-strength index data based on ground-based spectroscopy, we investigate the photometric parameters and the properties of the stellar populations of these central structu...

We study the stability of poloidal magnetic fields anchored in a thin accretion disc. The two-dimensional hydrodynamics in the disc plane is followed by a grid-based numerical simulation including the vertically integrated magnetic forces. The 3–dimensional magnetic field outside the disc is calculated in a potential field approximation from the magnetic flux density distribution in the disc. F...

Abstract The essential need for expert, fully trained electrochemists in the successful application of subject is illustrated with several examples including use rotating electrodes and impedance spectroscopy where techniques “black box” mode non-experts likely to lead disappointment or embarrassment.