A dataset provided by the European Space Agency

Proposal ID 010024
Title XMM observations of FK Comae-type giants
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DOI https://doi.org/10.5270/esa-dvpe6q2
Principal Investigator, PI Dr Fredericus Jansen
Abstract GT- FK Com stars are single G or K type giants whose distinctive characteristicsinclude strong and variable H \alpha and CaII emissions, strong UVchromospheric emission lines, quasisinusoidal optical light curves and highx-ray luminosity. Furthermore FK Comae giants exhibit large rotationalvelocities (unusual among single giants) which may govern their highchromospheric and coronal activity levels. The objective of this proposal is tomeasure the physical characteristics of the coronae of FK Com type stars (e.gtemperature, electron densities, abundances, variability) and to compare themwith those of other G-K type giants.
Publications
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2000-07-09T17:13:19Z/2002-11-24T01:07:08Z
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 2004-01-25T00:00:00Z
Keywords "xray luminosity", "single giants", "XMM", "coronal activity levels", "$\ alpha", "physical characteristics", "type giants", "electron densities", "caii emissions", "fk com stars", "distinctive characteristics", "rotational velocities"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Dr Fredericus Jansen, 2004, 'XMM observations of FK Comae-type giants', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-dvpe6q2