ABSTRACT Stellar binaries represent a substantial fraction of stellar systems, especially among young objects. Accordingly, play an important role in setting the architecture large number protoplanetary discs. Binaries coplanar and polar orientations with respect to circumbinary disc are stable configurations could induce non-axisymmetric structures dust gas distributions. In this work, we sugg...

Two nearby stars, HD 128311 and HD 82943, are believed to host pairs of Jupiter-like planets involved in a strong first order 2:1 mean motion resonance. In this work we reanalyze available radial velocity (RV) measurements and demonstrate that it is also possible to explain the observed RV variations of the parents stars as being induced by a pair of Trojan planets. We show that these Trojan co...

We report new calculations of the physical properties of a quark-diquark plasma. A vacuum contribution is taken into account and is responsible for the appearance of a stable state at zero pressure and at a baryon density of about 2.2 times the nuclear matter density in this model. The resulting equation of state was used to integrate numerically the Tolman-Oppenheimer-Volkoff equations. The ma...

In the absence of an active dynamo, purely poloidal magnetic field configurations are unstable to large-scale dynamical perturbations and ultimately reconnect away on Alfvénic timescales. Nevertheless, there are a number of classes of stars, including Ap stars, white dwarfs, and neutron stars which are thought to not contain active dynamos and yet do exhibit significant, large scale, surface ma...

This review describes the properties of hadronic phases of dense matter in compact stars. The theory is developed within the method of real-time Green’s functions and is applied to study of baryonic matter at and above the saturation density. The non-relativistic and covariant theories based on continuum Green’s functions and the T -matrix and related approximations to the selfenergies are revi...