We propose to obtain snapshot observations of a sample of ultra-active planethosts. The sample is complete in that it comprises all known transiting systems(not observed/proposed) within 250 pc, orbital periods below 10 days and strongactivity as photometric variations in excess of 1% and/or Ca II emission; thesample does include all suitable objects detected by Kepler. The sensitivity ofthe proposed XMM-Newton observations allows the detection of stars with X-rayluminosities in excess of 10^29 erg/sec. Because of the proximity to their hoststhese planets are the prime candidates for the process of planetary atmosphericevaporation through hydrodynamic blow-off. With our study we establish thehosts. high-energy properties and pave the way for meaningful follow-up studies.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2014-07-10T12:21:46Z/2014-10-22T00:54:23Z
Version
17.56_20190403_1200
Mission Description
The European Space Agencys (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESAs 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 Earths 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.
European Space Agency, Prof Jurgen Schmitt, 2015, 'An X-ray survey of ultra-active planet hosts', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-wd35q25
