Chandra Observations of WR147 Reveal a Double X-ray Source
arXiv:0912.3554 · doi:10.1088/2041-8205/709/2/L119
Abstract
We report the first results from deep X-ray observations of the Wolf-Rayet binary system WR147 with the Chandra HETG. Analysis of the zeroth order data reveals that WR147 is a double X-ray source. The northern counterpart is likely associated with the colliding wind region, while the southern component is certainly identified with the WN star in this massive binary. The latter is the source of high energy X-rays (including the Fe K_alpha complex at 6.67 keV) whose production mechanism is yet unclear. For the first time, X-rays are observed directly from a WR star in a binary system.
15 pages, 3 figures, To Appear in The Astrophysical Journal Letters
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- X-Ray Spectroscopy of Stars
- X-ray Emission from Nitrogen-Type Wolf-Rayet Stars
- Evolutionary Status of SNR 1987A at the Age of Eighteen
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Cited by in corpus (13)
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- X-rays from Colliding Stellar Winds: the case of close WR+O binary systems
- Evolution of the Chandra CCD Spectra of SNR 1987A: Probing the Reflected-Shock Picture
- Wind collisions in three massive stars of Cyg OB2
- XMM-Newton Observations Reveal Very High X-ray Luminosity from the Carbon-rich Wolf-Rayet Star WR 48a
- Chandra Detects the Rare Oxygen-type Wolf-Rayet Star WR 142 and OB Stars in Berkeley 87
- Identification of a Population of X-ray Emitting Massive Stars in the Galactic Plane
- Chandra HETG Observations of the Colliding Stellar Wind System WR 147
- Bow shocks, bow waves, and dust waves. II. Beyond the rip point
- A Radio Pinwheel Emanating from WR147
- X-rays from the oxygen-type Wolf-Rayet binary WR30a
- A global view on the colliding-wind binary WR 147