We propose to perform X-ray observations of two young Sun-like stars which showevidence of circumstellar debris disks, likely associated to planetaryformation. In particular, we aim to observe DK Dra, a 30 Myr old G-type dwarf,characterized by a warm (T virgul110 K) dusty disk at 4-6 AU from the star, and HD107146, a young (100 Myr) solar twin, with a cold extended (virgul200 AU) debris diskwhich was recently resolved in scattered light, and at submillimetric andmillimetric wavelengths. The proposed observations will allow us to addressseveral issues concerning the formation and evolution of planetary systemsaround Sun-like stars, the influence of high-energy radiation on thecircumstellar medium, and to complement previous studies on the evolution of the coronal emission of solar-type stars.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2009-06-17T14:39:11Z/2009-06-18T04:46:07Z
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, Dr Antonio Maggio, 2010, 'X-ray views of young Sun-like stars with debris disks', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-qzgkb2p
