| Proposal ID | 092256 |
| Title | Investigating the evolution of planets straddling the radius valley |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0922560201 |
| DOI | https://doi.org/10.57780/esa-uo8txp5 |
| Principal Investigator, PI | Dr George King |
| Abstract | Over recent years, a dearth of planets with radii between 1.5 and 2 times thatof the Earth has been uncovered in the observed population of short periodplanets. Several nearby multi-planet systems have been discovered hostingplanets on both sides of this gap, dubbed the radius valley. One of theleading mechanisms for forming the gap is the stripping of small H/He envelopesby X-ray and EUV-driven photoevaporation. Systems boasting planets on eitherside of the valley provide a powerful testing ground for this hypothesis, as allplanets in the system have been subject to the same high-energy irradiationhistory. We propose XMM-Newton observations of five such systems, spanning arange of system architectures as well as stellar ages and masses, with the aim of determining which are compatible |
| Publications | No publications found for current proposal! |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2023-08-01T18:07:07Z/2023-08-02T03:15:27Z |
| Version | 21.51_20241115_1113 |
| 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. |
| Creator Contact | https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk |
| Date Published | 2024-08-19T00:00:00Z |
| Last Update | 2026-06-19 |
| Keywords | XMM-Newton, OM, RGS, EPIC, X-ray, Multi-Mirror, SAS |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr George King, 2024, 'Investigating the evolution of planets straddling the radius valley', 21.51_20241115_1113, European Space Agency, https://doi.org/10.57780/esa-uo8txp5 |
| Rights | Data hosted in the ESA Space Science Archives are distributed under the CC BY-NC 3.0 IGO license. |