A dataset provided by the European Space Agency

Name 050249
Title STRIP-MINING THE CORONAL GRAVEYARD
URL

https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0502490101
https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0502490301
https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0502490401

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