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The Bright Pre-main Sequence Variable HR5999
Talavera, A.; Mewe, R.; Catala, C. +7 more
A meeting to review the reduced coordinated observations by EXOSAT, IUE and ground-based instruments of the bright and variable Herbig A7e star HR 5999 is summarized. The attempt was to delineate the relationship between the various observable quantities of its atmosphere (colors, emission-line fluxes, wind velocities, etc.) in order to develop a …
EXOSAT Observations of Flare Stars and Coronal Heating
Rodono, M.; Butler, C. J.
A program of observation of dMe stars is described that has been undertaken with EXOSAT as part of a collaboration of groups at Armagh, Catania, and JILA (University of Colorado) for multiband coverage of flare stars. The following conclusions were drawn: (1) The LE X-ray flux varies continuously over time scales of 20 seconds to hours with many s…
EXOSAT- Present Status and Future Prospects
Redfern, R. M.
The design and operation of the ESA Exosat orbiting X-ray observatory (launched in May 1983) are reviewed, and some preliminary results are summarized. The value of X-ray observations for investigating hot sources assumed to be driven by accretion into neutron stars is indicated; the low-energy imaging telescopes, medium -energy experiment, and ga…