|Title||GT Observations of Hot Stars: WR 25|
|Author||Dr Albert Brinkman|
|Description||GT-WR25, WN7+abs, exhibits the largest X-ray luminosity among Wolf-Rayet stars, suggesting a long-period colliding-wind binary system. XMM-RGS spectra will yield chemical abundances of the WR stellar wind and test evolutionary models. Three pointings of 30 ksec each will provide evidence on the X-ray variability of WR25, and information on the variability of the nearby binary HD93205 of type O3V+O8V with P=6.08 days. XMM-EPIC spectra will be obtained at crucial orbital phases of HD93205, in order study dynamical properties of the component winds. This is a joint program of the XMM-RGS and XMM-OM instrument teams.|
|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, 2003-02-23T00:00:00Z, 011256, 17.56_20190403_1200. https://doi.org/10.5270/esa-fxk4ewl|