|Title||X-raying the colliding wind binary system HDE228766|
|Author||Prof Gregor Rauw|
|Description||We propose to observe the interacting wind binary system HDE228766 at three carefully chosen orbital phases. This system hosts a rare Of-WN8ha transition object whose wind crashes onto the surface of its O7 companion. The X-ray brightness and the geometry of the system offer ideal conditions to probe the wind of the transition star: by comparing X-ray spectra taken at three phases, we will constrain its mass-loss rate, investigate the feedback of the X-ray emission on the ionization structure of the wind and study the impact of the wind interaction zone on the optical spectrum of the O7 companion.|
|Publication||No observations found associated with the current proposal|
|Instrument||EMOS1, EMOS2, EPN, OM, RGS1, RGS2|
|Mission Description||The European Space Agency's (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESA's second cornerstone of the Horizon 2000 Science Programme. It carries 3 high throughput X-ray telescopes with an unprecedented effective area, and an optical monitor, the first flown on a X-ray observatory. The large collecting area and ability to make long uninterrupted exposures provide highly sensitive observations.
Since Earth's atmosphere blocks out all X-rays, only a telescope in space can detect and study celestial X-ray sources. The XMM-Newton mission is helping scientists to solve a number of cosmic mysteries, ranging from the enigmatic black holes to the origins of the Universe itself. Observing time on XMM-Newton is being made available to the scientific community, applying for observational periods on a competitive basis.
|Publisher And Registrant||European Space Agency|
|Credit Guidelines||European Space Agency, 2012-09-10T00:00:00Z, 067048, 17.56_20190403_1200. https://doi.org/10.5270/esa-bun7g4k|