|Title||The X-ray Spectra of Young, Active Stars Hosting Small Planets|
|Author||Mr Michael Zhang|
|Description||Photoevaporative mass loss is key to sculpting the properties of short period transiting exoplanets, yet current models have large uncertainties. One of the biggest sources of uncertainty is the high-energy (X-ray and extreme UV) spectrum of the star. Stellar EUV cannot be measured due to interstellar absorption, and must be inferred from the X-ray luminosity. We propose a survey to measure the X-ray spectra of four young, active stars hosting small (< 3.5 R_Earth) planets. This regime is the most critical for understanding exoplanet demographics, and our targets are the most observationally favorable for detecting exospheric absorption. The spectra measured by XMM-Newton will be crucial in understanding photoevaporation from these exceptional planets.|
|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, 2022-09-21T00:00:00Z, 088287, 19.16_20210326_1200. https://doi.org/10.5270/esa-[xxxxxxx]|