Multiple Point-Symmetric Ejections in IC 4634

Details Multiple Point-Symmetric Ejections in IC 4634 Multiple Point-Symmetric Ejections in IC 4634

2003-10-14

arxiv.org/abs/astro-ph/0310370v1

Astronomy and Astrophysics

Astrophysics

2 pages, 1 figure; to appear in "Asymmetrical Planetary Nebulae III" editors M. Meixner, J. Kastner, N. Soker, & B. Balick (AS

Scientific paper

We present a spatio-kinematical study of the planetary nebula (PN) IC 4634 which has experienced several episodes of point-symmetric ejections oriented at different directions. The nebula displays two S-shaped low-ionization arcs that are probably related to two relatively recent point-symmetric ejections, the outer S-shaped arc representing a beautiful example of a bow-shock resolved in a PN. We report here the discovery of an arc-like string of knots at larger distances from IC 4634 central star that represents a much earlier point-symmetric ejection.

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