A dataset provided by the European Space Agency

Name 082485
Title XUV irradiation of the youngest and nearest transiting super-Earths and Neptunes


DOI https://doi.org/10.5270/esa-6rgt444
Author Prof Peter Wheatley
Description A lack of close-in Neptune-sized planets, and the recently-discovered bimodal distribution of super-Earths and sub-Neptunes from Kepler, have both been interpreted as evidence that exoplanet evolution is profoundly affected by XUV- driven atmospheric evaporation. The key uncertainty in this interpretation is the energetic efficiency of the atmospheric escape, which can be measured by combining HST UV and XMM X-ray observations, but only for nearby and young transiting systems. The Kepler planets are too far away, but fortunately K2 and MEarth are finding small planets that are nearby and-or situated in clusters with known young ages. We propose XMM measurements that will be combined with scheduled HST observations to determine how mass loss efficiency depends on planet size.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2018-09-11T11:14:01Z/2018-09-11T23:10:41Z
Version 17.56_20190403_1200
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.
Creator Contact https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk
Date Published 2019-09-28T22:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2019-09-28T22:00:00Z, 082485, 17.56_20190403_1200. https://doi.org/10.5270/esa-6rgt444