|Title||Simultaneous X-ray and ultraviolet observations of exoplanetary evaporation|
|Author||Dr Peter Wheatley|
|Description||HST observations show that three of the brightest transiting exoplanets are evaporating (HD209458b, HD189733b and GJ436b) and models suggest that the evolution of close-in low-mass planets may be dominated by this mass loss. Simultaneous X-ray and ultraviolet observations of planetary transits are needed to constrain self-consistent models of the exoplanetary winds. Here we propose transit observations of four bright exoplanets with XMM in order to determine mass loss rates.|
|Publication||No hydrogen exosphere detected around the super-Earth HD 97658 b . Bourrier, V., Ehrenreich, D., et all. . A&A . 597-26 . 2016 . 2016A&A...597A..26B ,
No hydrogen exosphere detected around the super-Earth HD 97658 b . Bourrier, V., Ehrenreich, D., et all. . A&A . 597-26 . 2017 . 2017A&A...597A..26B ,
Atmospheric mass-loss of extrasolar planets orbiting magnetically active host stars . Lalitha, Sairam, Schmitt, J. H. M. M., . MNRAS . 477-808 . 2018 . 2018MNRAS.477..808L ,
The XUV environments of exoplanets from Jupiter-size to super-Earth . King, George W., Wheatley, Peter J., et all. . MNRAS . 478-1193 . 2018 . 2018MNRAS.478.1193K ,
Ground-based detection of an extended helium atmosphere in the Saturn-mass exoplanet WASP-69b . Nortmann, Lisa, Palle, Enric, et all. . Sci . 362-1388 . 2018 . 2018Sci...362.1388N ,
The Relative Emission from Chromospheres and Coronae: Dependence on Spectral Type and Age . Linsky, Jeffrey L., Wood, Brian E., et all. . ApJ . 902-3 . 2020 . 2020ApJ...902....3L ,
|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, 2016-12-10T23:00:00Z, 076410, 17.56_20190403_1200. https://doi.org/10.5270/esa-kfkpfl9|