|Title||Detection of the atmosphere of the planet around HD209458 with XMM-Newton|
|Author||Dr Bertaux Jean-loup|
|Description||We propose to observe the only star known to have an orbiting planet which makes a transit as seen from the earth: HD209458, with a triple objective: 1. the first detection of an atmosphere around an exo-planet, by comparing the light curve in the UV with the one obtained in the visible by the HST, as the Rayleigh extinction is expected to happen at different levels in the atmosphere as a function of wavelength. 2. characterize the x-ray emission of the star to determine better its age 3. try to detect the possible x-ray emission due to charge exchange of stellar wind ions with the atmosphere of the planet, a phenomenon well observed on comets in our solar system.|
|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, 2004-07-03T00:00:00Z, 014820, 17.56_20190403_1200. https://doi.org/10.5270/esa-85uhk97|