EXOSAT observations of the Tycho supernova remnant

The Tycho SNR spectrum in the energy range 1.5-10 keV as observed with the Exosat Gas Scintillation Proportional Counter and Medium Energy experiment is presented. The Fe K emission line is resolved and permits an investigation of the Fe abundance. The results are compared to X-ray emissivity calcul...

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Veröffentlicht in:	Astrophys. J.; (United States) 1988-02, Vol.325 (1), p.288-295
Hauptverfasser:	SMITH, A, DAVELAAR, J, PEACOCK, A, TAYLOR, B. G, MORINI, M, ROBBA, N. R
Format:	Artikel
Sprache:	eng
Schlagworte:	640102 - Astrophysics & Cosmology- Stars & Quasi-Stellar, Radio & X-Ray Sources ABUNDANCE Astronomy CHEMICAL COMPOSITION CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS COMPARATIVE EVALUATIONS COSMIC RADIO SOURCES Earth, ocean, space ELEMENTS EMISSION SPECTRA Exact sciences and technology FLUID MECHANICS HYDRODYNAMICS Interstellar medium (ism) and nebulae in external galaxies IRON MEASURING INSTRUMENTS MECHANICS METALS PROPORTIONAL COUNTERS RADIATION DETECTORS SPECTRA Stellar systems. Galactic and extragalactic objects and systems. The universe SUPERNOVA REMNANTS TRANSITION ELEMENTS
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Zusammenfassung:	The Tycho SNR spectrum in the energy range 1.5-10 keV as observed with the Exosat Gas Scintillation Proportional Counter and Medium Energy experiment is presented. The Fe K emission line is resolved and permits an investigation of the Fe abundance. The results are compared to X-ray emissivity calculations for SNRs in nonequilibrium ionization conditions. The 0.5-2.0 keV imaging data from the Exosat telescopes obtained with two different broadband filters are also presented. 30 references.
ISSN:	0004-637X 1538-4357
DOI:	10.1086/166003