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Abundances variations in PNe: Real or Illusory?

Published online by Cambridge University Press:  25 May 2016

A. Riera ,
B. Balick ,
G. Mellema ,
K. Xilouris  and
Y. Terzian
A. Riera
Affiliation:
1Departament de Física i Enginyeria Nuclear, Universitat Politècnica de Catalunya 2Departament d'Astronomia i Meteorologia, Barcelona
B. Balick
Affiliation:
3Department of Astronomy, University of Washington, Seattle
G. Mellema
Affiliation:
4Stockolm Observatory, Saltsjobaden
K. Xilouris
Affiliation:
5National Astronomy and Ionosphere Observatory, Arecibo
Y. Terzian
Affiliation:
6Space Sciences, Cornell University, Ithaca

Extract

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In order to study the putative enrichment within a PN, we have undertaken deep long-slit spectroscopic observations of selected targets in which we expected to find clear evidence of abundance gradients. The targets include NGC 3242: one of the PNs studied by Balick et al. (1994) in which they report N/H enhancements of ∼ 5 in each FLIER; M1-18, M1-8, M3-3, NGC 6537 and Hubble 5. The observations were obtained at the 5-m Hale Telescope of the Palomar Observatory.

Type
IV. Envelopes
Information
Symposium - International Astronomical Union , Volume 180: Planetary Nebulae , 1997 , pp. 274
Copyright
Copyright © Kluwer 1997 

References

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