Revised Diagnostic Diagrams for Planetary Nebulae
Astrophysics
2007-05-23 v1
Abstract
Diagnostic diagrams of electron density - excitation for a sample of 613 planetary nebulae are presented. The present extensive sample allows the definition of new statistical limits for the distribution of planetary nebulae in the log [Ha/[SII]] vs log [Ha/[NII]], log [Ha/[SII]] vs [SII] 6717/6731 and log [Ha/[NII]] vs [SII] 6717/6731 planes. The diagrams provide a good representation of the ranges of physical conditions, indicated by these emission line ratios, present in planetary nebulae during different evolutionary stages.
Cite
@article{arxiv.astro-ph/0602201,
title = {Revised Diagnostic Diagrams for Planetary Nebulae},
author = {H. Riesgo and J. A. López},
journal= {arXiv preprint arXiv:astro-ph/0602201},
year = {2007}
}
Comments
6 pages, 7 figures. Accepted for RMAA