Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003omeg.conf..246k&link_type=abstract
ORIGIN OF MATTER AND EVOLUTION OF GALAXIES 2000. Proceedings of the International Symposium. Held 19-21 January 2000 in Universi
Astronomy and Astrophysics
Astronomy
Scientific paper
This paper reviews the chemical evolution of massive stars and their remnants using the ASCA results of X-ray spectroscopy. We demonstrate that the ASCA spectrum of Eta-Carinae provides direct evidence for the CNO cycle reaction at the surface layer of the massive star. Then we present distinct difference of line emission features in the X-ray spectra of young supernova remnants (SNR) of two types of supernovae, type Ia and type II. We show that the chemical composition of a galaxy can be estimated by aged SNR samples. Finally we discuss related topics of SNRs, in particular of particle acceleration in the SNRs.
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