Multiple Point-Symmetric Ejections in IC 4634
Astrophysics
2007-05-23 v1
Abstract
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.
Cite
@article{arxiv.astro-ph/0310370,
title = {Multiple Point-Symmetric Ejections in IC 4634},
author = {Martin A. Guerrero and Luis F. Miranda and You-Hua Chu},
journal= {arXiv preprint arXiv:astro-ph/0310370},
year = {2007}
}
Comments
2 pages, 1 figure; to appear in "Asymmetrical Planetary Nebulae III" editors M. Meixner, J. Kastner, N. Soker, & B. Balick (ASP Conf. Series)