Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984esasp.218..483w&link_type=abstract
In ESA 4th European IUE Conf. p 483-487 (SEE N84-35135 24-88)
Astronomy and Astrophysics
Astronomy
European Space Programs, Nasa Programs, Spaceborne Astronomy, Ultraviolet Astronomy, Absorption Spectra, Cosmology, Far Ultraviolet Radiation, Focal Plane Devices, Galaxies, Interstellar Space, Lyman Spectra, Mission Planning, Satellite Design, Spectral Resolution
Scientific paper
An ultraviolet astronomy mission (Columbus) is described. It exploits the spectral region between 900 and 1200A, which is extremely rich in containing the Lyman lines of hydrogen and deuterium and the Lyman band of their molecules, together with the resonance lines of many important ions. High resolving power and high sensitivity provide a unique capability for studying the brightest members of neighboring galaxies, the HeI and HeII absorption systems in quasars out to a red shift of 2, and the halos of intervening galaxies. Complementary focal plane instruments are planned in order to allow observations to longer (2000A) and shorter (100A) wavelengths. This wide coverage embraces the resonance lines of all the cosmically abundant elements and a wide range of temperature zones up to 100 million K.
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