A dataset provided by the European Space Agency

Proposal ID 002414
Title Clump Giants in the Hyades
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https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0024140101

DOI https://doi.org/10.5270/esa-1p6rmso
Principal Investigator, PI Dr Nancy Brickhouse
Abstract Cluster giant stars allow a powerful test of our concepts of coronal magneticactivity and its evolution. The puzzling result of large differences in coronalstrength among the 4 Hyades clump giants, when these stars are so similar, merits detailed study. Moreover, the renaissance of magnetic activity inhelium-burning stars challenges our ideas of dynamo evolution and wind-inducedangular momentum loss. We propose XMM observations of 3 Hyades giant stars todocument the differences and similarities in coronal structure and abundances tofinally isolate the dynamo effects in a well-understood stellar population.
Publications
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2001-03-13T18:14:12Z/2001-03-14T11:52:45Z
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 2002-07-23T00:00:00Z
Keywords "magnetic activity", "XMM", "clump giants", "powerful test", "dynamo effects", "cluster giant stars", "stellar population", "coronal magnetic activity", "hyades clump giants", "coronal strength", "dynamo evolution", "hyades giant stars", "coronal structure"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Dr Nancy Brickhouse, 2002, 'Clump Giants in the Hyades', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-1p6rmso