Among the hundreds of known hot Jupiters (HJs), only five have been found to companions on short-period orbits. Within this rare class multiple planetary systems, architecture WASP-47 is unique, hosting an HJ (planet -b) with both inner and outer sub-Neptunian mass companion (-e -d, respectively) as well additional non-transiting, long-period giant (-c). The small period ratio between planets -...

Context. Stellar occultation is a powerful technique that allows the determination of some physical parameters occulting object. The result depends on photometric accuracy, temporal resolution, and number chords obtained. Space telescopes can achieve high accuracy as they are not affected by atmospheric scintillation. Aims. Using ESA’s CHEOPS space telescope, we observed stellar transneptunian ...

While it is possible to check the energy performance of a given building by means of several available methods, the inverse problem of determining the optimum configuration given a desired performance is more difficult to solve. In the Mediterranean region this problem is more complex due to the following two reasons: the air-conditioning load is as important as the heating load, and the energy...

HD$\,$172555 is a young ($\sim$20$\,$Myr) A7V star surrounded by 10$\,$au wide debris disk suspected to be replenished partly collisions between large planetesimals. Small evaporating transiting bodies, exocomets, have also been detected in this system spectroscopy. After $\beta\,$Pictoris, another example of possibly witnessing phase heavy bombardment In such system, small bodies trace dynamic...

Context. TOI-2076 is a transiting three-planet system of sub-Neptunes orbiting bright ( G = 8.9 mag), young (340 ± 80 Myr) K-type star. Although validated planetary system, the orbits two outer planets were unconstrained as only non-consecutive transits seen in TESS photometry. This left 11 and 7 possible period aliases for each. Aims. To reveal true these long-period planets, precise photometr...

Context. Hot subdwarfs experienced strong mass loss on the Red Giant Branch (RGB) and are now hot small He-burning objects. Aims. In this project we aim to perform a transit survey in all available light curves of from space-based telescopes (Kepler, K2, TESS, CHEOPS), with our custom-made pipeline SHERLOCK, order determine occurrence rate planets around these stars, as function orbital period ...

Dynamic adaptability of operating system kernels is a hot topic of research projects al over the world. This paper presents the basics and some implemtation aspects of an object-oriented system architecture, the so-called class-object architecture , which was designed to support ne-grained dynamic adaptability in the CHEOPS operating system project. One central idea of the presented concept is ...