We propose X-ray observations of nearby F-G-K young (20-40 Myr) stars hostingtransiting exoplanets, recently discovered by TESS and Kepler (K2), and includedin follow-up campaigns with HARPS@ESO 3.6m and HARPS-N@TNG. DS Tuc and HD 33512host super-Earth/Neptune mass planets with inflated atmospheres, due to strongirradiation from their host stars. V1298 Tau harbors a warm Jupiter still incontraction toward its final size. Our immediate objective is to assess X-rayspectral and time variability of the host stars, so to characterize theiractivity level and the dose of high-energy radiation received by very youngplanets. Final goals are the determination of evolutionary paths of exoplanetsin the mass-radius diagram, and constraints for modeling planetary atmospheres.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2021-01-23T18:05:29Z/2021-04-12T01:05:31Z
Version
19.16_20210326_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, Dr Antonio Maggio, 2022, 'The influence of young stellar coronae on young exoplanets', 19.16_20210326_1200, European Space Agency, https://doi.org/10.57780/esa-c8vbjqo
