Hostname: page-component-cd9895bd7-fscjk Total loading time: 0 Render date: 2024-12-26T17:21:43.109Z Has data issue: false hasContentIssue false
  • English
  • Français

The Shocking Truth About some “Proto-PN”

Published online by Cambridge University Press:  19 July 2016

R. W. Goodrich  and
Luciana Bianchi
R. W. Goodrich
Affiliation:
Lick Observatory, Santa Cruz, California, U.S.A.
Luciana Bianchi
Affiliation:
Osservatorio Astronomico, Pino Torinese, Italia

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

A small number of bipolar planetaries -including M2-9, M1-91, GL 618, and M2-56- exhibit very strong emission lines of low ionization species such as [O I], [N I], [N II], and [S II]. Most previous authors have attempted to analyze the spectra of these objects assuming that they are photoionized by their central stars. Closer examination, however, suggests that a different excitation mechanism may be at work -that of shock heating.

Type
V. Origin of Planetaries
Information
Symposium - International Astronomical Union , Volume 131: Planetary Nebulae , 1989 , pp. 447
Copyright
Copyright © Kluwer 1989