The Morphological and Structural Classification of Planetary Nebulae
Abstract
We present a statistical analysis of a complete sample (255) of northern planetary nebulae (PNe). Our analysis is based on morphology as a main parameter. The major morphological classes are: round (26 % of the sample), elliptical (61 %), and bipolar (13 %) PNe. About a half of the round and 30 % of the elliptical PNe present multiple shells. Round PNe have higher galactic latitude (| b| = 12) and galactic height (<z> = 753 pc), than the elliptical (|b| = 7,<z> = 308 pc) and bipolar (|b| = 3, <z>=179 pc). This possibly implies a different progenitor mass range across morphology, as a different stellar population would suggest.
Keywords
Cite
@article{arxiv.astro-ph/0002073,
title = {The Morphological and Structural Classification of Planetary Nebulae},
author = {A. Manchado and E. Villaver and L. Stanghellini and M. A. Guerrero},
journal= {arXiv preprint arXiv:astro-ph/0002073},
year = {2016}
}
Comments
7 pages, to appear in "Asymmetrical Planetary Nebulae II: from Origins to Microstructures", ASP Conference Series, J.H. Kastner, N. Soker, & S.A. Rappaport, eds