| Proposal ID | 069346 |
| Title | Calibrating the time-evolution of the high-energy emissions of GKM stars |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0693460101 |
| DOI | https://doi.org/10.5270/esa-1l9k9uj |
| Principal Investigator, PI | Dr Ignasi Ribas |
| Abstract | 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 hoststars. While the high-energy flux evolution is well understood for solar-typestars, this is not the case of the later K and M stars. After obtaining someunexpected results on previous AO,10, the proposed XMM-Newton observations willallow us to throw light on the behaviour of X-ray emissions along the criticalintermediate-age interval (1-6 Gyr). This will be done by measuring new GKMstars in wide binary pairs with white dwarf companions that we use aschronometers to determine reliable ages. The time-variation of coronaltemperature will provide additional diagnostics useful to both exoplanets and dynamo theory. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2012-08-14T09:03:18Z/2012-12-22T03:23:27Z |
| 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. |
| Creator Contact | https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk |
| Date Published | 2014-01-15T00:00:00Z |
| Keywords | "time variation", "XMM-Newton", "short wavelengths xray", "xmm newton", "energy flux evolution", "additional diagnostics useful", "solar type stars", "dynamo theory", "wide binary pairs", "gkm stars", "XMM", "energy emissions", "time evolution", "reliable ages", "coronal temperature", "white dwarf companions", "key element", "xray emissions", "throw light", "intermediate age interval" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Ignasi Ribas, 2014, 'Calibrating the time-evolution of the high-energy emissions of GKM stars', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-1l9k9uj |