|Title||Measuring the evaporation of close-in extra-solar planets|
|Author||Dr Peter Wheatley|
|Description||The discovery with HST of evaporation of the transiting exoplanet HD209458b has raised the possibility that the evolution of close-in planets is dominated by mass loss. To date, however, this remains the only detection of evaporation because STIS was lost shortly after making this discovery. Here we show that XMM-Newton transit spectroscopy is also sensitive to absorption by material evaporating from close-in extra-solar planets. Indeed, X-ray continuum absorption has the potential to measure mass loss rates, whereas HST could only place a lower limit. We propose an XMM-Newton transit observation of the nearest and brightest transiting planet, HD189733b. Simultaneous measurement of X-ray irradiation and evaporation rates will provide the first direct test of planetary evaporation models.|
|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, 2008-05-01T00:00:00Z, 050607, 17.56_20190403_1200. https://doi.org/10.5270/esa-2su90p5|