CAOSP abstracts, Volume: 55, No.: 3, year: 2025

Author(s): Rauw, G.
Journal: Contributions of the Astronomical Observatory Skalnaté Pleso, vol. 55, no. 3, p. 75-80.
Date: 04/2025
Title: X-raying the wind interactions of massive binaries. What we have learned from 25 years of observations
Keyword(s): stars: early-type, stars: winds, X-rays: stars
Pages: 75 -- 80
DOI: https://doi.org/10.31577/caosp.2025.55.3.75
NASA ADS Abstract Service: 2025CoSka..55c..75R
Citation:
License: This work is licensed under a Creative Commons Attribution 4.0 International License

Abstract: The collision of radiatively-driven stellar winds in massive binary systems should produce a strong X-ray emission. This emission is expected to display a phase-locked modulation due to a changing orbital separation (in eccentric systems) and/or a changing optical depth along our line of sight towards the wind interaction region. The current generation of X-ray satellites allowed the study of a number of massive binaries. They notably demonstrated that not all O + O binaries are X-ray bright and that some systems display rather complex orbital variations. In this contribution, we highlight the properties of a few systems that were recently studied with XMM-Newton.