| Name | 067048 |
| Title | X-raying the colliding wind binary system HDE228766 |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0670480401 |
| 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 |