|Title||Calibrating the time-evolution of the high-energy emissions of GKM stars|
|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||Serendipitous UV source catalogues for 10 years of XMM and 5 years of Swift . Yershov, V. N., . Ap&SS . 354-97 . 2014 . 2014Ap&SS.354...97Y ,
XMM-Newton publication statistics . Ness, J.-U., Parmar, A. N., et all. . AN . 335-210 . 2014 . 2014AN....335..210N ,
The Million Optical - Radio-X-ray Associations (MORX) Catalogue . Flesch, Eric W., . PASA . 33-52 . 2016 . 2016PASA...33...52F ,
A new sample of X-ray selected narrow emission-line galaxies. II. Looking for True Seyfert 2 . Pons, E., Watson, M. G., . A&A . 594-72 . 2016 . 2016A&A...594A..72P ,
AGN spectral states from simultaneous UV and X-ray observations by XMM-Newton . Svoboda, J., Guainazzi, M., . A&A . 603-127 . 2017 . 2017A&A...603A.127S ,
An improved age-activity relationship for cool stars older than a gigayear . Booth, R. S., Poppenhaeger, K., et all. . MNRAS . 471-1012 . 2017 . 2017MNRAS.471.1012B ,
The 3CR Chandra Snapshot Survey: Extragalactic Radio Sources with Redshifts between 1 and 1.5 . Stuardi, C., Missaglia, V., et all. . ApJS . 235-32 . 2018 . 2018ApJS..235...32S ,
A Comparison of X-Ray Photon Indices among the Narrow- and Broad-line Seyfert 1 Galaxies . Ojha, Vineet, Chand, Hum, et all. . ApJ . 896-95 . 2020 . 2020ApJ...896...95O ,
|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, 2012-12-22T00:00:00Z, 067065, 17.56_20190403_1200. https://doi.org/10.5270/esa-ilduoag|