Direct X-ray measurements of the expansion of planetary nebulae

Details Direct X-ray measurements of the expansion of planetary nebulae Direct X-ray measurements of the expansion of planetary nebulae

Sep 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008cxo..prop.2538y&link_type=abstract

Chandra proposal ID #10200900

Physics

Scientific paper

We propose the first direct measurements of the proper motion of X-ray-emitting regions within planetary nebulae (PNs), via new Chandra observations of the PNs NGC 7027 and BD +303639. In the case of NGC 7027, measurement of the speeds of X-ray-emitting jets will provide a straightforward and unique test of simple jet shock models and unparalleled insight into the evident rapid structural evolution of this seminal young PN. In the case of BD+303639, confirmation of our tentative result that its X-ray ``hot bubble'' is expanding at about 200 km/s would represent a milestone in our understanding of the wind interactions that shape PNs.

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