| Name | 067065 |
| Title | Calibrating the time-evolution of the high-energy emissions of GKM stars |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0670650101 |
| DOI | https://doi.org/10.5270/esa-ilduoag |
| Author | Dr Ignasi Ribas |
| Description | A key element to understand planetary atmospheres (Solar System and exoplanets) is the time-evolution of the flux at short wavelengths (X-ray to UV) of the host stars, having direct impact on important questions related to photochemistry and evaporation. While the high-energy flux evolution is well understood for solar- type stars, this is not the case of the later K and M stars. The proposed XMM- Newton observations will allow us to build X-ray luminosity versus age calibrations by sampling the critical intermediate-age interval. This is done by measuring KM stars in wide binary pairs with white dwarf companions that we use as chronometers to determine reliable ages. The time-variation of coronal temperature will provide additional diagnostics useful to both exoplanets and dynamo theory. |
| Publication | No observations found associated with the current proposal |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2011-05-10T06:51:44Z/2011-12-10T18:08:41Z |
| 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 | 2012-12-22T00:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Ignasi Ribas, 2012, 067065, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-ilduoag |