Name | 050249 |
Title | STRIP-MINING THE CORONAL GRAVEYARD |
URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0502490101 |
DOI | https://doi.org/10.5270/esa-joia0js |
Author | Dr Thomas Ayres |
Description | XMM-Newton pointings on 2 late-type G/K supergiants in the outskirts of the coronal graveyard will explore the midrange of X-ray activity in evolved late-type stars. Our ambition is to gain insight into magnetic field generation in the absence of sensible rotation, and the disposition of hot coronal structures in the extended outer envelopes of these objects, possibly partially smothered beneath a cool absorber. Such buried activity might be the long sought initiator of chromospheric winds in the giant branch. The project will capture two promising candidates from UV and X-ray flux limited samples identified in the ROSAT era. Understanding the broad reaches of coronal activity, and its evolution, are key objectives of cool star astrophysics. |
Publication | No observations found associated with the current proposal |
Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
Temporal Coverage | 2007-09-23T07:18:07Z/2008-03-04T20:09:32Z |
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 | 2009-04-02T00:00:00Z |
Publisher And Registrant | European Space Agency |
Credit Guidelines | European Space Agency, Dr Thomas Ayres, 2009, 050249, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-joia0js |