Chandra Observation of Galactic SNR G340.6+0.3

Details Chandra Observation of Galactic SNR G340.6+0.3 Chandra Observation of Galactic SNR G340.6+0.3

Jan 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21545413p&link_type=abstract

American Astronomical Society, AAS Meeting #215, #454.13; Bulletin of the American Astronomical Society, Vol. 42, p.470

Astronomy and Astrophysics

Astronomy

Scientific paper

We present initial results from our Chandra ACIS observation of the shell-type Galactic supernova remnant (SNR) G340.6+0.3. The high resolution Chandra image clearly resolves the bright northern and southern shells. We detect strong line emission from highly ionized Si, S, Ar, and Ca in the northern shell. Abundances of these elements are several times higher than solar, indicating ejecta material enriched in these high-Z metal species. The southern shell can be fitted by a thermal plasma with solar abundances, indicating its origin as the shocked interstellar medium. The small angular size (2.3' radius), the detection of overabundant metals, and the high plasma temperatures (kT 1-1.5 keV) suggest that G340.6+0.3 is a young, ejecta-dominated SNR, which provides a useful opportunity to study the supernova nucleosynthesis of intermediate metal elements.

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