Thorne–Żytkow objects (TŻO) are potential end products of the merger of a neutron star with
a non-degenerate star. In this work, we have computed the first grid of evolutionary models …

Thorne–Żytkow objects (TŻOs), hypothetical merger products in which a neutron star is
embedded in a stellar core, are traditionally considered steady-state configurations. Their …

This article presents the history of the Visual Survey Group (VSG)—a Professional-Amateur
(Pro-Am) collaboration within the field of astronomy working on data from several space …

Context. So far, stellar population studies have mainly focused on the evolution of single and
binary stars. Recent observations show that triple and higher order multiple star systems are …

We study the dynamics of a solar-type star orbiting around a black hole binary (BHB) in a
nearly coplanar system. We present a novel effect that can prompt a growth and significant …

Context. Common envelope evolution of a massive star and a neutron star companion has
two possible outcomes: formation of a short-period binary (a potential gravitational wave …

Hydrodynamic studies of stellar-mass compact objects (COs) in a common envelope (CE)
have shown that the accretion rate onto the CO is a few orders of magnitude below the …

Compact hierarchical triples (CHTs) are systems with the tertiary star orbiting the inner
binary in an orbit shorter than 1000 d. CHT with an eclipsing binary as its inner binary can …

We study the dynamics of a star orbiting a merging black-hole binary (BHB) in a coplanar
triple configuration. During the BHB's orbital decay, the system can be driven across the …

ABSTRACT TIC 470710327, a massive compact hierarchical triple-star system, was recently
identified by NASA's Transiting Exoplanet Survey Satellite. TIC 470710327 is comprised of a …