In the past decade, a consensus has emerged regarding the nature of classical Be stars:
They are very rapidly rotating main sequence B stars, which, through a still unknown, but …

Recent results for classical Be stars are reviewed and links to general astrophysics are
presented. Classical Be stars are B‐type stars close to the main sequence that exhibit line …

Context. High-mass X-ray binaries (HMXBs) are a particular class of high-energy sources
that require multi-wavelength observational efforts to be properly characterised. New …

PHOEBE 2 is a Python package for modeling the observables of eclipsing star systems, but
until now it has focused entirely on the forward model—that is, generating a synthetic model …

We present a new edition of the catalogue of high-mass X-ray binaries in the Galaxy. The
catalogue contains source name (s), coordinates, finding chart, X-ray luminosity, system …

Context. About 20% of all B-type stars are classical Be stars–stars whose spectra imply the
presence of a circumstellar decretion disk. The disk phenomenon is strongly correlated with …

Massive stars play a major role in the evolution of their host galaxies and serve as important
probes of the distant Universe. It has been established that the majority of massive stars …

We investigate an interesting new class of high-mass X-ray binaries (HMXBs) with long
orbital periods (P orb> 30 days) and low eccentricities (e≲ 0.2). The orbital parameters …

Rapid rotation is a fundamental characteristic of classical Be stars and a crucial property
allowing for the formation of their circumstellar disks. Past evolution in a mass and angular …

There is mounting evidence that as many as∼ 1000 neutron stars (NSs) may be present in
some of the richest globular clusters in the Galaxy, which perhaps amounts to more than …