Astronomy and Astrophysics – Astronomy
Scientific paper
May 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993aas...182.0808e&link_type=abstract
American Astronomical Society, 182nd AAS Meeting, #08.08; Bulletin of the American Astronomical Society, Vol. 25, p.805
Astronomy and Astrophysics
Astronomy
2
Scientific paper
We present an interpretation of the first spectra of the soft X-ray background in the energy range 0.15 < E < 0.284\ keV, or wavelength range 44 < lambda < 83\ Angstroms. These spectra were obtained by the Diffuse X-ray Spectrometer (DXS) during the STS-54 mission of the Space Shuttle Endeavour in January 1993. The spectrum shows emission lines, which is the first direct evidence that the soft X-ray background arises in hot interstellar gas. Tentative identifications of line blends are made, pending completion of the post-flight instrument calibrations. We fit various models to these spectra, and present preliminary results of these fits. Equilibrium Raymond & Smith models with solar abundances do not fit the data. Better fits can be obtained by using depleted abundances and/or young blast wave non-equilibrium models. This work was supported by NASA contract NAS 5--26078.
Edgar Richard J.
Juda Michael
Kraushaar William L.
McCammon Dan
Sanders Wilton T.
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