Astronomy and Astrophysics – Astrophysics
Scientific paper
2008-09-18
Astronomy and Astrophysics
Astrophysics
5 pages, 2 figures, proceedings of the 10th Symposium on Nuclei in the Cosmos
Scientific paper
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.
Badenes Carles
Bravo Eduardo
Hughes John Patrick
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