3 papers
astro-ph.SR2025
A high fraction of close massive binary stars at low metallicity
H. Sana, T. Shenar, J. Bodensteiner +74
At high metallicity, a majority of massive stars have at least one close stellar companion. The evolution of such binaries is subject to strong interaction processes, heavily impac…
astro-ph.SR2025
The Close Binary Properties of Massive Stars across Different Environments within the LMC
Maxwell Moe, M. S. Oey, Irene Vargas-Salazar +1
We analyze 4,859 O-stars in the OGLE-III photometric survey of the LMC, including 415 eclipsing binaries (EBs). After accounting for the geometrical probability of eclipses, the pe…
astro-ph.SR2025
The Discovery of Two Quadruple Star Systems with the Second and Third Shortest Outer Periods
Brian P. Powell, Guillermo Torres, Veselin B. Kostov +12
We present the discovery of two quadruple star systems -- TIC 285853156 and TIC 392229331 -- each consisting of two bound eclipsing binary stars. Among the most compact quadruples…