First detection of phase-dependent colliding wind X-ray emission outside the Milky Way

Abstract

After having reported the detection of X-rays emitted by the peculiar system HD5980, we assess here the origin of this high-energy emission from additional X-ray observations obtained with XMM-Newton. This research provides the first detection of apparently periodic X-ray emission from hot gas produced by the collision of winds in an evolved massive binary outside the Milky Way. It also provides the first X-ray monitoring of a Luminous Blue Variable only years after its eruption and shows that the dominant source of the X-rays is not associated with the ejecta.

13 pages, 3 figures and 1 table, accepted for publication in ApJ (letters)

References in corpus (8)

• Wind clumping and the wind-wind collision zone in the Wolf-Rayet binary gamma Velorum
• A phase-resolved XMM-Newton Campaign on the Colliding Wind Binary HD 152248
• A dozen colliding wind X-ray binaries in the star cluster R136 in the 30Doradus region
• An X-ray investigation of the NGC346 field in the SMC (1) : the LBV HD5980 and the NGC346 cluster
• The first orbital solution for the massive colliding-wind binary HD93162 (=WR25)
• Towards an understanding of the Of?p star HD191612: Phase-resolved multiwavelength observations
• An X-ray investigation of the NGC 346 field in the SMC (3): XMM-Newton data
• FUSE observations of HD 5980: The wind structure of the eruptor

Cited by in corpus (18)

• X-Ray Spectroscopy of Stars
• Wolf-Rayet stars in the Small Magellanic Cloud: II. Analysis of the binaries
• 3D models of radiatively driven colliding winds in massive O+O star binaries - III. Thermal X-ray emission
• X-ray emission from interacting massive binaries: a review of 15 years of progress
• The supergiant B[e] star LHA 115-S 18 - binary and/or luminous blue variable?
• The first X-ray survey of Galactic Luminous Blue Variables
• Impact of orbital motion on the structure and stability of adiabatic shocks in colliding wind binaries
• Binarity at LOw Metallicity (BLOeM): a spectroscopic VLT monitoring survey of massive stars in the SMC
• The Shortest-period Wolf-Rayet binary in the Small Magellanic Cloud: Part of a high-order multiple system
• Observational properties of massive black hole binary progenitors
• The Tarantula Massive Binary Monitoring V. R 144: a wind-eclipsing binary with a total mass > 140 Msun
• X-ray diagnostics of massive star winds
• A changing wind collision
• Discovery of a new bona fide luminous blue variable in Norma
• X-ray emission of massive stars and their winds
• X-ray emission characteristics of two WR binaries : V444 Cyg and CD Cru
• LIN 358: A symbiotic binary accreting above the steady hydrogen fusion limit
• X-ray stellar population of the LMC