Out of the ˜ 70 extragalactic sources known to emit in the Very High Energy band (VHE, E > 100GeV), only 5-6 are known to be Flat Spectrum Radio Quasars (FSRQs), and they are all found at intermediate or high redshifts. In this paper, we explore the conditions that trigger sub-TeV emission on this particular type of sources and we concentrate on

The majority of cataclysmic variable (CV) stars contain a stochastic noise component in their light curves, commonly referred to as flickering. This can significantly affect the morphology of CV eclipses and increases the difficulty in obtaining accurate system parameters with reliable errors through eclipse modelling. Here we introduce a new

We present a two-dimensional multi-component photometric decomposition of 404 galaxies from the Calar Alto Legacy Integral Field Area data release 3 (CALIFA-DR3). They represent all possible galaxies with no clear signs of interaction and not strongly inclined in the final CALIFA data release. Galaxies are modelled in the g, r, and i Sloan Digital

Multiple populations revealed in globular clusters (GCs) are important windows to the formation and evolution of these stellar systems. The metal-rich GCs in the Galactic bulge are an indispensable part of this picture, but the high optical extinction in this region has prevented extensive research. In this work, we use the high resolution near

High-resolution spectroscopy (R>100,000) is a robust and powerful tool for directly characterizing exoplanet atmospheres that is applicable to both transiting and non-transiting planets, as well as those with relatively large projected separation angles. In the infrared, the technique has unambiguously revealed the presence of complex molecules

We have conducted a near-infrared monitoring campaign at the UK Infrared Telescope of the Local Group spiral galaxy M 33 (Triangulum). On the basis of their variability, we have identified stars in the very final stage of their evolution, and for which the luminosity is more directly related to the birth mass than the more numerous less-evolved