Abundance anomalies observed in globular cluster stars indicate pollution with material
processed by hydrogen burning. Two main sources have been suggested: asymptotic giant …

Context. Massive binaries hosting a black hole (OB+ BH) represent a critical phase in the
production of BH mergers in the context of binary evolution. In spite of this, such systems …

Precision astrometry at microarcsecond accuracy has applications for a wide range of
astrophysical problems. This paper is a study of the science questions that can be …

We present the first resolved images of the eclipsing binary β Lyrae, obtained with the
CHARA Array interferometer and the MIRC combiner in the H band. The images clearly …

Context. There is indirect evidence of non-conservative evolutions in Algols. However, the
systemic mass-loss rate is poorly constrained by observations and generally set as a free …

Development of analytic binary star models is discussed in historical and on-going
perspective, beginning with an overview of paradigm shifts, the merits of direct (rectification …

We analyze heating and cooling processes in accretion disks in binaries. For realistic
parameters of the accretion disks in close binaries (̇ M ≃ 10^-12-10^ 7 M_ ⊙/yr and α⋍ …

We present a qualitative analysis of possible changes in the structure of accretion disks that
occur in the transition from hot to cool disks. We suggest that an additional spiral-density …

We modelled the V-band light curve of β Lyrae (Lyr) with two stellar components plus an
optically thick accretion disc around the gainer assuming a semidetached configuration. We …

A brief history of investigations of Lyr, an emission‐line binary and one of the first ever
discovered Be stars is presented. A rather fast progress in the understanding of this …