A dataset provided by the European Space Agency

Proposal ID 002175
Title Hybrid Stars and Coronal Evolution
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DOI https://doi.org/10.5270/esa-apviqq1
Principal Investigator, PI Dr Andrea Dupree
Abstract To construct a comprehensive picture of coronal evolution we propose to obtainXMM spectra of a hybrid star (HD 150798) and a pre-hybrid star (HD 159181). These objects are in the warm.. corona/warm.. wind state of evolution andform the critical connecting link between coronal stars (with hot coronae andlow mass loss rates) and the Alpha-Ori type objects (with cool coronae andmassive winds). XMM spectra will yield emission measures from line-basedanalyses, electron densities, the size of the corona, and evidence (or not) fora coronal enhancement of abundances (FIP effect).
Publications
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2001-03-03T10:10:33Z/2002-10-06T15:40:18Z
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 2003-12-04T00:00:00Z
Keywords "HD 150798", "connecting link", "coronal enhancement", "coronal evolution", "XMM", "emission measures", "coronal stars", "cool coronae", "massive winds", "electron densities", "xmm spectra", "comprehensive picture", "hot coronae", "abundance fip effect", "hybrid stars"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Dr Andrea Dupree, 2003, 'Hybrid Stars and Coronal Evolution', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-apviqq1