Shocked Stellar Winds in Planetary Nebulae

Details Shocked Stellar Winds in Planetary Nebulae Shocked Stellar Winds in Planetary Nebulae

Sep 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999cxo..prop..109c&link_type=abstract

Chandra Proposal ID #01200619

Physics

Chandra Proposal Id #01200619

Scientific paper

Planetary nebulae (PNe) are expected to contain two types of X-ray sources: a hot central star with temperature between 100,000 and 200,000 K, and a shocked fast stellar wind at temperatures between 10(6) and 10(8) K. The shocked fast wind, if detected, allows us to peer into the PN interior and determine its physical conditions directly. We request ACIS-S observations of NGC 6543 (Cat's Eye Nebula) and NGC 7293 (Helix Nebula) in order to search for and analyze their shocked fast winds. NGC 6543 is the only PN for which diffuse X-ray emission has been previously reported and can be detected by the AXAF. NGC 7293 is the nearest PN, and hence provides the most promising case for which the hard and soft X-ray components may be spatially resolved and distinguished.

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