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Title:
Observation of the Supernova Remnant Kes 79
Authors:
Tsunemi, Hiroshi; Enoguchi, Hideyuki
Affiliation:
AA(A(Dept. of Earth and Space Science, Graduate School of Science, Osaka University) A(Dept. of Earth and Space Science, Graduate School of Science, Osaka University)), AB(A(Dept. of Earth and Space Science, Graduate School of Science, Osaka University) A(Dept. of Earth and Space Science, Graduate School of Science, Osaka University))
Publication:
Publications of the Astronomical Society of Japan, Vol.54, No.5, pp.735-740 (PASJ Homepage)
Publication Date:
10/2002
Origin:
PASJ
Keywords:
abundances, ISM: individual (Kes79), supernova remnants, X-rays: ISM
Bibliographic Code:
2002PASJ...54..735T

Abstract

We report here on an ASCA observation of Kes79, a possible mixed-morphology (MM) SNR. There are two radio shells: an inner shell and an outer shell. A ROSAT observation revealed an inner ring in X-ray that has been confirmed by the ASCA observation. The X-ray intensity peak is near the inner radio shell. The X-ray spectrum is well-fitted by a single component of the non-equilibrium ionization condition model with about 0.7-times the solar abundance. The plasma age estimated from the ionization parameter is only 3.3 × 103yr. The temperature is uniform ( ~ 0.7 keV ) while the density profile is approximated by a point symmetric Gaussian function. Comparing the Kes79 results with those of Kes27, a prototypical MMSNR, Kes79 may not belong to the MM type SNRs.
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