Browsing by Subject "central stars"
Now showing items 1-2 of 2
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The creation of the helix planetary nebula (ngc 7293) by multiple events
(Oxford University Press (OUP), 2005-07-01)A deep continuum-subtracted image of NGC 7293 has been obtained in the light of the H alpha+[N II] emission lines. New images of two filamentary halo structures have been obtained, and a possible detection of a collimated ... -
The kinematics of the large western knot in the halo of the young planetary nebula ngc 6543
(Oxford University Press (OUP), 2005-08-25)A detailed analysis of the dominant ionized knot in the halo of the planetary nebula NGC 6543 is presented. Observations were made at high spectral and spatial resolution of the [OIII]lambda 5007-angstrom line using the ...