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Secondary fe-peak nuclei in the tycho supernova remnant
Badenes Montoliu, Carles; Bravo Guil, Eduardo; Hughes, J.P.
Universitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear; Universitat Politècnica de Catalunya. GAA - Grup d'Astronomia i Astrofísica
The Mn to Cr mass ratio in supernova ejecta has recently been proposed as a tracer of Type Ia SN progenitor metallicity. We review the advantages and problems of this observable quantity, and discuss them in the framework of two Galactic supernova remnants: the well known Tycho SNR and W49B, an older object that has been tentatively classified as Type Ia. The fluxes of the Mn and Cr Ka lines in the X-ray spectra of these SNRs observed by the Suzaku and ASCA satellites suggest progenitors of supersolar metallicity for both objects.
Àrees temàtiques de la UPC::Física::Astronomia i astrofísica
Attribution-NonCommercial-NoDerivs 3.0 Spain

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