The Early Interaction of the Planetary Nebula NGC 40 with the Interstellar Medium
Astrophysics
2009-11-07 v1
Abstract
We report the detection of an Halpha emission-line structure in the upstream side of the planetary nebula NGC 40, which is predicted by numerical simulations, and which is attributed to Rayleigh-Taylor instability. Such a Rayleigh-Taylor instability is expected to occur at early stages of the interaction process between the interstellar medium (ISM) and a fast moving planetary nebula, as is the case for NGC 40. We resolved the Rayleigh-Taylor instability `tongues', as well as the flatness of the nebula around the `tongues', which results from the deceleration by the ISM.
Keywords
Cite
@article{arxiv.astro-ph/0201252,
title = {The Early Interaction of the Planetary Nebula NGC 40 with the Interstellar Medium},
author = {Jodie Martin and Kiriaki Xilouris and Noam Soker},
journal= {arXiv preprint arXiv:astro-ph/0201252},
year = {2009}
}
Comments
7 pages, 2 figures - 1 color, 1 mosaic Submitted to ApJLetters