Observations of X-rays and Thermal Dust Emission from the Supernova Remnant Kes 75

Details Observations of X-rays and Thermal Dust Emission from the Supernova Remnant Kes 75 Observations of X-rays and Thermal Dust Emission from the Supernova Remnant Kes 75

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...210.1515s&link_type=abstract

American Astronomical Society Meeting 210, #15.15; Bulletin of the American Astronomical Society, Vol. 39, p.115

Astronomy and Astrophysics

Astronomy

Scientific paper

We present Spitzer Space Telescope and Chandra X-ray Observatory observations of the composite Galactic supernova remnant Kes 75 (G29.7-0.3). We use the detected flux at 24 micron and hot gas parameters from fitting spectra from new, deep X-ray observations to constrain models of dust emission, obtaining a dust-to-gas mass ratio M_dust/M_gas 10^-4. We find that a two-component thermal model, nominally representing shocked swept-up interstellar or circumstellar material and reverse-shocked ejecta, adequately fits the X-ray spectrum, albeit with somewhat high implied densities for both components. We surmise that this model implies a Wolf-Rayet progenitor for the remnant.

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