|Title||GT Observations of Hot Stars: Gamma2 Vel|
|Author||Dr Albert Brinkman|
|Description||GT-Gamma Vel is an early-type binary consisting of an O9 supergiant and a Wolf-Rayet star. Both stars have a powerful wind and the resulting collision zone is a strong X-ray source. We plan to explore the physical conditions and elemental abundances as well as the dynamics in this interaction region. Comparison with state-of-the art hydrodynamical models will provide a stringent check on the model input physics. Observations at maximum and minimum phase will reveal varying absorption columns and hence constraints on the mass loss rate and abundance patterns in the WR wind. Two phase-critical observations will be performed: i) 30 ks during the X-ray maximum, ii) 65 ks during the low state. The pn will be used in full window-thick filter mode, and both MOS in window2-thick filter mode.|
|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, 2003-02-16T00:00:00Z, 011267, 17.56_20190403_1200. https://doi.org/10.5270/esa-sl50iv9|