Search Publications
Eclipsing binaries in the era of Gaia
Holl, B.; Mowlavi, N.; Lecoeur-Taïbi, I. +3 more
The ESA mission Gaia is expected to detect a few million eclipsing binaries, most of them hitherto unknown. We present an outline of the processing of these objects in the Gaia Data Processing and Analysis Consortium pipeline, with an emphasis on the scientific validation of the software components.
The explosive life of massive binaries
Renzo, M.; Zapartas, E.
Massive stars are born predominantly as members of binary (or higher multiplicity) systems, and the presence of a companion can significantly alter their life and final fate. Therefore, any observed sample of massive stars or associated transients is likely to be significantly influenced by the effects of binarity. Here, we focus on the relationsh…
Close eclipsing binary BD And: a triple system
Perdelwitz, V.; Kundra, E.; Guenther, E. +5 more
BD And is a fairly bright (V = 10.8), active and close (P ∼ 0.9258 days) eclipsing binary. The cyclic variability of the apparent orbital period as well as third light in the light curves indicate the presence of an additional late-type component. The principal aim is the spectroscopic testing of the third-body hypothesis and determination of abso…
The importance of studying active giant stars in eclipsing binaries - and the role of citizen scientists in finding them
Derekas, A.; Vanderburg, A.; Rappaport, S. +2 more
Red giant stars with deep convection zones and rapid rotation maintain a strong surface magnetic field which may alter their observable astrophysical parameters. The resulting lower surface temperature due to spots makes the inferred masses and ages from evolutionary tracks uncertain. Eclipsing binaries having an active giant component can help in…
An investigation of low-mass-ratio EW systems from the Catalina Sky Survey
Papageorgiou, A.; Catelan, M.; Christopoulou, P. E. +1 more
We have conducted a survey of overcontact binary systems (EW) with mass ratio ≤ 0.25 from the Catalina Sky Survey (CSS) that are considered strong merger candidates and are probable progenitors of FK Com-type stars and blue stragglers. The discovery of such extreme mass ratio overcontact binaries is vital to resolve the critical mass ratio ambigui…