The kinematics of the large western knot in the halo of the young planetary nebula NGC 6543

Details The kinematics of the large western knot in the halo of the young planetary nebula NGC 6543 The kinematics of the large western knot in the halo of the young planetary nebula NGC 6543

2005-07-08

arxiv.org/abs/astro-ph/0507204v1

Mon.Not.Roy.Astron.Soc.362:1286-1294,2005

Astronomy and Astrophysics

Astrophysics

13 pages, 11 figures (all eps format). To be published in MNRAS, accepted on 6/7/05

Scientific paper

10.1111/j.1365-2966.2005.09399.x

A detailed analysis is presented of the dominant ionised knot in the halo of the planetary nebula NGC 6543. Observations were made at high spectral and spatial resolution of the [OIII] 5007 line using the Manchester echelle spectrometer combined with the 2.1-m San Pedro Martir Telescope. A 20-element multislit was stepped across the field to give almost complete spatial coverage of the knot and surrounding halo. The spectra reveal, for the first time, gas flows around the kinematically inert knot. The gas flows are found to have velocities comparable to the sound speed as gas is photo-evaporated off an ionised surface. No evidence is found of fast wind interaction with the knot and we find it likely that the fast wind is still contained in a pressure-driven bubble in the core of the nebula. This rules out the possibility of the knot having its origin in instabilities at the interface of the fast and AGB winds. We suggest that the knot is embedded in the slowly expanding Red Giant wind and that its surfaces are being continually photoionised by the central star.

Affiliated with

Also associated with

No associations

Rating

The kinematics of the large western knot in the halo of the young planetary nebula NGC 6543 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The kinematics of the large western knot in the halo of the young planetary nebula NGC 6543, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The kinematics of the large western knot in the halo of the young planetary nebula NGC 6543 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-374528