| Proposal ID | 011153 |
| Title | GT Observations of Active Cool Stars: EK Dra |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0111530101 |
| DOI | https://doi.org/10.5270/esa-7244fx7 |
| Principal Investigator, PI | Dr Albert Brinkman |
| Abstract | GT-EK Dra is the youngest, easily accessible solar analog, with an age of about100 Myr and a rotation velocity ten times the Suns. Its X-ray luminosity isabout 500 times the Suns, with frequent flares in the light curve. This targetis part of a study on the Sun in Time in which we investigate the decline ofcoronal activity of a solar analog with time. Important aspects concern theemission measure distribution, the abundance pattern that might be activitydependent, and flare variability studies with respect to temperatures,abundances, densities, and mass motions. The pn camera will be used in SMLwindow mode with thick filter, while one MOS will use TIMING mode/medium filter to optimize detection of soft photons. The OM will be operated with the UVW2 filter. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2000-12-30T14:01:58Z/2000-12-31T05:17:04Z |
| 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 | 2002-08-09T00:00:00Z |
| Last Update | 2025-01-27 |
| Keywords | "thick filter", "mass motions", "light curve", "ek dra", "frequent flare", "uvw2 filter", "activity dependent", "xray luminosity", "coronal activity", "abundance pattern", "aspects concern", "active cool stars", "pn camera", "optimize detection", "medium filter", "rotation velocity", "soft photons", "flare variability", "sml window mode", "solar analog" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Albert Brinkman, 2002, 'GT Observations of Active Cool Stars: EK Dra', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-7244fx7 |