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Hα Morphological Classification of Planetary Nebulae

Published online by Cambridge University Press:  07 August 2017

Hugo E. Schwarz ,
Romano L.M. Corradi  and
Letizia Stanghellini
Hugo E. Schwarz
Affiliation:
ESO, Casilla 19001, Santiago 19, Chile
Romano L.M. Corradi
Affiliation:
ESO, Casilla 19001, Santiago 19, Chile
Letizia Stanghellini
Affiliation:
Osservatorio Astronomico di Bologna, via Zamboni 15, Bologna, Italia

Extract

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Using the data from the catalogue of PNe images of Schwarz et al. (1992), we have classified 255 nebulae into 5 morphological groups. The images were taken through a filter centred on the Hα line and included the [NII]6583 line. Most of the observations were made with the 3.5m ESO NTT during commissioning time. The main groups are called: stellar (st), irregular (i), elliptical (e), bipolar (b), and point-symmetric (p). The ellipticals are subdivided into: simple (e), multiple event (em), and inner structure (es) types. The bipolars into: simple (b), and multiple event (bm). The point-symmetric objects into: simple (p), and multiple events (pm).

Type
III. Highlights on the Nebulae
Information
Symposium - International Astronomical Union , Volume 155: Planetary Nebulae , 1993 , pp. 214
Copyright
Copyright © Kluwer 1993 

References

Schwarz, H.E., Corradi, R.L.M., and Melnick, J. 1992 AASS, in the press Google Scholar