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Symbiotic Stars and Planetary Nebulae in the λ5007/Hβ vs. λ4363/Hγ Diagnostic Diagram

Published online by Cambridge University Press:  13 April 2010

N. O. Baella
N. O. Baella*
Affiliation:
Observatorio Nacional, MCT, Rua Gen. Jose Cristino 77, Rio de Janeiro, 20921-400, Brazil email: baella@on.br
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Abstract

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In this work the location of a sample of 174 flux measurements (planetary nebulae, S, D, D'-type Symbiotic Star (SS) and six peculiar objects) on the λ5007/Hβ vs. λ4363/Hγ diagnostic diagram are compared, in order to investigate possible differences in electron density and temperature among them. Helium abundances, electron density and temperature were obtained for five D'-type SS and HD149427 (PC 11). In order to calculate them, expressions normally used for objects with low density were modified, in such a way that they can be used in objects with higher densities.

Keywords

binaries: symbioticnovaecataclysmic variablesplanetary nebulae: general
Type
Poster Papers
Information
Proceedings of the International Astronomical Union , Volume 5 , Symposium S262: Stellar Populations – Planning for the Next Decade , August 2009 , pp. 307 - 308
Copyright
Copyright © International Astronomical Union 2010

References

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Gutierrez-Moreno, A., Moreno, H., & Cortes, G. 1995, PASP, 107, 462CrossRefGoogle Scholar