Elemental abundances in a type I SNR

Details Elemental abundances in a type I SNR Elemental abundances in a type I SNR

Sep 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979stin...7934132b&link_type=abstract

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Astronomy and Astrophysics

Astronomy

Abundance, Emission Spectra, Line Spectra, Nebulae, Supernova Remnants, X Ray Astronomy, Argon, Astronomical Spectroscopy, Heao 2, Silicon, Sulfur, X Ray Spectroscopy

Scientific paper

The solid state spectrometer on the HEAO-2 X-ray observatory observed the X-ray spectrum of Tycho's SNR. The observations show a relative excess of line emission from Si, S, and Ar by or = 6 compared to that expected from a plasma of solar composition in collisional equilibrium and by a factor of or = 3 compared to Cas A. Similar excesses are not found for line emission from Mg and Fe. The data suggest that the SN observed by Tycho in 1572 produced significant amounts of Si group elements but did not eject large amounts of Fe as predicted by some models of Type I SN events.

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