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A Detailed Study of the Galactic Planetary Nebula G 258-15.7

Published online by Cambridge University Press:  07 August 2017

P. Leisy  and
M. Dennefeld
P. Leisy
Affiliation:
Institut d'Astrophysique de Paris, IAP/CNRS
M. Dennefeld
Affiliation:
Institut d'Astrophysique de Paris, IAP/CNRS

Extract

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The galactic Planetary Nebula G 258-15.7 is a large, bright nebula well suited for a detailed study. Known since Wray (1966), its morphology presents several blobs and ansae, generally associated with type I nebulae, and could be described as “late-butterfly” type according to the classification by Balick (1989). The central star has been classified as hydrogen-deficient by Mendez et al. (1985). Spectroscopy of the two main blobs shows a clear overabundance in He and N, with a marginally significant difference between the two sides. The most striking feature is the jet-like structure appearing on the [OIII]/Halpha picture (Fig. 1), the “jets” being located within the main blobs seen on the monochromatic images. A detailed appraisal of all the data will be presented in a subsequent paper.

Type
IV. Planetary Nebulae Connection: Evolution from the AGB
Information
Symposium - International Astronomical Union , Volume 155: Planetary Nebulae , 1993 , pp. 384
Copyright
Copyright © Kluwer 1993 

References

Balick, B., 1989, in IAU Symp. 131, p. 83, S. Torres–Peimbert, EdtGoogle Scholar
Mendez, R.H., Kudritzki, R.P. and Simon, K.P., 1985, Astron. Astrophys. 142, 289 Google Scholar
Wray, J.D., 1966, Ph.D Thesis, Northwestern University Google Scholar