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Ultraviolet Emission from Strong X-Ray Sources as Observed with Iue

Published online by Cambridge University Press:  30 March 2016

Herbert Gursky  and
Robert Davis
Herbert Gursky
Affiliation:
Harvard/Smithsonian Center for Astrophysics, Cambridge, Massachusetts, U.S.A.
Robert Davis
Affiliation:
Harvard/Smithsonian Center for Astrophysics, Cambridge, Massachusetts, U.S.A.

Extract

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In 1972, when the request for observing programs for the International Ultraviolet Explorer (IUE) was first made by NASA, ESA and the United Kingdom, a number of scientists recognized that observations in the ultraviolet of the strong galactic X-ray sources could be a fruitful activity. The underlying nature of those objects was understood. Their binary nature had been discovered through the X-ray observations which, combined with extensive optical observations and the insight gained through the tie to traditional ideas of stellar evolution, led to a picture whose general features are still accepted. The strong X-ray sources were taken to be close binary systems in which one object was a compact star, either a neutron star or a black hole, and the other object a common star in a stage of its life when it was undergoing great mass loss, either as a stellar wind or through Roche-lobe overflow.

Type
Ultraviolet Astronomy-New Results from Recent Space Experiments
Information
Highlights of Astronomy , Volume 5: Highlights of Astronomy. As presented at the XVIIth General Assembly of the IAU, 1979 , 1980 , pp. 231 - 245
Copyright
Copyright © Cambridge University Press 1980

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