A dataset provided by the European Space Agency

Name 067048
Title X-raying the colliding wind binary system HDE228766


DOI https://doi.org/10.5270/esa-bun7g4k
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
Temporal Coverage 2011-05-05T01:30:38Z/2011-05-18T19:25:03Z
Version 17.56_20190403_1200
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.
Creator Contact https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk
Date Published 2012-09-10T00:00:00Z
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